Describe the sliding filament model of muscle contraction. What role do acetylcholine and acetylcholinesterase play in muscle contractions

Answers

Answer 1

Answer:

It Is me the Explanation Wizard (づ。◕‿‿◕。)づ

Explanation:

Hey (☞゚∀゚)☞ It's the Explanation Wizard here for your troubles I don't wanna waste time so here is my answer+explanation that I have personally wrote for you.The first question you asked here's the a+e The sliding filament model describes the process used by muscles to contract. It is a cycle of repetitive events that causes actin and myosin myofilaments to slide over each other, contracting the sarcomere and generating tension in the muscle. second a+e for second question When the nervous system signal reaches the neuromuscular junction a chemical message is released by the motor neuron. The chemical message, a neurotransmitter called acetylcholine, binds to receptors on the outside of the muscle fiber. That starts a chemical reaction within the muscle. Explanation Wizard out


Related Questions

Which statement explains why oxygen molecules easily diffuse across a cell
membrane while DNA molecules do not?
A. Oxygen molecules are more useful to a cell than are DNA
molecules.
O B. DNA molecules contain carbon atoms, while oxygen molecules
have only oxygen atoms.
C. Oxygen molecules are very small, while DNA molecules are very
large.
D. DNA molecules have phosphate groups that the cell membrane
repels.

Answers

Answer:

C.

Oxygen molecules are very small, while DNA molecules are very large.

a permanent disease process that is characterized by destruction of the alveolar walls and distention of the alveolar sacs is a type of COPD called

Answers

Answer:

Emphysema

Explanation:

Pulmonary emphysema disease progressively destroys the fibers that promote respiration, leading to a decrease in respiratory function, emphysema being a more serious complication of any bronchopulmonary obstructive inflammation. In emphysema, the walls that separate many of the alveoli are damaged and gas exchange in the lungs decreases. This disease originates when the pulmonary alveoli are progressively destroyed and difficulty in breathing becomes greater and greater. When destroyed, a larger space is created, instead of small chambers. And this affects the length of the lungs and the amount of oxygen that reaches the blood.

A variety of mice can have either gray fur (G) or white fur (g). Which words describe the genotype of a mouse that inherits two of the alleles for white fur?

A. Homygous dominant

B. Homoygous white

C. Heteozygous Recessive

D. Heteozygous gray

Sorry about the misspelling It doesnt allow some words

Answers

Answer:

heterozygous Recessive

Answer:

I think the answer is Homygous dominant

Explanation:

Glycine is highly conserved amino acid residue in the evolution of proteins. why?

Answers

Answer:

Glycine is a highly conserved amino acid residue in the evolution of proteins. Why? Glycine has the smallest side chain of any amino acid. Its size often is critical in allowing polypeptide chains to make tight turns or to approach one another closely.

Explanation:

A student combined equal amounts of two solutions. One solution had a pH of 2 and the other had a pH of 12. Which would most likely be the resulting pH?

Answers

Answer:

This question lacks options, the options are:

A. 1

B. 3

C. 6

D. 11

The answer is C. 6

Explanation:

pH of a solution refers to the concentration of hydrogen ions in that solution. A scale is used to measure pH of a solution.

* A pH value less than (<) 7 is said to be ACIDIC. The lesser the number, the more acidic

* A pH value of exactly 7 is said to be NEUTRAL

* A pH value above (>) 7 is said to be BASIC OR ALKALINE. The higher the number, the more alkaline.

According to this question, two solutions of equal volume with pH values of 2 and 12 respectively were combined. Based on the explanation of pH scale, the solution with pH 2 is said to be very ACIDIC while the solution with pH 12 is said to be very ALKALINE.

Hence, if this two solutions are combined, a neutralization will occur which will result to a solution with close to neutral pH (7). In the above options, 6 is the closest pH value to NEUTRAL and hence, the most likely pH of the resulting solution.

Answer:

6

Explanation:

edge 2022

calculate the power developed by motor that moves an object 8m against a fornce of 10N in 4 secs

Answers

Answer:

Nos ayer as por favor

Explanation:

sitio por favor

23. The part of the seed that develops into the root system is known as the ………………………………………….​

Answers

Radicle......................

The following equation shows the correct molecules formed in the reaction, but the products are incorrect
CH, +20,- H2O + CO2
How would you correct the products?

Answers

Answer:

CH4 + O2 ----> CO2 + H2O

Explanation:

the results is carbon dioxide plus water

If a stimulus to a neuron is great enough, ________ is reached and an action potential is generated.

Answers

Answer:

If a stimulus to a neuron is great enough, ___threshold_____ is reached and an action potential is generated.

Answer:

Threshold

Explanation:

This happens when the stimulus is just strong enough to evoke a response.

Hopefully, this helped. If I am incorrect feel free to correct me. :)

A triplet of bases in a template strand of DNA is GAT. What would be the corresponding codon for mRNA?
СТА
CUA
CTU
CUA (This one is wrong)


I don't know why there are two CUAs, but if someone could please help. This is confusing for me. Please explain & no false answers. Thanks much in advance!

Answers

Answer:

CUA

Explanation:

Chances are your teacher accidentally put the same option twice and marked one of em incorrect. You infact selected the correct answer because CUA is correct.

DNA has 4 bases: ATGC (Apples on Trees = A - T, & Cows eat Grass = C-G)

RNA has 4 bases: AUGC  (RNA lacks the base T so A binds with U instead).

So for template strand GAT, the mRNA made from this codon has complimentary pairing based on RNA so G binds with C, A binds with U, and T binds with A.

A triplet of bases in a template strand of DNA is GAT, the corresponding codon for mRNA - CTU

DNA is a two-stranded molecule. Each strand is a polynucleotide composed of A (adenosine), T (thymidine), C (cytidine), and G (guanosine)  in a sequence.

Adenine always bonds with thymine, and guanine only bonds with cytosine. In RNA however, uracil is substituted for thymine instead. So, in transcription, adenine turns into thymine, and guanine turns into cytosine, and vice-versa.

Thus, A triplet of bases in a template strand of DNA is GAT, the corresponding codon for mRNA - CTU

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describe a tulip flower based on its physical characteristics

Answers

Answer:

D)The tulip plant is categorized as a monocot. The statement that best describes the flower based on its physical characteristics is "The tulip plant is categorized as a monocot." Monocots are plants the bears' flowers whose seeds regularly contain just a single embryonic leaf or cotyledon.

Explanation:

What is the natural tendency of molecules to spread evenly throughout a
room?
A. Passive transport
B. Diffusion
C. Osmosis
D. Active transport

Answers

B, diffusion, think of a diffuser (like for essential oils) and how it spreads out particles in your room

One of the major factors influencing the enrichment of reservoirs is,

Sodium

Chlorine

Nitrogen

Hydrogen

Answers

No it’s nitrogen. As it’s also a limiting factor.

Please I urgently need help with this

Answers

Answer:

A - Stigma

B - Anther

C - Filament

D -  Style

E - Ovary

F - Petal

Explanation:

The above are the correct answers of the image drawn in the attachment.

These are parts of a flower.

A - Stigma: It is the head of the pistil. It contains a sticky substance that catches pollen grains from other pollinators.

B - Anther: This is the head of the stamen. It produces pollen grain.

C - Filament: It is a long slender part of the flower. It attaches the anther to the flower.

D -  Style: It actually holds the stigma.

E - Ovary: It holds the ovule. Found at the base of the pistil.

F - Petal: It attracts pollinators to the flower.

-results from immigration
-new genes brought into a population
-variation in a population increases

What do the notes describe?

Answers

discribes how and what was effected in what happened

A rigid coating that protects and supports a cell is:
A. Phospholipid bilayer
B. Cell membrane
C. Cell wall
D. Exoskeleton

Answers

Answer:

Cell Wall

Explanation:

However, cell walls are only in plant cells.

It’s C.) Cell wall I got it right

Energy from the sun is called _______ energy.​

Answers

Answer:

Energy from the sun is called Solar Energy

Answer:

sunlight energy

Explanation:

also known as solar energy

As a research scientist, you measure the amount of ATP and NADPH used by the Calvin cycle in 3 hours. You find 9,000 molecules of ATP used, but only 6,000 molecules of NADPH. Where did the extra ATP molecules come from

Answers

Answer:

The correct answer is - Cyclic flow.

Explanation:

Cyclic electrons flow pumps proton in the lumen of thylakoid towards the concentration with the help of ATP synthase. This movement produces additional ATP.

These additional ATPs are come from cyclic electron flow, during light reaction come from cyclic electron flow, during light reaction.

Which of these is not a common feature for all life?
a. DNA is the hereditary material.
b. Living things adapt to their environment.
c. Living things breathe air.
d. Living things carry out a series of chemical
reactions known as metabolism.

Answers

Answer:

A

Not sure :-[ ^_^

............

Definition of heart rate

Answers

Answer:

refers to the number of times the heart beats within a certain time period, usually a minute.

Or

it is the speed of the heart beat measured by the number of contractions of the heart

_______
are responsible for the structures and
functions of organisms.
DONE

Answers

The right answer is cell

Large biomolecules and macromolecules known as proteins are made up of one or more extended chains of amino acid residues. Proteins are responsible for the structures and functions of organisms.

What is Protein?

Large, intricate molecules classified as proteins perform an array of essential roles in the human body. They are fundamental for the structure, operation, and control of the body's tissues and organs and perform out the majority of their work inside cells.

Many thousands of amino acids, which seem to be smaller components that make up proteins, are linked together in lengthy chains to form proteins. To form a protein, 20 different kinds of amino acids can be mixed. Each protein's precise function and characteristic 3-dimensional structure are established by its amino acid sequence.

Thus, Proteins are responsible for the structures and functions of organisms.

Learn more about Proteins, here:

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what is a dam
please tell​

Answers

A dam is a structure built across a stream or river to hold water back. Dams can be used to store water, control flooding, and generate electricity.

Answer:

a barrier constructed to hold back water and raise its level, forming a reservoir used to generate electricity or as a water supply.

The cells in this part of a plant form long, vertical tubes. What is the most
likely relationship between the structure and function of these specialized
cells?
O A. The tubes allow water and nutrients to be transported throughout
the plant.
O B. The tubes prevent potential damage to the leaves caused
used by
strong winds.
C. The tubes allow the plant to absorb sunlight for photosynthesis.
O D. The tubes prevent water loss from the leaves.

Answers

Answer:

A. The tubes allow water and nutrients to be transported throughout

the plant.

A one is correct answer

Is it a, b, c or d? Please help

Answers

Answer:

a. The hog farmer does not notice the barn smell from the working boots when he  wears them on the porch of the house.

Explanation:

The hog farmer does not notice the barn smell from the working boots when he  wears them on the porch of the house is the example of sensory adaptations. Sensory adaptation is a decrease in sensitivity to a stimulus after regular exposure to it. So the farmer can't smell his own boots due to regular exposure to the smell so we can say that it is an example of sensory adaptations..

Explain the process of Digestion in our body​

Answers

Answer:

The digestive system ingests and digests food, absorbs released nutrients, and excretes food components that are indigestible. The six activities involved in this process are ingestion, motility, mechanical digestion, chemical digestion, absorption, and defecation.

Explanation:

hope this helps

I NEED HELP ASAP PLZZZZZZZZZZZZZZZZ

Answers

Answer:

B. Bald eagles are hunted until near extinction, population recovers

Explanation:

A bottleneck effect can arise when the population of a species is drastically reduced by an occurrence. Human activities plays a major role in regard to creating a bottleneck effect in our present day. Human activities such as overhunting result into bottleneck effect. When overhunting reduces the population of a particular species, the few individuals left would have a reduced genetic variation which is not representative of the original population. The few individuals left further reproduces individuals of their kind carrying a genetic composition that is different from the original gene composition of the old population.

The case of the hunting of bald eagles until near extinction before they begin to recover is a perfect case of the bottleneck effect. Only a small proportion of the eagles original population survives. Generic variation reduces. The genetic variation in the new population of the bald eagles will be different from that of the original population.

Which of the following is NOT a type of biological weathering?
A. Carbon dioxide dissolving into clouds and forming acid rain.
B. Animals digging burrows.
C. Lichen absorbing minerals from stone.
D. Plants growing roots into concrete.
Hurry!!

Answers

the answer is A. Carbon dioxide dissolving into clouds and forming acid rain

Which best defines matter?
A. All the living things on the planet
B. All solid objects that can be seen
C. Anything in the atmosphere
OD. Anything that takes up space and has mass
SUBM

Answers

Answer:

Anything that takes up space and mass

Explanation:

In science matter takes up space either by a solid, liquid, gas, plasma etc. And it all has mass no matter how small or how much it has.

vì sao cơ thể không hấp thu chất dinh dưỡng cách khắc phục

Answers

Answer:

What?

Explanation:

I dont understand theanguage

In your own words, what is the definition for the word Interphase?

Answers

Answer:

is the portion of the cell cycle that is not accompanied by gross changes under a microscope

Answer:

the resting phase between successive mitotic divisions of a cell

Explanation:

the portion of the cell cycle that is not accomplished by gross changes under the microscope

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