You conduct a voltage clamp experiment in which you hold the presynaptic terminal of a glutamatergic neuron (a neuron that releases glutamate) at 0 mV. When you treat the terminal with TTX, an inward current is recorded. Which ion and ion channels are responsible for the current you observe? Group of answer choices Calcium; ligand-gated non-specific cation channels Sodium; ligand-gated non-specific cation channels Calcium; voltage-gated calcium channels Sodium; voltage-gated sodium channels Potassium; voltage-gated potassium channels
Answers
Answer:
Calcium; voltage-gated calcium channels
Explanation:
Voltage-dependent calcium channels represent a group of voltage-gated ion channels and they are recognized to be primary mediators of calcium entry induced by depolarization. These channels are localized in the membrane of excitable cells such as, for example, neuron cells. The potential difference across the membrane of neuron cells without physiological activity is named resting membrane potential. When there is no action potential, voltage-dependent calcium channels are normally closed.
Related Questions
How fast do trees grow
Answers
Answer:
The rate at which trees grow varies depending on the species, environment, and other factors. Some trees can grow up to several feet per year, while others grow more slowly.
A population has 1000 individuals. A PCR analysis of the genotypes of a gene associated with Lactase persistence are: LL = 450 Ll = 250 ll = 300. What are the allelic frequencies of the L and l alleles?
Answers
Answer:
L allele: 0.575 (or 57.5%)
l allele: 0.425 (or 42.5 %)
Explanation:
Homo-zygous individuals have two copies of the same allele (i.e., either L alelle or l allele), while heterozygous individuals carry both alleles at a time (i.e., one L allele and one l allele). In consequence:
- Frequency of the L allele: [(450 x 2) + 250] / 2000 = 0.575
- Frequency of the l allele: [(300 x 2) + 250] / 2000 = 0.425
What happens to the properties of different elements as they come together to make new compounds?
Answers
How do male cichlids protect their fry from predators
Answers
Deer mice are usually dark brown and live in forests with dark soil. However, the deer mice in the Sand Hills of Nebraska are lighter brown and live in an area with light, sandy soil.
Based on this information, what ,begin emphasis,most,end emphasis, likely caused the change in the Sand Hills deer mice?
Answer options with 4 options
A.
Lighter colored mice were preferred by females.
B.
Lighter colored mice came from snowy habitats in the north.
C.
Lighter colored mice had more dominant genes in their new habitat.
D.
Lighter colored mice were more likely to avoid predators and to reproduce.
Answers
Lighter colored mice were more likely to avoid predators and to reproduce. Therefore, option (D) is correct.
The lighter brown coloration of the deer mice in the Sand Hills of Nebraska is likely an adaptation that provides them with a survival advantage in their specific habitat. The light, sandy soil in the area may offer better camouflage for lighter colored mice, making them less visible to predators and increasing their chances of survival.
As a result, these mice would have a higher likelihood of successfully reproducing and passing on their lighter coloration traits to future generations.
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Why do classification systems change over time?
• Scientists find new evidence in their studies.
• Scientists use old methods of classification.
• Scientists repeat experiments and find no changes.
• Scientists find similar evidence to previous work.
Answers
Answer: Scientists find new evidence in their studies.
Explanation: It's correct on EDG
what is the difference between facts theory and hypothesis
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Answer:
Fact: Observations about the world around us. ... Example: “It's bright outside.” Hypothesis: A proposed explanation for a phenomenon made as a starting point for further investigation.
5) Explain why the organisms at the top of a food chain (Eagles, for example) are more affected
by pollution in the ecosystem than organisms lower on the food chain (snails, for example)
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Answer:
if pullution occurs, Fish may be consumed by birds and other animals and the pollution gets transferred through the food chains until it reaches humans.
describe how impulse are transmitted across a synapse
Answers
A tiny electric message moves through a long part of a brain cell called the axon. When a message goes to the end of a nerve, it sends chemicals called neurotransmitters. These substances move through a tiny gap and attach to special parts of another nerve cell's outer covering.
What are the impulse?Messages called impulses are sent from one nerve cell to another through a connection called a synapse. This process is called synaptic transmission. Synapses are connections between nerve cells or between nerve cells and other cells, like muscles or glands.
The neuron sending the signal is called the presynaptic neuron. When a signal travels down a nerve cell, it causes little sacs called vesicles to release chemicals called neurotransmitters.
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Which statement indicates the function of natural killer cells within the immune system?
Attack nonselectively on nonself cells, especially mutated and malignant cells
Answers
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Explanation:
bike pic
The statement "Attack nonselectively on nonself cells, especially mutated and malignant cells" accurately indicates the function of natural killer (NK) cells within the immune system.
What are Natural killer cells?
Natural killer cells or NK cells are a type of lymphocyte that plays a critical role in the innate immune response.
One of their primary functions is to recognize and eliminate cells that are infected with viruses or have undergone malignant transformations, such as cancer cells.
Unlike other immune cells that require prior exposure or recognition of specific antigens, NK cells can attack a broad range of nonself cells without the need for prior sensitization.
They are particularly effective in targeting and destroying cells that display abnormal or altered surface markers, making them an essential part of the body's defense against viral infections and cancer.
Thus, the statement is correct.
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What is the name of the project that had the goal of sequencing all of the bases that make up human DNA?
(A) The Human Genetic Collaboration
(B) The Human Genome Project
(C) The Word Human Study Project
(D) The Genetic Study of Humans
Answers
Answer: (B) the human genome project
Explanation: took the test
Compare and contrast a latent virus and an active virus.
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Answer: An active replication of the viral genome results in a lytic infection characterized by the release of new progeny virus particles, often upon the lysis of the host cell. Another mode of virus infection is the latent phase, where the virus is 'quiescent' (a state in which the virus is not replicating).
Drag each label to the correct location on the image. Not all labels will be used.
Match the labels with the symbols on the weather map.
cold front
warm front
low pressure
strong winds,
cloudless
strong winds,
very cloudy
high pressure
occluded front
I need help now please!
Answers
About the question:
You will find the map in the attached files
Answer:
Cold front → blue line/trianglesWarm front → red line/semicircles Occluded front → lines with triangles and semicircles Low pressure → LHigh pressure → H Strong winds, cloudless → White key Strong winds, very cloudy → Black filled keyExplanation:
ISOBARS:
These are lines that join points of similar pressure and indicate atmospheric pressure for different regions. If lines are very close to each other, means that there will be bad weather. This is because, at a short distance, pressure values change, meaning atmospheric instability.
PRESSURE ZONES:
Isobars indicate the speed and direction of winds. Winds move from high atmospheric pressure areas to lower atmospheric pressure areas. When isobars are placed as small circles, there is a letter indicating the pressure center. It can be either high pressure symbolized with an H, or low pressure symbolized with an L.
High-pressure zones, H, represent anticyclones and are associated with good weather.Low-pressure zones, L, represent cyclones and are associated with bad weather. The closer the lines are to each other, the stronger will be the winds.FRONT TYPES:
There are different types of fronts, which can be represented with different symbols.
Cold front: In weather maps, these are represented with blue lines with triangles indicating the direction of the wind movements. Warm front: In weather maps, these are represented with red lines with semicircles indicating the direction of the wind movements. Occluded front: It can be warm or cold. These are represented with purple lines with triangles and semicircles indicating the direction of the wind movements.CLOUD COVER / WIND SPEED:
Indicated as a key figure on the map.
Circle: Represents the percentage of cloud cover. The clouder it is, the more black will be the circle. Stick: Represents the wind speed. The stick can have lines indicating the degree of speed → stick with no transversal line indicates 1-4 mph, one line means 5-8 mph, two lines 9-14 mph. And so on.
Plant cells vs Animal cells?
Answers
What is one function of the structure labeled Y?
digest prey
pump blood into the heart
remove carbon dioxide from blood
capture prey
Answers
One function of the structure labeled Y is to pump blood into the heart.
The correct option is B.
What is the structure labeled Y in the snail?Structure Y refers to the pericardial cavity which surrounds the heart in snails.
The pericardial cavity plays an important role in the circulation of hemolymph, the snail's equivalent of blood. It functions as a chamber that receives and stores oxygenated hemolymph from the gills and pumps it into the heart, which then distributes it throughout the rest of the body.
Therefore, option "pump blood into the heart" is the correct function of structure Y. Option "digest prey" is not related to the structure Y in snails, and option "remove carbon dioxide from blood" and "capture prey" are not relevant to the circulatory system of snails.
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Complete question:
A snail is shown in the diagram. What is one function of the structure labeled Y?
digest prey
pump blood into the heart
remove carbon dioxide from blood
capture prey
what would most likely result if the four stages of mitosis were not followed by cytokinesis?
Answers
Answer:
Explanation:
If cytokinesis did not occur, the cell cytoplasm will not be able to undergo division or divide. As a result, there won't be division of two daughter cells that are identical to the parent. Therefore, it will remain at rest and there won't be separation or division of the parent cell. The cell will still remain as it was. Therefore, there won't be cell division.
Days when the Earth's poles are tilted at the greatest angle away from or toward the Sun are called
A. equinoxes
B. rotations
C. solstices
D. revolutions
Please select the best answer from the choices provided
Ο Α
B
Ο Ο Ο Ο
с
D
Mark this and return
Save and Exit
Next
Submit
Answers
Answer: C. Solstices
Explanation:
According to Goog|e, solstices are "the time or date (twice each year) at which the sun reaches its maximum or minimum declination, marked by the longest and shortest days (about June 21 and December 22)."
Hope this helps :)
What is the hematocrit if the red blood cells are represented by a measurement of 14 mm, and the overall blood volume is represented by a measurement of 35 mm?
Answers
The trait “hairy ear rims” is thought to be controlled by a gene on the Y chromosomes. State with what frequency a man affected with “hairy ear rims” passes the trait onto his sons.
Answers
have fun with to the bus for me and you know what I do to you and your mom is influenced and I don't know how to the summar
Which species was introduced onto an island in Alaska during World War II?
Please choose the correct answer from the following choices, and then select the submit answer button.
Answer choices
foxes
reindeer
rabbits
brown tree snakes
Answers
During World War II, a reindeer species was transplanted to an island in Alaska.
What occurred in Alaska during World War Two?Japanese bombing of Dutch Harbor and invasion of Attu and Kiska islands in 1942 brought World War II to Alaska. One of the eight places of historical significance in Alaska that honor World War II is the Adak Army Base and Navy Operating Base.
What are the top 5 Alaskan animals?Alaska is home to fantastic wildlife that is as diverse as its surroundings. It is truly the country of the wild animals. The Big 5 of Alaska—the bear, moose, Dall sheep, wolf, and caribou—as well as magnificent marine creatures like humpback whales, orcas, and gray whales, draw tourists from all over the world.
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Evan finds a rock. He scrapes it with his fingernail and leaves a scratch. His rock must be:
O a metamorphic rock
harder than feldspar
softer than diamond
made of more than one mineral
HELLP
Answers
The correct answer is C. Softer than diamond
Explanation:
Evan observation is related to the rock's hardness, which is usually measured on a scale from 1 to 10, in which 10 represents the hardest rock (diamond). In the case of the rock Evan found, the fact the rock can be scratched just using a fingernail shows the hardness of this rock is 2.5 or below because only minerals with this hardness can be scratched using the fingernail, while a higher hardness requires more complex tools.
Moreover, in this level of hardness, there are minerals such as gypsum or talc and these are softer than others such as feldspar with a hardness of 6 or diamond with a hardness of 10. In this context, it is safe to conclude this rock is softer than diamond. Also, hardness is not enough to determine if a rock contains two or more minerals or if it is metamorphic.
The cell membrane, like a ____________ bag, allows some (but not all) materials to go through.The solute molecules tend to even out their concentration throughout the solution through what type of movement? ____________
The movement overall is from regions of ____________ concentration to regions of ____________ concentration
Diffusion does not require any addition of ____________ to the molecules, which already have energy in their ____________.
Answers
The cell membrane is like a plastic sandwich bag (millions of invisible holes).
Explanation:
Where are the A, B and RH antigens located
Answers
Answer: The A, B, and Rh antigens are located on the surface of red blood cells.
Explanation:
Why would it be harder to deprive someone of just NREM sleep than just REM sleep?
Answers
Explanation:
During REM sleep, your eyes move around rapidly in a range of directions, but don't send any visual information to your brain.That doesn't happen during non-REM sleep.
More information
It is harder to wake someone up when their in NREMREM reports are typically rated as more intense, bizarre, perceptually vivid, emotional and kinesthetically engaging [8,11,14] than non-REM reports, which are typically more thought-like and conceptual [16,18].(I just thought that the extra information would help)
(By the way could you mark me as brainliest?)
Please name the 4 phases of Drug Addiction and describe what happens in
each phase.
Answers
Answer:
Stage 1: Drug Experimentation
Stage 2: Social or Regular Use
Stage 3: Risky Use/Abuse
Stage 4: Drug Addiction and Chemical Dependencies
Explanation:
^^^^^^^^^^^.
A testable hypothesis could be formed front which questions
Answers
A testable hypothesis is one that can be tested through empirical research, meaning that it is possible to gather evidence to support or refute it.
A hypothesis is a possible explanation that is proposed for a phenomenon that occurs in nature. In the scientific method, hypotheses are tested by collecting and analyzing data to either support or reject them.
A testable hypothesis could be formed from a question by using the following steps:
Identify the phenomenon that you want to study: Start by identifying the phenomenon that you want to study. This could be a relationship between two variables or a question about how something works. Develop a research question: Based on the phenomenon you want to study, develop a research question that can be answered through empirical research. This question should be specific and should be able to be tested using scientific methods. Formulate a hypothesis: Using your research question, formulate a hypothesis that can be tested through empirical research. This hypothesis should be a statement that proposes a possible explanation for the phenomenon you are studying. It should be clear, concise, and testable.
Test the hypothesis: Once you have developed a testable hypothesis, you can design and conduct experiments to gather data that will either support or refute the hypothesis. If the hypothesis is supported by the data, you can consider it to be a valid explanation for the phenomenon you are studying. If the data refute the hypothesis, you may need to revise it or develop a new hypothesis.
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The nations of the world agreed to preserve Antarctica for
A military activity
B. scientific research
C. the storage of radioactive waste
D. the expansion of their territories
Please select the best answer from the choices provided
Answers
Answer: is B scientific research.
Explanation:
easy question but
Comets have long, indefinite life spans.
True
False
just tryna give points to people haha
Answers
Hope this helps:)
Unit 4 Cell Transport: What are three major molecules that enter the cell?
Answers
Answer:
Water, carbon dioxide, and oxygen can enter the cell.
Explanation:
They can enter the cell because they are small and can use osmosis to enter the cell.
immunofluorescence analysis of mitochondria in control and mutant cells gives you the following images. mitochondria in wildtype cells are more linear than those in mutant cells. which of the following proteins is most likely defective in this mutant?
Answers
The correct answer is A mitochondrial fission factor. It appears that the mitochondria of wildtype cells are more linear in form, whereas the mitochondria of mutant cells are more rounded or round. This implies that the protein is probably flawed in this mutation.
According to the available data, the altered shape of the mitochondria in the mutant cells points to a flaw in a protein essential for maintaining the shape of the mitochondria. A protein network called the mitochondrial reticulum, which is made up of many proteins including mitofusins and intermediate filaments, plays a crucial function in fusing the outer mitochondrial membranes and preserving the shape of mitochondria in normal cells.
The mitochondrial reticulum and other cellular pathways that control the shape of mitochondria may potentially contain other proteins that are faulty. It would be necessary to do more research, such as genetic testing or functional tests, to determine precisely which protein in the mutant cells is faulty.
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The complete question is:
Immunofluorescence analysis of mitochondria in control and mutant cells gives you the following images. Which of the following proteins is most likely defective in this mutant? Please note that mitochondria are labeled by expressing RFP-tagged TOM20, a commonly used mitochondrial marker protein; RFP: Red Fluorescent Protein
a) ATP Synthase
b) A mitochondrial fission factor
c) kinesin
d) alpha-tubulin