When a nerve impulse reaches the end of an axon of a neuromuscular junction, calcium flows ______ the synaptic knob.
Answers
Answer: flows INTO the synaptic knob.
When a nerve impulse reaches the end of an axon of a neuromuscular junction, calcium flows into the synaptic knob.
In a neuromuscular junction, there are three parts. They are the presynaptic terminal or synaptic knob, the synaptic cleft and the postsynaptic terminal. The calcium ions will work in the synaptic knob when the nerve impulse arrives.
Once that the nerve impulse reaches the end of the axon, it will affect the presynaptic terminal. In there, it causes the opening of voltage-gated calcium channels. As a result:
Calcium flows into the presynaptic terminal.The calcium makes the vesicles (with neurotransmitters) descend and fuse with the terminal membrane to release the neurotransmitters to the synaptic cleft.In conclusion, the nerve impulse causes the opening of voltage-gated calcium channels, and calcium flows into the synaptic knob.
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Related Questions
Cyanidin is a compound that is sensitive to pH. Cyanidin is found in plants such as hydrangeas, cornflowers, and the vegetable rhubarb. Cornflowers are blue because the cornflowers sap is basic and cyanidin turns blue in the presence of bases. Rhubarb contains an acid called oxalic acid. This affects the cyanidin and causes the red color found in rhubarb. Other plants that contain cyanidin are cherries, raspberries, and strawberries. What does the above information infer about cherries, raspberries, and strawberries?
Answers
Answer:
their colours are basically on the acidic and basic content of their cell sap in reaction with the cyanidin
a critical event in the death of a cell is caused by
Answers
Answer:Apoptosis and autophagy are both forms of programmed cell death. Necrosis is the death of a cell caused by external factors such as trauma or infection and occurs in several different forms.
Explanation:
in which phase of the cell cycle do cells check to determine whether the dna is fully and correctly replicated?
Answers
Answer:
at the end of G2
Explanation:
in the presence of a regulatory protein the lac operon is _____.
Answers
Answer:
The correct answer is : B. not transcribed
Explanation:
The regulatory protein of the lac operon is a repressor. A operon is a stretch of DNA consisting of an operator, a promoter, and genes for a related set of proteins, usually making up an entire metabolic pathway. The genes of an operon are sequentially ordered after the promoter.
Does human intervention affect small-scale ecosystems differently than large-scale ecosystems?
two pieces of information along with their sources
Answers
Answer: No
According to BBC, Human activities such as harvesting plants and hunting animals can unbalance the flows and cycles within those [SMALL SCALE ECOSYSTEMS ]ecosystems. Tree-felling may lead to soil erosion and a loss of habitat. Lack of shade and moisture in the soil can result in desertification.
According to National Geographic, Humans impact the physical environment in many ways: overpopulation, pollution, burning fossil fuels, and deforestation. Changes like these have triggered climate change, soil erosion, poor air quality, and undrinkable water.
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You live in Florida, and you have decided to prepare your home for hurricane season. Which of the following actions would least help you achieve your goal?
A) purchasing a battery-powered cell phone charger
B) storing several gallons of water in closed, plastic containers
C) replacing your wooden front door with a door made of glass
D) filling your pantry with canned goods and other non-perishable food items
Answers
Answer:
D) filling your pantry with canned goods and other non-perishable food items
1. Describe how chemical changes
are
different from physical changes.
Answers
Answer:
Physical changes only change the appearance of a substance, not its chemical composition. Chemical changes cause a substance to change into an entirely substance with a new chemical formula.
Explanation:
Answer:
In a physical change the appearance or form of the matter changes but the kind of matter in the substance does not. In a chemical change, the kind of matter changes, and at least one new substance with new properties is formed.
Explanation:
Physical changes are limited to changes that result in a difference in the display without changing the composition.
hope that helped!
what molecule that is created during photosynthesis is stored by the plant as energy for later use?
Answers
Glucose.
................
What is the term for the congenital absence of the urinary bladder?
Answers
Answer:
Urinary bladder agenesis
Explanation:
Bladder agenesis may be the result of secondary atrophy of the urogenital sinus, perhaps owing to the lack of distension with urine caused by failure of incorporation of the mesonephric ducts and ureters to develop into the trigone.
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Why do the hydrogen ions and the hydroxide ions form bonds to make macromolecules?
Pick One of the Following:
A. They both have protons that attract to each other.
B. They each have an electrical charge that attracts to each other.
C. They both have electrons that attract to each other.
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Answer:
A i think
Explanation:
which statement is not true about electrical synapses?
Answers
the auditory ossicles transmit vibrations from the
Answers
Answer:
tympanic membrane across the middle ear.
Explanation:
The tympanic membrane across the middle ear to the oval window of the inner ear.
PLEASE HELP ME IM TIMED!
Answers
Answer:
D
Explanation:
Actually fat is the best source of energy, since it is time consuming to break down a molecule of fat, carbohydrate is now used as an alternative to that since the molecules are broken down quicker.
The virus best known for causing mononucleosis, which is also suspected of contributing to Hodgkin's disease, is called
Answers
What is the job of the enamel on your teeth?
Answers
Explanation:
Enamel helps protect your teeth from chewing, biting, grinding, crunching, and so on. Enamel also serves to sort of protect the teeth from potentially harmful temperatures and chemicals.
. Tay-Sachs disease is a human genetic condition where cells build up with large, complex, and undigested lipids. Which organelle must be malfunctioning (not working) in this condition
Answers
Answer:
lysosomes
Explanation:
missing lysosomal enzyme
_____ mimic the process of natural evolution to generate solutions to optimization and search problems.
Answers
Search algorithms are used to generate solutions to optimization and search problems.
Search algorithms that mimic the process of natural evolution. Search algorithms can be used to generate solutions to optimization and search problems using techniques such as mutation, selection, crossover, and chromosome.
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Would a plant be able to survive if the ground tissue was damaged? Explain your answer.
Answers
Given what we know, we can confirm that with damaged ground tissue, a plant will most likely not be able to survive.
What we know about ground tissues in plants.The ground tissue forms an abundant part of all plant tissues. This tissue includes all plant tissue that is neither vascular nor dermal.This means that ground tissue covers a wide variety of functions. Two primary and important functions are the storage of sugar and water.Therefore, given the vital role of this tissue in plants and its function in storing "food" and water, we can confidently say that a plant with damaged ground tissue will not be able to survive for long.
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Answer:
No, it would not because...
Explanation:
A plant without ground tissue would not be able to survive. The ground tissue serves all types of functions, including photosynthesis, storage, and support. Without any of these functions, a plant can’t grow nor get the nutrient it needs to survive.
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Breathing is also known as which of the following?
*Ventilation
Internal respiration
External respiration
Gas exchange
Answers
Answer:
a. Ventilation
Explanation: post protected
Biology A Semester Exam
4 of 284 of 28 Items
You find a blog post written by a student on a university website about photosynthesis. Assess the reliability of this source.(1 point)
It may be reliable because the blog has been featured on a popular website.
It may be reliable because they cited multiple high-quality studies from scientific journals.
It may be reliable because other students verify the information in the blog.
It may be reliable because they cited other student blogs.
Answers
A student's post on photosynthesis can be reliable because he cited multiple high-quality studies from scientific journals.
When we research to show that a hypothesis or idea is true, we need to give it reliable support so that people who read our research trust the conclusions of our research, and it is considered as true knowledge.
To give reliable support to an investigation, it is necessary to resort to feasible arguments or true knowledge developed by researchers and specialists. For this, we must consult sources of reliable information.
Examples of reliable sources of information are:
International scientific journalsUniversity researchProven scientific evidenceSpecialized booksAccording to the above, what the student must do so that his publication is reliable for other students is to cite reliable sources so that the knowledge he is sharing is reliable.
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Answer:
IT may be reliable because they cited multiple high-quality studies from scincetific journals
Explanation:
Well, we know that this person knows their stuff and has been helpfull to others in the past!
let's give an example of a man, Jorge who has a reputation for helping others and donating to charity.
Tomorrow you're leaving for a week on a business trip and you need someone to watch your house, that is one truthful and is trusting.
We have Bob down the street that is a bloger and has many followers.
The mailman, Carson that everyone likes.
someone random online will watch the house.
Are you going to trust Jorge- the person who helps everyone
Bob- the bloger
Carson-the mailman or,
Someone random- watches houses, 30 bucks a day
YOUR GONNA TRUST JORGE!! Because he is the reliable and truthful man!
:> hope that helped you
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Which chromosome pair shows gender?
1
15
22
23
Answers
Answer:
23
Explanation:
Please help!
Peter is pushing the rock but the rock is not moving. Choose the statement that describes the force(s) being applied in the image.
a boy pushing a rock, but the rock is not moving
The force of the push is an unbalanced force.
The forces acting on the rock are balanced.
A weaker force of pushing would result in unbalanced forces.
The force of gravity is pulling the rock upwards.
Answers
Explanation: Basically since the object is not moving we can consider this system to have a net force of zero (where are forces are balanced). In this problem, the force applied equals the static friction pushing back, and the force of gravity equals the normal force exerted by the ground on the rock.
Answer:2b
Explanation:
What part of a plant cell responds to turgor pressure? *
Answers
Answer:
Cell wall. The plant cell wall accounts for the turgidity and the rigidity in plants. The cell wall protects the plant cell from bursting due to the influx of water. Rather than bursting, the cell is able to withstand the osmotic pressure exerted by the water molecules.
what gives animal cells their shape and structure?
Answers
Answer: Animal cell's shape and structure are determined by the cytoskeleton.
What is the cytoskeleton?
The cytoskeleton is present in all animal cells, prokaryotic (bacterial) cells contain a very rudimentary version of it, while plant cells do not have one at all. It consists of several types of large molecules that provide physical support to the cell as well as internal transport along its length for organelles like endoplasmic reticulum (ER), mitochondria, vacuoles, etc. The three main components are microtubules, intermediate filaments and microfilaments which give rise to different structures within the cell. Microtubules are long cylindrical tubes made up of two protein subunits (alpha and beta tubulin) that form a hollow tube. These are the main components of the cytoskeleton, they provide support to the cell while also having transport capacity for organelles like endoplasmic reticulum (ER), mitochondria, vacuoles, etc. Microtubules are dynamic structures which means their state is constantly changing i.e., growing, shrinking or moving around depending on requirements of the cell.
Help me please!!! Which hot spot is it? Left, 1st middle, 2nd middle, or Right?
Answers
Answer:
Left side
Explanation:
The mitochondria
The Krebs cycle or citric acid processes in the mitochondrial matrix yield a substance called NADH. Adenosine triphosphate is then produced from NADH by enzymes included into the mitochondrial inner membrane (ATP).
What is the main role of mitochondria in nutrient energy?Organelles, or “tiny organs,” are what mitochondria are. They generate ATP (adenosine triphosphate), a chemical that is used by the cell to power the various tasks it must perform, as a source of energy.
The creation of cellular ATP by oxidative phosphorylation is undoubtedly one of the activities of mitochondria, but they also play significant roles in ion homeostasis.
Various metabolic pathways, apoptosis and programmed cell death, as well as the production and consumption of ROS.
Therefore, mitochondria transform nutrient material into an energy form that is used by the cell.
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which evidence best supports the claim that mutations are a source of inheritable genetic variation
Answers
Answer:
Mutations affect protein synthesis which impacts the way traits are expressed
Answer:
Genetic Mutations Produce Variation Quick Check
1. mutations affect protein...
2. substitution
3. substitution
4. food availability
5. two nucleotides are deleted
Explanation:
Did quick check
can yall see if im right
Answers
Answer:
Yes you are correct
Explanation:
What is the condition in a male in which the prostate gland enlarges and compresses the urethra, causing bladder, kidney, and urinary problems?
Answers
Answer:
b. Prostatic hyperplasia
Explanation:is correct
(ii) Two grey mice, when mated, produced a total of 8 white, 9 black and 17 grey offspring. Student A suggested that grey coat colour was dominant in the mice. Student B strongly disagreed Which student is right? Explain your answer using appropriate symbols (4 marks)
Answers
why is Ten dollars and Ice not a kinetic energy ?
Answers
Answer: They aren't kinetic energy
Explanation: They are not because it is either motionless or at rest.