Answer:
Pollution increases
Explanation:
Pollution is a major threat to biodiversity, and one of the most difficult problems to overcome; Pollutants do not recognize international boundaries. For example, agricultural run-off, which contains a variety of fertilizers and pesticides, may seep into ground water and rivers before ending up in the ocean. Atmospheric pollutants drift with prevailing air currents and are deposited far from their original source.
Optogenetics is a powerful tool that uses light to control the activity of specific neurons. These neurons contain artificially introduced light-gated ion channels. A number of different light-gated channels with different ion specificities have been either found in nature (such as the sodium-specific channelrhodopsin, originally found in green algae) or produced via genetic engineering (the production of a chloride ion-specific form of channelrhodopsin). There are also light-gated ion channels specific for potassium or calcium. Sort each light-activated channel type based on whether activation of this channel will tend to depolarize cells or not.
a. chloride channel
b. sodium channel
c. calcium channel
d. potassium channel
A. Promote Depolarization
B. Inhibit Depolarization
Answer:
Sodium and calcium promote depolarization
Chloride and potassium inhibit depolarization
Yeasts are single-celled eukaryotic organisms. Yeasts undergo mitotic division when conditions are favorable. When limited nutrients are available, yeasts start dividing by the process of meiosis.
What is a likely reason for the change from mitosis to meiosis during reproduction under these conditions?
The process of meiosis produces greater numbers of yeast cells at a faster rate as compared to mitosis.
Crossing over of genes during meiosis increases diversity and the chance of survival of the next generation.
Duplication of genes during meiosis ensures efficient functioning of the newly formed yeast cells.
The yeast cells formed by meiosis are able to adapt as well as the parent cell because they are identical.
Yeasts change from mitotic to meiotic division when conditions are unfavorable because meiosis increases genetic diversity and improves their chances of survival in unfavorable conditions.
During meiosis, crossing over of genetic materials between non-homologous chromosomes creates genetic recombination and makes the resulting offspring to be genetically more diverse than their parents.
The increased genetic diversity will increase the chances of survival of the offspring in a constantly changing environment. In other words, the more genetically diverse a population is, the more their chances of surviving adverse environmental conditions.
More on genetic variability can be found here: https://brainly.com/question/13952713?referrer=searchResults
assume that an orbit of a skull was damaged in an accident which bones of a skull might need to be considered for reconstruction in an orbital surgery?
Explanation:
Orbital injuries are normal but difficult to treat. The dorsal, lacrimal, superior and smaller sides of the sphenoid, and patella bones are called the bony sphere. The ethmoid, prefrontal, and maxillary bones serve as suspension systems for the ear sphere and are directly connected to sinus.
bacteria enter the body through contaminated foods, releasing harmful toxins that impair the body's ability to fight off infection. which body systems are involved in this scenario??
Answer:
Immune System is involved to fight against bacteria.
What% of DNA does a clone share with it's parent?
Answer: if its anasexual its 75%-100 if its a sexual its at a minimum of 50-25%
Explanation:
How do T cells coordinate the immune system?
Answer: Helper T cells, or Th cells, coordinate immune responses by communicating with other cells. In most cases, T cells only recognize an antigen if it is carried on the surface of a cell by one of the body's own MHC, or major histocompatibility complex, molecules.
Explanation:
Answer:
T cells identify pathogens based on antigens on the surface of pathogens. The T cells then multiply and stimulate B cells to produce antibodies. The antibodies attach to the antigens, making the pathogens a target for phagocytes.
Explanation: sample response
HI
The cell membrane is a protective external layer that controls
which substances are allowed to enter and leave the cell. The
cell membrane performs the same function in the cell as which
structure in the human body?
Blood
Skeleton
Skin
Hair
Answer:
Skin
Explanation:
Skin is the protective external layer in the human body that allows substances such as water to leave/enter.
346 56
70 86 90 10
100 110 120 130 140 150 160 170 180 190 200 210
236
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QUESTION 17
Item A
" "Item B
DARK CHOCOLATE NUTS & SEA SALT
DARK CHOCOLATE CHUNK
Nutrition
Facts
Serving size
1 bar (409)
Calories 200 Sodium 140mg
ArtServing Daily Value Angerving Daily Value
Total Fat 159 19% Total Carb. 169 696
Sat. Fat 39
15% Fiber 79
25%
Trans Fat og
Total Sugars 59
Polyunsaturated Fat 3.59 nd. 4g of Added Sugars 896
Monounsaturated Fat 89 Sugar Alcohol og
Cholesterol Omg 0% Protein 69
6%
Vitamin D 0% Calcium 4% Iron 6%. Potassium 4%
Daily Value Amount/Serving
Nutrition
Daily Value
Total Fat 5g
Facts
6% Total Carb. 239
8%
Sat. Fat 1.59 8%
Dietary Fibor 29 7%
Serving size Trans Fat og
Polyunsaturated Fat 19
Total Sugars 89
1 bar (359)
Monounsaturated Fat 2.59
Ind. 89 Added Sugars 10%
Cholesterol 0mg 0% Sugar Alcohol og
3% Protein 2g
Vitamin D 0% Calcium 2% • Iron 6%. Potassium 2%
Calories 150 Sodium 65mg
INGREDIENTS: Almonds, peanuts, chicory root
fiber, honey, palm kernel oil, sugar, glucose syrup.
rice flour, unsweetened chocolate, cocoa powder,
sea salt, soy lecithin, natural flavor, cocoa butter.
INGREDIENTS: Oats, cane sugar, semi-sweet chocolate (sugar, chocolate
liquor, cocoa butter, soy lecithin, vanilla extract), canola oil, tapioca syrup,
brown rice, millet, honey, coconut, buckwheat, amaranth, molasses,
brown rice flour, oat flour, gum acacia, quinoa, sea salt, brown rice syrup.
vanilla extract, Vitamin E (tocopherols to maintain freshness).
KIND
AUTY PRE
Allergen Information: Contains almonds, peanuts
and soy.
Made in a facility that processes tree nuts and
sesame seeds.
May contain nut shell fragments.
KIND Pacetate Chunk
HEALTHGRANS SRL
Allergen Information:
Contains coconut and soy.
Made in a facility that process.
es peanuts, tree nuts and
sesame seeds
+
SITE
If someone were to ask you which one they should consume as a snack, which would you choose? Justify your answer using information
provided from the labels.
Answer:
i dont know what this is sorry
Explanation:
Answer:
im srry love i dont know it too long
Explanation:
Make a pedigree for left-handedness using information of the Thomas family:
The father, Tom, and mother, Diane, have three children. The two oldest children are Anna and Mary and the youngest child is Teddy. The oldest daughter, Anna, is married and has an older son, Will, and younger daughter, Vanessa. Mary is also married and has a son, Patrick. Teddy is not yet married. Everyone in this family is right handed except the father, the oldest daughter, and the granddaughter. Right-handedness is dominant.
Answer: You will find the pedigree in the attached files
First-generation (Parents):
• Tom: rr
• Diane: Rr
Second generation (Children):
• Anna: rr
• Anna´s husband: Rr
• Mary: Rr
• Mary´s husband: RR, Rr, or rr
• Teddy: Rr
Third generation (Grandchildren):
• Will: Rr
• Vanessa: rr
• Patric: RR or Rr
Explanation:
Due to technical problems, you will find the complete answer and explanation in the attached files
Using the sliding flament theory, explain (or draw) the process of sarcomere shortening. Start from the point where calcium would interact with troponin. Make sure to discuss the roles of actin, myosin, and ATP.
Answer:
Calcium binds to troponin CTroponin T moves tropomyosin and unblocks the binding sitesMyosin heads join to the actin forming cross-bridges ATP turns into ADP and inorganic phosphate and releases energyThe energy is used to impulse myofilaments slide producing a power strokeADP is released and a new ATP joins the myosin heads and breaks the bindings to the actin filamentATP splits into ADP and phosphate, and the energy produced is accumulated in the myosin heads, starting a new cycle Z-bands are pulled toward each other, shortening the sarcomere and the I-band, producing muscle fiber contraction.Explanation:
In rest, the tropomyosin inhibits the attraction strengths between myosin and actin filaments. Contraction initiates when an action potential depolarizes the inner portion of the muscle fiber. Calcium channels activate in the T tubules membrane, releasing calcium into the sarcolemma. At this point, tropomyosin is obstructing binding sites for myosin on the thin filament. When calcium binds to troponin C, troponin T alters the tropomyosin position by moving it and unblocking the binding sites. Myosin heads join to the uncovered actin-binding points forming cross-bridges, and while doing so, ATP turns into ADP and inorganic phosphate, which is released. Myofilaments slide impulsed by chemical energy collected in myosin heads, producing a power stroke. The power stroke initiates when the myosin cross-bridge binds to actin. As they slide, ADP molecules are released. A new ATP links to myosin heads and breaks the bindings to the actin filament. Then ATP splits into ADP and phosphate, and the energy produced is accumulated in the myosin heads, which starts a new binding cycle to actin. Finally, Z-bands are pulled toward each other, shortening the sarcomere and the I-band, producing muscle fiber contraction.
Which of the following is not a possible effect of increasing carbon dioxide levels in the atmosphere? a. increase in water contamination and floods b. ocean acidification c. cutting down forests d. reduction of cold-related deaths
Answer:
C. Cutting down forests.
Explanation:
Carbon dioxide is an inorganic gaseous molecule with the chemical formula, CO2. It is naturally released into the atmosphere via a lot of processes. However, CO2 is the most important greenhouse gas as it contributes the most to the global warming effect of the Earth.
The effects of an increase in CO2 concentration in the atmosphere is as follows:
- increase in water contamination and floods
- ocean acidification
- reduction of cold-related deaths
However, the cutting down of forests is not an effect of an increase in CO2 concentration but rather a cause.
Answer:
C
Explanation:
Edg 2020-2021
How does artificial selection cause rapid changes in the phenotypes of organisms?
A.By selecting dominant genotypes
B.By changing the number of
chromosomes
C.By changing the frequency of alleles and
selecting new combinations of traits
D.By stimulating the species to increase
the production of new mutants
Answer: A. By selecting dominant genotypes
Explanation:
Artificial selection or selective breeding can be defined as the induced breeding process in which humans select parents of plants and animals that have desired traits that are beneficial for them to produce offspring that have characteristics of both parents and they are of improved yield and quality. This brings the change in the phenotypes of the offspring as compared to the parents. As the passage of dominant desirable traits in the genotype from either of the parent when gets expressed then the phenotype of the organism also change.
What methods are used
to classify living things
Into groups?
Explanation:
We can classify living things on these things:-
1) If they can carry out processes like respiration, ingestion.
2) If they move on their own
3) if they can talk
THIS WAS A FAIRLY SIMPLE QUESTION!
4. What term describes the reactants that an enzyme
acts on?
An _______________ is a group of organisms and other non-living parts of the environment that lives in an area.
Answer:
ecosystem
Explanation:
The water vascular system of echinoderms (A) functions as a circulatory system that distributes nutrients to body cells. (B) functions in locomotion and feeding. (C) is bilateral in organization, even though the adult animal is not bilaterally symmetrical. (D) moves water through the animal’s body during filter feeding. 4. Which of the following combinations of phylum and description is correct? (A) Echinodermata—radial symmetry as a larva, coelom (B) Nematoda—roundworms, internal skeleton (C) Platyhelminthes—flatworms, gastrovascular cavity, no body cavity (D) Porifera—gastrovascular cavity, coelom
Answer:
The water vascular system of echinoderms (B) functions in locomotion and feeding.
Which of the following combinations of phylum and description is correct? (C) Platyhelminthes—flatworms, gastrovascular cavity, no body cavity
Explanation:
Echinoderms are marine animals. They have a water vascular system that make them able to move (locomation), respiration and food and waste transportation. This system is full of different canal along the body.
Echinodermata has not a radial symmetry as a larva, in fact it has a bilateral symmetry and coelom present. When it comes to Nematoda, they are roundworms and have a pseudocoelomate. Finally, porifera has a gastrovascular cavity and no coelom.
Where is DNA present inside a eukaryotic cell?
Where is DNA present inside a eukaryotic cell?
Answer:NucleusEuploid changes occur by which of the following developmental errors. A. Non-disjunction during Anaphase I of meiosis. B. Non disjunction during Anaphase II of meiosis. C. Failure of cell division and production of unreduced gametes during meiosis. D. Somatic doubling in the meristem leading to reproductive organs. E. Both A and B are correct. F. Both C and D are correct. G. All the answers are correct.
Answer:
A. Non-disjunction during Anaphase I of meiosis.
Explanation:
Euploidy is an alteration in the organism´s natural number of chromosomes. Individuals with euploidy express a different number of homologous chromosomes set than the one from the normal number.
The cause of this alteration is that homologous chromosomes do not separate during the anaphase of meiosis 1.
There are two types of euploidy:
Polyploidy: Increase in the number of chromosomes characteristic of a diploid complement. During anaphase 1, homologous chromosomes do not separate and migrate together to the same pole. One of the resulting gametes ends with the whole chromosomic material, while the other cell ends with non. The first one goes through the second phase of meiosis and forms two diploid gametes. Monoploidy: Decrease in the normal number of chromosomes. The individual only gets one set of chromosomes. This is a monoploid organism, n.Euploid changes usually takes place as a result of this below developmental errors: is A. Non-disjunction during Anaphase I of meiosis.
Euploidy can be regarded as chromosomal variation which usually take place on the entire set of chromosomes in a cell or an organism.Euploidy can comes in three ways which are;
monoploidydiploidypolyploidyEuploid is due to Non-disjunction that usually occur during Anaphase I of meiosis and this alterations is because of failure of homologous chromosomes to separate during the anaphase of meiosis 1.Therefore, option A is correct.
Learn more at:
https://brainly.com/question/12451788?referrer=searchResults
Answer the questions below. Will mark the correct answer as brainliest and report irrelevant answers.
Answer:
The reasons are the following.
Explanation:
Bear can live on land in a very cold regions of earth with the help of its thick skin and more hair on its body.
Frogs lives on lands due to its body structure and food availability. It has sticky tongue that captures insects.
Humans lives on lands not in water due to its body structure because its body structure can't allow humans to live in water due to absence of gills.
Seagull lives in the aquatic ecosystem because seagull feeds on fishes and other marine animals.
Sharks lives in water due to its body structure such as gills that are used to respire in water and the shark can't respire without water.
Meerkat lives in the arid climate because they lives underground to save themselves from the environment and the presence of food.
Protea lives in desert due to their dry skin that can tolerate the warm temperature.
Lions lives in the jungle due to the presence of food such as deer, buffalo etc and warm environment.
Dragonfly lives on land and water due to feed on the larva of mosquitoes that is present in the water bodies and good environmental conditions.
Look at the pedigree below, does anyone in the 4th generation have cystic fibrosis?
A No
B Yes, just Child 2
C Yes, Child 1 & 2
D Yes, Child 3
E Yes, just Child 1
Answer:
C
Explanation:
Child 1 and 2 are both filled in and Child 3 is a carrier, as indicated by the key to the right of the pedigree.
The leaves of plants have layers that perform different functions. The_____ layer contains chlorophyll which carries out most of the photosynthesis in the leaf.
Answer:
The palisade layer
Explanation:
The palisade mesophyll layer of the leaves is a layer of columnar cells that contain many chloroplasts. This layer is localized right below the epidermis and cuticle of a leaf. The chloroplasts localized in this layer contain chlorophyll, which is the green pigment used to absorb light in order to carry out photosynthesis.
Which natural material is most often used to make paper?
Will give BRAINLY
Answer:
I believe that A Wood is correct
A. Which two organisms are most closely related?
PLEASE ANSWER ASAP!!
Which of the following is most likely to cause the extinction of a species?
O A. genetic variation
O B. mutation
O C. natural selection
O D. a changing environment
Answer:
changing environment
Explanation:
If the species fails to adapt, it will die off.
If dylan which has AB- has kids with O blood, could they have a child with O blood. Explain..
Answer:
They could not have O blood because blood types A and B are dominant and O blood is recessive. The only way They could have a child with type O blood is if Dylan was a carrier.
Explanation:
Punnet squares!
Place the following items in the correct order from most simple at the top to the most complex at the bottom. Drag and drop the terms until you have the correct order.
Tissue, organ system, atom, organelles complex organism, cell, molecules, Organ,
Answer:
- atom
- molecules
- organelles
- cell
- tissue
- organ
- organ system
- complex organism
Explanation:
A student wishes to target hexokinase, a cytosolic enzyme of glycolysis, to the mitochondria of cells in culture as a project for a senior honor's thesis in her college. What experiment would be necessary to accomplish this task
Answer:
The correct way to accomplish this task is that the student needs to clone a transit sequence into the gene for hexokinase into these cells.
Explanation:
Clone is a hereditarily indistinguishable duplicate of a living being. It could be normally happening or made in the lab. There are various sorts of cloning systems; the most ordinarily utilized strategy is rDNA innovation and technology. During the cycle of rDNA innovation, unfamiliar DNA particles brought into target cells through the vector ( for example Plasmid). This technique is most generally utilized in gene transfer methodologies and gene articulations studies.
So, from the experiment; The correct way to accomplish this task is that the student needs to clone a transit sequence into the gene for hexokinase into these cells.
what stage of meiosis is seen here:
telophase
telophase 1
telophase 2
interphase
Answer:
It looks like Telephase 1
How are liquid wastes treated at a wastewater treatment plant?
Answer:
They are released into a river, lake, or ocean.
Explanation:
During protein synthesis, what carries amino acids to the ribosome?
Answer:
tRNA
Explanation: