Small swellings that are found at the terminal ends of axons.
(Please mark me brainliest! thank you in advance!!)
A. Which two organisms are most closely related?
During Prophase 1, chromosomes from each parent pair up
based on their similarity. These paired chromosomes are called
chromosomes.
During Prophase 1, chromosomes from each parent pair up based on their similarity. These paired chromosomes are called homologous chromosomes.
What are Chromosomes?Chromosomes may be defined as thin, thread-like structures that are appeared during the process of cell division. These structures may consist of DNA, RNA, histone, and non-histone proteins. Chromosomes were discovered by E. Strasburger in 1875.
Homologous chromosomes may be characterized as a set of one maternal and one paternal chromosome that significantly pairs up with each other inside a cell during fertilization. They always paired up on the basis of their similarities.
Therefore, during Prophase 1, chromosomes from each parent pair up based on their similarity. These paired chromosomes are called homologous chromosomes.
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White-tailed deer populations in the Texas Hill Country have been increasing for years. The area is now overpopulated
with white-tailed deer. What is the most likely result of this overpopulation?
A White-tailed deer will all migrate out of the Hill Country in the order to avoid competing for food, water, and
space and will not retum until the resources recover from the overpopulation.
B White-tailed deer will experience increased competition for food, water, and space, and the deer will be
vulnerable to starvation and disease because the population exceeds the available resources
c White-tailed deer will stop producing offspring until the population returns to a level that can be supported by
the available resources in the area.
DWhite-tailed deer will become omnivores in order to have more available resources and avoid competing with
one another for food.
Answer: b
Explanation: I just feel like it’s the best answer choice
Answer:
B. The white tailed deer will experience increased competition for food, water, and space, and the deer will be vulnerable to starvation and disease because the population exceeds the amount of resources
Explanation:
My teacher just discussed this question in class, this is the right answer :)
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.
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.
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.
Which natural material is most often used to make paper?
Will give BRAINLY
Answer:
I believe that A Wood is correct
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:
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.
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 are liquid wastes treated at a wastewater treatment plant?
Answer:
They are released into a river, lake, or ocean.
Explanation:
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!
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
What was the industrial revolution of peppered moth's
Answer:
Before the industrial revolution, peppered moths camouflaged with the bark on trees. During the the industrial revolution the bark of the trees darkened, so the white moths no longer camouflaged with the bark. However, the black moths did camouflage.
Why does a tertiary have to eat so much to stay alive
Answer:
Because there are losses in energy between levels, the population between levels also diminishes. With less energy, there are less creatures that can be supported by it, so the level with the least amount of creatures would be the tertiary consumers, while the level with the most organisms would the producers.
Explanation:
I hope that this helps ;)
The tertiary consumers in the trophic level receive a very little amount of energy in a food chain. This is because these organisms are found at the top level and 10% of energy is only transferred from one trophic level to another.
What do you mean by Trophic levels?Trophic levels may be defined as the sequential arrangement of the organisms in the ecosystem with respect to their function and eating habits.
With this 10% energy transferred, top-level consumers received it in a very small amount. So, in order to increase their relative fitness, they have to eat too much food.
Therefore, it is well described above.
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Hemophilia is a recessive sex-linked disorder. A man with hemophilia has a daughter of normal phenotype. She marries a man who is normal for the trait. What is the probability that a daughter of this mating will be a hemophiliac? That a son will be a hemophiliac? If the couple has four sons, what is the probability that all four will be born with hemophilia.
Answer:
Hemophilia is an X-linked recessive trait.
Explanation:
A non-hemophiliac father and a hemophiliac mother have a son.
What is the percent chance that the son will be a hemophiliac?
what stage of meiosis is seen here:
telophase
telophase 1
telophase 2
interphase
Answer:
It looks like Telephase 1
Where in the Sun does the production of energy take place?
Answer:
The energy is produced in the sun in the core of the sun. The energy is produced by the process of nuclear fusion. The nuclear fusion occurs when two hydrogen nuclei joins to form the helium. In the sun's core there is high temperature and pressure.
Explanation:
Answer:
the core,
Explanation:
The energy is produced in the sun in the core of the sun. The energy is produced by the process of nuclear fusion. The nuclear fusion occurs when two hydrogen nuclei joins to form the helium.
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
During protein synthesis, what carries amino acids to the ribosome?
Answer:
tRNA
Explanation:
Which of the following traits make a good index fossil?
A small geographic range
B large body size
C short-lived as a species
D plants instead of animals
Answer:
d
Explanation:
An index must have animal or plant preserved in the rock record of the Earth that is characteristic of a particular span of geologic time or environment
Short-lived as a species is the trait that make a good index fossil. Therefore, the correct option is C.
What is a fossil?A fossil is the remains or traces of a prehistoric organism, such as a plant, animal, or microorganism, that have been preserved in the Earth's crust over millions of years.
Index fossils are the fossils that are scarce in the time period and are frequently discovered as well as widely dispersed.Traits of a good index fossil are mentioned below:
It is one that existed for a relatively short period of time, which allows for precise dating of rock layers. They are remarkable and widespreadThey have a limited geologic timeThey are abundantThe other traits mentioned (small geographic range, large body size, and being a plant instead of an animal) are not necessarily indicative of a good index fossil. Therefore, the correct option is C.
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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
Eye color is also determined by genes. Brown eyes are dominant, and blue eyes are recessive. What must be true for two brown-eyed parents to produce a blue-eyes child?
Answer:
The brown-eyed parents must be HETEROZYGOUS to produce a blue-eyed child
Explanation:
This question involves a single gene coding for eye color in humans. The allele for brown eyes (B) are dominant over the allele for blue eyes (b). This means that an individual that is heterozygous (Bb) will phenotypically have a brown eyes.
According to this question, a blue-eyed child (bb) will be produced when two brown-eyed parents are HETEROZYGOUS (Bb) for the eye color trait. This means that each of the parent donated the recessive allele (b) to produce the (bb) offspring. Please find the punnet square attached.
Answer:
They each pass on the blue-eye allele
Explanation:
If both parents carry a recessive blue eye gene, then it is possible for the parents to produce a blue-eyed child. The parents must be heterozygous for the eye color trait in order for this to happen. Their genotypes are not the same genes for a trait and are not (BB) or (bb) but instead (Bb). If both parents carry the recessive trait of having blue eyes, they may be able to produce a blue-eyed child.
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.
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:
An _______________ is a group of organisms and other non-living parts of the environment that lives in an area.
Answer:
ecosystem
Explanation:
What system does the Borrelia burgdorferi bacteria enter from the tick to the host?
Nervous system
Muscular-skeletal system
Circulatory system
Respiratory system
What is the purpose of chromosome. A used to pass on genetic traits.B form into haploid cells, making reproduction possible. C are the chemicals needed for mitosis to occur. D are responsible for matching hair colors.
Answer:
A. used to pass on genetic traits
Explanation:
I know things.
Identify the purpose of each of the following steps in the photosynthesis experiment.
a. Hole-punching the leaves
b. Adding bicarbonate buffer to the syringe.
c. Exposing the disks to a vacuum in the syringe
d. Adding a plain buffer to the syringe
Answer:
A. Hole-punching the leaves- The purpose of hole punching the leaves is to make discs out of the leaves which are able to fit in into the syringe used in the experiment and which are also able to float
B. Adding bicarbonate buffer- Bicarbonate buffer is added as a source of carbon to leaves undergoing photosynthesis.
C. Exposing the disc to vacuum in the syringe - the leaves are exposed to vacuum in the syringe in order to remove or displace trapped air in the leaves so that the bicarbonate buffer can enter the interior of the leaves and the disc will then sink to the bottom of the syringe.
D. Adding a plain buffer- the plain buffer serves as the control experiment as it does not provide a carbon source for the discs in the experiment.
Explanation:
The floating disc experiment is used to demonstrate the process of photosynthesis in leaves. In the experment, the following procedures are followed:
A. Hole-punching the leaves- The purpose of hole punching the leaves is to make discs out of the leaves which are able to fit in into the syringe used in the experiment and which are also able to float
B. Adding bicarbonate buffer- Bicarbonate buffer is added as a source of carbon to leaves undergoing photosynthesis.
C. Exposing the disc to vacuum in the syringe - the leaves are exposed to vacuum in the syringe in order to remove or displace trapped air in the leaves so that the bicarbonate buffer can enter the interior of the leaves and the disc will then sink to the bottom of the syringe.
D. Adding a plain buffer- the plain buffer serves as the control experiment as it does not provide a carbon source for the discs in the experiment.
In the results of the experiment, the discs in the bicarbonate buffer will float as oxygen is produced during photosynthesis. However, the discs in the control remain at the bottom of the syringe as photosynthesis do not occur in the absence of a carbon source.
Where is DNA present inside a eukaryotic cell?
Where is DNA present inside a eukaryotic cell?
Answer:Nucleus