Between ALS patients with spinal onset and those with bulbar onset, no appreciable changes in blood AP and glucose levels were found. However, in patients with spinal onset ALS, a statistically significant positive connection was seen between the mean values of both chemicals.
What is bulbar onset ALS?
Lou Gehrig's disease, also known as amyotrophic lateral sclerosis (ALS), is a complex illness that can present itself in a variety of ways; each case is different. The area of the body where ALS first manifests itself can differ from person to person. Bulbar-onset ALS is characterized by the onset of symptoms in the neck or face. This name derives from the "bulbar" area of the brain, which regulates facial and neck muscles as well as functions like swallowing and speech.
Hence the answer is, the muscle function differences depend on peripheral glucose.
To learn more about ALS follow the link:
https://brainly.com/question/29651787
#SPJ4
what is the role of helper t cells in the adaptive immune response? what is the role of helper t cells in the adaptive immune response? helper t cells produc
Given that nearly all adaptive immune responses depend on helper T cells, they are arguably the most significant cells in adaptive immunity.
They support the activation of cytotoxic T cells, which kill infected target cells, as well as macrophages and B cells that release antibodies and kill ingested microorganisms. Without helper T cells, we cannot protect ourselves even against numerous ordinarily harmless bacteria, as was vividly shown in AIDS patients. However, helper T cells cannot function by themselves; they must be stimulated to become effector cells. They develop during the innate immunity responses brought on by an infection and become activated on the surface of antigen-presenting cells.
Learn more about helper T cells here
https://brainly.com/question/29518832
#SPJ4
Lichens look like moss. But they’re actually two organisms—usually fungi and algae—that live together in a mutualistic relationship. The fungi provide a sheltered place for the algae to grow and reproduce. What do you think the algae offer that the fungi can’t do?
Typically, fungi and algae coexist in a mutualistic relationship called lichen. The fungi provide a sheltered place for the algae, and the algae provide food for the fungi through the photosynthesis process.
What is a mutualistic relationship?There are many different types of relationships in nature, one of which is mutualism, in which two individuals help each other and are helped. Both fungi and algae coexist in lichen; the alga is photosynthetic and can prepare food for the fungi, while the fungi provide shelter for the alga. In this way, they both coexist and get benefits from one another.
Hence, fungi and algae coexist in a mutualistic relationship called lichen. The fungi provides a sheltered place for the algae, and the algae provide food for the fungi through the photosynthesis process.
Learn more about the mutualistic relationship here.
https://brainly.com/question/20721691
#SPJ1
imagine all the histone h3 molecules in the cell have a mutation that changes their lysine-9 residue to an alanine. assuming this cell could still live, what would be the result?
En Drosophila, el complejo dSAGA que contiene dADA2b está involucrado en la acetilación de la histona H3 lisina 9 y 14. Curiosamente, aunque los niveles de histona H3 acetilada en lisina 9 y 14 se reducen considerablemente en los mutantes dAda2b,
estos animales sobreviven hasta una etapa tardía de desarrollo. Para estudiar las consecuencias moleculares de la pérdida de la acetilación de la histona H3 lisina 9 y 14, comparamos los perfiles de ácido ribonucleico mensajero (ARNm) total de animales de tipo salvaje y mutantes dAda2b en dos etapas de desarrollo. El perfil de expresión génica global indica que la pérdida de la acetilación de lisina 9 y 14 H3 específica de dSAGA da como resultado el cambio de expresión (regulación hacia arriba o hacia abajo) de un subconjunto bastante pequeño de genes y no causa una desregulación general de la transcripción. Entre los genes regulados al alza en los mutantes dAda2b, un número particularmente elevado son aquellos que desempeñan funciones en los mecanismos de defensa antimicrobianos. Los resultados de los experimentos de inmunoprecipitación de cromatina indican que en los mutantes dAda2b, los niveles de histona H3 acetilada con lisina 9 disminuyen tanto en los genes regulados por aumento como por disminución de dSAGA. En contraste con eso, en los promotores de genes de proteína ribosómica independientes de dSAGA se mantiene un alto nivel de histona H3K9ac en mutantes dAda2b. Nuestros datos sugieren que al acetilar H3 en la lisina 9, dSAGA modifica la accesibilidad de Pol II a promotores específicos de manera diferente.
To learn more about antimicrobianos please click on below link
https://brainly.com/question/28032571
#SPJ4
How could we collect evidence to support this one way or the other?
Giving a citation to a source that supports your claim—either a source that concurs with you or supporting data—is the most common method of argumentation.
What is evidence?This method could need to be expanded as your studies go on, perhaps by citing more sources or offering critical commentary on them.
A good reference may be extremely selective and ignore superior or contradicting sources.
Even better is a carefully picked reference from a reputable study or scholar, and best of all are multiple sources that show the weight of the evidence mounting over time. The point has been made, but after three or four references, it starts to feel a little redundant.
Therefore, Giving a citation to a source that supports your claim—either a source that concurs with you or supporting data—is the most common method of argumentation.
To learn more about evidence, refer to the link:
https://brainly.com/question/15880833
#SPJ1
What is the biological significance of the fact that this equilibrium is a saddle point?.
The biological significance of equilibrium is a saddle point i.e. Bifurcation theory's biological applications give us a foundation for understanding the dynamics of biological networks that thought of dynamical systems.
The trapeziometacarpal joint at the base of your thumb is the best illustration of a saddle joint. It joins your thumb's trapezium and metacarpal bone. Your thumb may stretch significantly to help you grasp huge objects because of the joint's flexion-extension and abduction-adduction properties. Additionally, it has the ability to slid inward, touching each of your other fingers closely. Osteoarthritis in this region may also impact your thumb and inner wrist, resulting in discomfort, stiffness, and weakness. A form of synovial joint called a saddle joint has opposing surfaces that are reciprocally concave and convex (sellar joint, articulation by reciprocal reception). It can be discovered in the thumb, thorax, heel, and middle ear. Saddle joints are able to move in all of these directions, just as the condyloid joint: flexion, extension, adduction, abduction, and circumduction. Axial rotation is not permitted, though. When saddle joints can move in both the sagittal and frontal planes, they are said to be biaxial.
To know more about saddle please refer: https://brainly.com/question/6430451
#SPJ4
what type of interspecific interaction exists between coyotes and turkeys? what are the other types of interspecific interactions that exist in nature?
The type of interspecific interaction that exists between coyotes and turkeys is predation. the other types of interspecific interactions that exist in nature are parasitism, commensalism, competition, and mutualism.
Interspecific interactions, from the Latin inter- meaning "between," refer to interactions within a community of species. Competition, predation, mutualism, commensalism, and parasitism are the main interspecific interaction types. Predation occurs when a member of one species, the predator (coyotes here), consumes all or a portion of the body of a member of a different species, the prey (turkeys). Thus, the type of interspecific interaction that exists between coyotes and turkeys is predation.
Two kinds of organisms compete with one another and harm one another when they consume the same scarce resource. a close relationship that lasts a long time and between two species, with mutual benefit. Commensalism is a long-term, close relationship between two species in which one benefits while the other is unaffected. Pariatism is a close, long-term relationship where one species gains while the other suffers.
To know more about interspecific interactions, refer to the following link:
https://brainly.com/question/14137840
#SPJ4
What is the ultimate product of the electron transport chain?
O NADH
O pyruvate
O ATP
O FADH₂
Xavier and Jill are practicing the 100-meter sprint. Which statement BEST describes the metabolic pathways their muscles will utilize to produce the quick energy needed for the intense exercise?
glycolysis begins glucose metabolism, and in the absence of oxygen, lactic acid fermentation takes over.
D. Glycolysis begins glucose metabolism, and in the absence of oxygen, lactic acid fermentation takes over. best describes the metabolic pathways their muscles will utilize to produce the quick energy needed for intense exercise.
The process by which glucose is broken down into energy is called glycolysis. NADH, water, two pyruvate molecules, and ATP are all produced. Oxygen is not required for this process, which takes place in the cytoplasm of a cell. Both aerobic and anaerobic organisms can perform glycolysis.
In all organisms, glycolysis is the first step in cellular respiration. Glycolysis is followed by the Krebs cycle during aerobic respiration. In the absence of oxygen, Cellular respiration shifts to lactic acid fermentation after glycolysis, producing small amounts of ATP.
Lactic acid accumulates in your muscle cells as fermentation continues during seasons of arduous exercises like a 100m sprint. Your cardiovascular and respiratory systems are unable to transport oxygen to your muscle cells, particularly those in your legs, quickly enough to maintain aerobic respiration during these times.
Know more about glycolysis here: https://brainly.com/question/14076989
#SPJ4
(Complete question)
Xavier and Jill are practicing the 100-meter sprint. Which statement BEST describes the metabolic pathways their muscles will utilize to produce the quick energy needed for this intense exercise?
A. Glucose is converted to pyruvic acid, followed by the aerobic pathways of the Krebs cycle and the electron transport chain.
B. Glycolysis produces pyruvic acid and 2 molecules of ATP, then in the absence of oxygen, alcoholic fermentation regenerates NAD to keep
glycolysis running
C. The pyruvic acid from glycolysis enters the mitochondria and is broken down in the Krebs cycle.
D. Glycolysis begins glucose metabolism, and in the absence of oxygen, lactic acid fermentation takes over.
What is the Compacted/condensed "copy" of a chromosome? Only visible during M-phase. Each side will separate during Anaphase. (Sisters) What is each side called?
Chromosome
Chromatin
Chromatid
DNA
The compacted/condensed copy of a chromosome visible during the M-phase and each side separated during the anaphase is called (sister) chromatid, 3rd option.
What are chromatids?A chromatid is a part of the two identical halves of a chromosome that has been replicated during the the anaphase of cell division. They are known as sister chromatids and are joined at constricted region of the chromosome.
They are also the known as daughter cells to chromosomes. They are made of chromatin fibers during the meiosis and mitosis. Another name for these sister chromatids are dyad. All of this process occur after DNA replication.
Find out more on chromatids here: https://brainly.com/question/1086423
#SPJ1
In the process of carbon ____, carbon dioxide is incorporated into a molecule of ribulose diphosphate forming an unstable 6 carbon intermediate that immediate that immediately splits into two 3 carbon molecules
Fixation
Answer: Fixation
Explanation:
A synthesis of the antibiotic natural product y-indomycinone involved the halogenation reaction shown below. The major product of the reaction is a monobrominated compound, and a significant amount of a minor, dibrominated compound is also formed.
When the double bond between carbon atoms in a molecule is broken, the alkene halogenation reaction, specifically bromination or chlorination, takes place. The halides from the opposing sides of the molecule add to nearby carbons.
A halogen atom is replaced with another substance in a process known as halogenation, where the halogen atom eventually becomes a component of the new substance or compound. In general, one or more halogens are typically added to the chemical during the halogenation reaction. The process of replacing any number of hydrogen atoms with the aforementioned group of elements is known as halogenation. The result of halogenation will have different and new properties from the original substance. Halogens are a class of elements that includes substances like iodine, chlorine, fluorine, and bromine. These components typically behave similarly, which is why they belong to the same group.
The complete question is;
A synthesis of the antibiotic natural product y-indomycinone involved the halogenation reaction shown below. The major product of the reaction is a mono brominated compound, and a significant amount of a minor, dibrominated compound is also formed. Modify the given structure to draw the major product a mono brominated compound. Lone pairs not required.
Learn more about bromination here:
brainly.com/question/24202507
#SPJ4
the highlighted structure articulates with which structure and bone? the highlighted structure articulates with which structure and bone? coronoid process of the ulna coronoid fossa of the humerus radial notch of the ulna radial fossa of the humerus
The highlighted structure articulates with the structure and the bone is a radial notch of the ulna.
(Highlight is in the picture)
The articular surface of the ulna is called the radius the ulnar notch is at the distal radius, and is narrow, concave, smooth, and articulates with the head of the ulna to form the distal radioulnar joint.
The top of the ulna forms a C-shaped protrusion, consisting of a radial notch and a trochlear notch. The radial notch is the point where the radius joins the ulna. These two structures rest on one another and join to form the forearm. In addition, this structure allows the ulna to function properly. This notch allows fingers to move smoothly and freely.
Complete question:
The highlighted structure articulates with which structure and bone? (the choice is)
coronoid process of the ulna
coronoid fossa of the humerus
radial notch of the ulna
radial fossa of the humerus
Learn more about the radial notch of the ulna at https://brainly.com/question/18484639
#SPJ4
Students are comparing the functions of carbohydrates and lipids. Which cellular function would be shared between carbohydrates and lipids?.
The cellular function that would be shared among carbohydrates and lipids is a) energy storage.
Carbohydrates and lipids both are made from long chains of monomers and hence have a huge amount of energy stored in between the bonds of the monomers that make them.
Both carbohydrates and lipids are used for energy storage inside the body. When the monomer chains that make carbohydrates and lipids are broken, energy in the form of ATP is released that is used by the cell for performing the basic functions of the cell.
Hence, although carbohydrates and lipids are different macromolecules, they both have one similar cellular function that is energy storage.
Although a part of your question is missing, you might be referring to this question:
Students are comparing the functions of carbohydrates and lipids. Which cellular function would be shared between carbohydrates and lipids?
a) energy storage
b) protein formation
c) energy consumption
To learn more about lipids, click here:
https://brainly.com/question/17352723
#SPJ4
the population of town a is less than the population of town b. however, the population of town a is growing faster than the population of town b. write a program that prompts the user to enter: the population of town a the population of town b the growth rate of town a the growth rate of town b
If the population of town A is less than the population of town B. However, if the population of town A is growing faster than the population of town B then we can write a C++ program to explain it.
#include<iostream>
using namespace std;
void main()
{int townA_pop,townB_pop,count_years=1;
double rateA,rateB;
cout<<"please enter the population of town A"<<endl;
cin>>townA_pop;
cout<<"please enter the population of town B"<<endl;
cin>>townB_pop;
cout<<"please enter the grothw rate of town A"<<endl;
cin>>rateA;
cout<<"please enter the grothw rate of town B"<<endl;
cin>>rateB;
while(townA_pop < townB_pop)//IF town A pop is equal or greater than town B it will break
{townA_pop = townA_pop +( townA_pop * (rateA /100) );
townB_pop = townB_pop +( townB_pop * (rateB /100) );
count_years++;
}
cout<<"after "<<count_years<<" of years the pop of town A will be graeter than or equal To the pop of town B"<<endl;
}
The complete question is:
The population of town A is less than the population of town B. However, the population of town A is growing faster than the population of town B. Write a program that prompts the user to enter: The population of town A The population of town B The growth rate of town A The growth rate of town B The program outputs: After how many years the population of town A will be greater than or equal to the population of town B The populations of both the towns at that time. (A sample input is: Population of town A = 5,000, the growth rate of town A = 4%, the population of town B = 8,000, and growth rate of town B = 2%.)
To learn more about C++ programming please click on the given link: https://brainly.com/question/13000217
#SPJ4
which stateent correctly explains why these species are still restricted to growing in moist environments
Their gametes must swim in order to interact and for fertilization to occur is the correct statement that explains why these species are still restricted to growing in moist environments.
A gamete is a plant or animal's reproductive cell. Male gametes in animals are known as sperm, and female gametes are known as ova or egg cells. Sperm and ova are haploid cells, meaning that each cell only has one copy of each chromosome. A new diploid organism is created during fertilisation when a sperm and an ovum combine. The reproductive cells of an organism are called gametes.
A new individual organism or offspring is created via the fusion of gametes, commonly referred to as fertilisation, generative fertilisation, syngamy, and impregnation, and its subsequent development. In this area of the tube, the sperm and egg mate to produce pregnancy. After fertilisation, the fertilised egg starts a quick ascent to the uterus.
learn more about gametes here
https://brainly.com/question/2569962
#SPJ4
teriparatide (a recombinant parathyroid hormone) has been shown to be an effective treatment for women with postmenopausal osteoporosis. they tried testing this as an effective therapy for astronauts in space to limit their bone loss. in theory, what would teriparatide do? click all that apply.
An artificial version of the human hormone parathyroid hormone, which is found in teriparatide injection (PTH). It functions by encouraging the body to produce new bone while boosting bone strength and density.
Teriparatide was superior to bisphosphonates in avoiding fracture in postmenopausal women with osteoporosis in both the short- and long-term follow-up periods, according to the findings of our meta-analysis. Teriparatide prevented both vertebral & non-vertebral fractures better than bisphosphonates. PTH increases the production of pro-osteoclastogenic cytokines such receptor activator of nuclear factor kappa ligand (RANKL) and macrophage colonists factor in osteoblasts and osteocytes to exercise its catabolic effects. Osteoporosis for postmenopausal women hormone who are high risk of bone fracture is treated with teriparatide injection. It lessens the chance that postmenopausal women with osteoporosis may have a bone or spine fracture.
Learn more about hormone
https://brainly.com/question/13020697
#SPJ4
How does porosity relate to the grain size of sediment
a sample of bacteria was added to a culture dish containing a limited food supply. (culture dishes are designed to help bacteria grow.) the dish was kept in an incubator for two weeks, where temperature that bacteria prefer to live in was kept constant. the graph below shows changes that occurred in the bacterial population over the two weeks. which statement provides the best explanation for the population increase then decrease?
o The bacteria were unable to reproduce until day 8.
o The bacteria ate all of the available food.
o The bacteria could not grow at all in the provided temperatures.
o The bacteria could not grow at all with the provided food type.
Answer:
The bacteria ate all of the available food.
Explanation:
(B) is the most reasonable answer. At the start, it mentions that it's at the preferred temperature for the bacteria which rules out (C). It mentioned that the bacteria was growing which rules out (D) for saying it couldn't grow at all and I don't think (A) makes much sense. For even more backup for (B), it mentioned that the food was limited.
9. A plant which is
homozygous tall is crossed
with a plant that has a
short phenotype. What
percentage of plants
will be tall?
O 100%
50%
O 0%
O 25%
Answer:
Explanation:
0%
Suppose a female fruit fly carries a mutation in her nanos gene that prevents expression of the nanos protein in any eggs she produces. Which effect is likely to be observed?.
Her eggs create fruit fly embryos with two heads, one of which is on a gene that blocks the expression of the nanos protein in any subsequent eggs she produces.
Which circumstances would cause developing ducks to lose their webbing?Webbing is lost as a result of apoptosis. Duck embryos that have been experimentally implanted with mutant BMP4 have non-webbed feet. Both the growth of a single organism and the evolution of species distinctions are governed by the actions of genes under the direction of genetic switches.
Which role do gap genes play in Drosophila?In Drosophila melanogaster and other insects, the gap gene system regulates the initial steps of the segmentation pathway. This system plays a crucial part in embryo patterning due to its tractability and has been the area of interest for both experimentalists and computational modelers.
To know more about embryos visit:-
brainly.com/question/1673695
#SPJ4
Bryophytes are usually found in areas that are very wet or damp at least part of the year. Which of the following statements describes characteristics of bryophytes that make them dependent on water? Check all that apply. They have swimming sperm that need water so they can swim to fertilize the eggs of other nearby plants. They do not have lignin-stiffened vascular tissue or roots to effectively distribute water throughout the plant. Some species are able to reproduce asexually through fragmentation.
Characteristics of bryophytes that make them dependent on water is a)They have swimming sperm that need water so they can swim to fertilize the eggs of other nearby plants. So, correct option is A.
The Bryophyta s.l. are a proposed ordered division containing three gatherings of non-vascular land plants (embryophytes): the liverworts, hornworts and greeneries. Bryophyta s.s. comprises of the greeneries as it were. They are distinctively restricted in size and lean toward wet territories despite the fact that they can get by in drier conditions.
The bryophytes comprise of around 20,000 plant species.Bryophytes produce encased regenerative designs (gametangia and sporangia), yet they don't create blossoms or seeds. They repeat physically by spores and agamically by discontinuity or the development of gemmae. However bryophytes were considered a paraphyletic bunch lately, practically all of the latest phylogenetic proof backings the monophyly of this gathering, as initially characterized by Wilhelm Schimper in 1879.
Hence, option A is correct.
To know more about Bryophytes, visit here:
https://brainly.com/question/12375814
#SPJ4
(Complete question) is:
Bryophytes are usually found in areas that are very wet or damp at least part of the year. Which of the following statements describes characteristics of bryophytes that make them dependent on water? Check all that apply.
A)They have swimming sperm that need water so they can swim to fertilize the eggs of other nearby plants.
B)They do not have lignin-stiffened vascular tissue or roots to effectively distribute water throughout the plant.
C) Some species are able to reproduce asexually through fragmentation.
1. why does a multicellular organism need to control and coordinate cell division? what might be the consequences of uncontrolled cell division in a multicellular organism?
Cell division occurs for three reasons: reproduction, growth, repair, and renewal. Reproduction —asexual reproduction—one-celled organisms reproduce through mitosis Cell division promotes growth by transforming a fertilised egg into a multicellular organism.
Repair and regeneration — replaces cells that die as a result of normal wear and tear or injury. As we all know, reproduction is necessary for the continuation of life. Cell division is required to generate genetic diversity. Cell division is an important process by which a unicellular organism develops into a new organism in unicellular organisms. Growth factors include cell coordination and protein signals released by body cells that stimulate other cells to divide. Positional Inhibition—In order to divide, animal cells must be anchored (attached to a substrate) and cannot be overcrowded ("Density Dependant Inhibition") - Cells that are overcrowded stop dividing. Each cell binds a small amount of growth factor, resulting in insufficient activator to cause division in any single cell.
Learn more about cell division here:
https://brainly.com/question/13312481
#SPJ4
why have we not found examples in the fossil record of every animal that ever lived on earth? select all that apply.
We don’t find examples in the fossil record of every animal that ever lived on earth due to the following reasons
a fossilized animal must have been buried for tens of thousands or millions of years before it (and the layer around it) solidified into rock.
What are fossils?
Any preserved traces of a once-living thing from a previous geological epoch are referred to as fossils.
Many fossils are still hidden. They are only accessible when they are exposed due to excavation. Before it has a chance to decay, an animal must be promptly and thoroughly buried in ash or sediment in order to become a fossil.
Therefore examples in the fossil record of every animal that ever lived on earth cannot be found.
To know more fossils from the given link
https://brainly.com/question/11829803
#SPJ4
Mishkin, Ungerleider, and Macko (1983) argue that the large receptive fields of inferior temporal neurons provide a neural basis for a particular visual ability. What is that ability?
The large receptive fields allow for translation invariance, which is the ability to recognize the same object regardless of the position in the visual field.
The large receptive fields of inferior temporal lobe neurons enable translational invariance, the ability to perceive the same object regardless of its position in the visual field.
Are neural network translations immutable?In general, convolutional neural networks (CNNs) are assumed to be architecturally invariant to translation, thanks to the convolution and/or pooling operations they have. In fact, several papers have found that these networks are systematically unable to recognize new objects in locations where they have not been trained.
What is translation invariance and where is it used??Translation invariance means that the system will produce exactly the same answer no matter how the input is translated. For example, a face detector could report "FACE DETECTED" for all three images in the top row.Translation invariance can also be achieved by applying a pooling operation. That is, after pooling is applied, the region or object is invariant to (small) translations. Translational invariance is a highly desirable property in many tasks such as object recognition and speech recognition.To learn more about temporal neurons visit:
https://brainly.com/question/28495014
#SPJ4
What kingdom and class would this fossil belong to? Explain why.
This fossil belong to Kingdom: Animalia Class: Actinopterygii because they are the member of ray refined fish.
What are fossils?Fossils are defined as the well-preserved remnants of plants and animals whose corpses were buried in sand and mud beneath ancient seas, lakes, and rivers. The evolution of plants and animals as well as how they adapted to their habitats are both strongly supported by fossil data.
The remains of dead organisms are preserved in fossils. This is the earth's former inhabitants' impression. the history's final holdout. A Tall Drink of Water - The Fossil Falls region is unique among the many waterfalls in the Cascade Kingdom.
Thus, this fossil belong to Kingdom: Animalia Class: Actinopterygii because they are the member of ray refined fish.
To learn more about fossils, refer to the link below:
https://brainly.com/question/6867325
#SPJ1
Exotoxins can be grouped into functional categories according to the tissues they affect
•Neurotoxins damage nervous system
•Enterotoxins cause intestinal disturbance
•Cytotoxins damage variety of cell types by either interfering with cellular mechanisms or lysing cells
Both neurotoxins and enterotoxins can disrupt the digestive system. Cytotoxins harm several cell types by disrupting cellular processes or lysing cells. superantigens (Type I toxins), exotoxins (Type II toxins) that disrupt the membranes of host cells, A-B toxins, and other toxins that impair host cell function (Type III toxins).
By causing cell death or obstructing normal cellular metabolism, an exotoxin can cause injury to the host. They are extremely strong and capable of causing the host tremendous harm. Exotoxins, like endotoxins, can leak during cell lysis or can be secreted.
learn more about Exotoxins here:
https://brainly.com/question/29585652
#SPJ4
bark consists of a) cork only. b) cork cambium and pith. c) secondary phloem, cork cambium, and cork. d) secondary xylem, cork cambium, and cork.
Bark consist of secondary phloem, cork cambium and cork (c).
What parts make up tree bark?Bark is the outermost part of stems and roots of woody plants such as trees. It provides significant support and protection from many form of damages.
As woody plants grow, they will grow by adding cells to the internal layers. Since the vascular cambium is the main growth layer in woody plants, addition of cell layers to the inside ring of vascular cambium cause the outside is pushed outward. It will forms another part named bark.
Bark consist of tissues outside the vascular cambium. The inner bark is composed of living tissues, secondary phloem.There is also cork cambium which develops and forms cork cells. This cells push the old secondary phloem outward and eventually die and slough off. All tissues outside the cork cambium constitute the outer bark, including the nonfunctional phloem and cork cells. Thus the outer bark is made up of dead tissue.
Learn more about vascular cambium by clicking this linkhttps://brainly.com/question/13927039
#SPJ4
what is the primary method of energy acquisition for phytoplankton? group of answer choices oxygen metabolism chemosynthesis respiration photosynthesis methane metabolism
The correct answer is c) Photosynthesis. This is the primary method of energy acquisition for phytoplankton.
The autotrophic (self-feeding) members of the plankton community and a crucial component of freshwater and ocean ecosystems are phytoplankton.
Photosynthesis is how land plants like trees and phytoplankton get their energy. As a result, phytoplankton lives on the well-lit surface layers (euphotic zone) of seas and lakes because they need sunlight to survive. Phytoplankton are dispersed over a larger surface area than terrestrial plants, are subject to less seasonal change, and have noticeably higher turnover rates than trees (days versus decades). As a result, phytoplankton reacts to changes in the climate quickly on a global scale.
The full question is:
What is the primary method of energy acquisition for phytoplankton?
a. oxygen metabolism
b. chemosynthesis
c. photosynthesis
d. methane metabolism
e. respiration
To learn more about phytoplankton click on this link: https://brainly.com/question/1807428
#SPJ4
transcription and translation are seperate processes in gene expression; however they have simialarities. the following terms all relate to translation. which of these has a role that is most similar to that of the transcription start site during transcription
By converting the DNA code into a complementary RNA code, transcription is the process of creating RNA from a DNA template. The process of translating an mRNA template into a protein involves changing the mRNA's coding into the amino acid sequence of the protein.
DNA, the subunit, and the RNA polymerase core enzyme are the initial transcription components. mRNA, small and large ribosomal subunits, initiation factors, elongation factors, and tRNA are some of the components involved in translation. In order for the transcription enzyme to reach the template strand, a DNA double helix must be denatured. Since the template is a single mRNA strand, no such denaturing is required during translation. RNA is the end result of transcription and is found as mRNA and tRNA.
To learn more transcription and translation follow:
https://brainly.com/question/8411795
#SPJ4
for the following traits, the concordances of mz and dz twins are given as percentages. which trait is unlikely to have a strong genetic influence?
Traits that may not have a strong genetic influence on the concordance of MZ and DZ twins given as proportions are 59% in MZ and 62% in DZ.
Generally, from a genetic point of view, MZ, which means monozygotic twins, has a genetic concordance that is stronger than DZ or dizygotic twins. Monozygotic twins are produced by a single zygote and thus share more genes than dizygotic twins which share relatively few genes.
So, the genetic concordance is generally very strong between two monozygotic, so the proportion must be more in them.
In this question first of all the four traits have more proportion of genetic concordance in monozygotic, but in the last trait genetic concordance shows more in dizygotic twins, this is a phenomenon that is impossible to ask in this question, so the answer is 59 % in monozygotic and 62% in dizygotic.
For complete questions, see the picture.
Learn more about the concordance of MZ and DZ at https://brainly.com/question/28901686
#SPJ4