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

Cationic detergents are surface active agents, also known as ______, which damage bacteria by binding bacterial surface proteins and disrupting ______.

Answers

Surfactants; cell membrane

Describe how pollution can cause acid rain, and how acid rain affects the ecosystems of surrounding areas?

Answers

Pollution specifically air pollution can cause acid. Gases such as sulphur (IV) oxide and Nitrogen (IV) oxide when they are released into the atmosphere and comes into contact with precipitation, that is rain water causes acid rain. Sulphurous acid and Nitric acid is formed thus the rain falls in acidic form.

Acid rain when it falls on the leaves of the flora (plants) causes removal of the green colouring matter (chlorophyll) thus making plants to be deficient of food. Food in plants is made my the process of photosynthesis, removal of chlorophyll in plants kills them due to lack of food.

Also when acid rain finds it's way into the water bodies through surface runoff, aquatic animals such as fishes die due to lack of favourable environment and oxygen deficiency in water. Acidity in the soil also kills important decomposers therefore soil aeration is altered.

acid rain can affect the surrounding areas by ruining its ecosystem

When you touch an object that is very hot you quickly pull your hand back. What is the correct pathway of nerve impulses for this behavior?
A. Heat receptors in the hand, sensory neurons, brain, motor neurons, hand muscles.
B. Heat receptors in the hand, motor neurons, hand muscles, sensory neurons, brain.
C. Hand muscles, motor neurons, brain, sensory neurons, heat receptors in hand.
D. Brain, sensory neurons, heat receptors in hand, motor neurons, hand muscles.

Answers

A heat receptor>sensory neuron>brain>motor neuron>>hand muscles

Answer:

a

Explanation:

The DNA of a prokaryote is arranged in a single coiled chromosome located in a region called the ____________ . Some prokaryotes carry genes on extrachromosomal pieces of circular DNA called ____________ .

Answers

Answer:

1. Nucleoid

2. Plasmid

Explanation:

Prokaryotes are groups of organisms characterized by the lack of a membrane-bound nucleus in their cell. Due to this, the genetic material (DNA) of prokaryotes are found naked i.e. not housed. The DNA of a prokaryote is arranged in a single coiled chromosome located in a region of the cell called NUCLEOID.

However, some prokaryotes e.g. bacteria carry genes on extrachromosomal pieces of circular DNA called PLASMID. Plasmids carry certain genes like antibiotic resistance genes.

PLEASEE NEED HELP ASP
Match each organelle with the main life function(s) it helps the cell perform. Each basic function of life can be used more
than once, and many organelles will have more than one possible answer. Choose one answer only,

Organelle list - nucleus, mitochondria, golgi apparatus, endoplasmic reticulum, ribosomes, lysosomes, vacuoles, cell membrane, chloroplast, cell wall


The answer could either be 1. reproduction 2. interaction with the environment 3. growth 4. uses energy 5. waste production (each function can be used more than once)

Answers

Answer:

The correct answer is -

nucleus - reproduction, mitochondria- reproduction, golgi apparatus - waste production, endoplasmic reticulum - growth, ribosomes - growth, lysosomes- waste production, vacuoles - growth, cell membrane - interaction with the environment, chloroplast - uses energy, cell wall - interaction with the environment

Explanation:

A Cell has various organelles with more than one generic function such as the nucleus not just play role in cell reproduction but also plays role in regulating other organelle and cell growth by transcription. Mitochondria produces and provides energy for many functions such as growth, reproduction and substance transport.

Golgi apparatus package proteins and wastes to transfer them out of the cell. The ndoplasmic reticulum modifies the protein produced by ribosomes and helps in growth of the cell. Lysosomes digest waste and cell debris by lysosomal vesicles. Cell membrane and cell wall interact with outer environement.

The water cycle is a closed system, meaning no water enters from beyond the system nor leaves the
system. What does that say about the importance of keeping water on Earth free from pollution?

Answers

Answer:

there are no possible changes adaptations

Explanation:

what i mean by that is if a substantial amount of pollution enters the water cycle its going to be nearly impossible for it to get out

If water present on earth is polluted anywhere in the cycle, it starts affecting the system of water and percolation as well as plants become limited that what they will do in order to clean the water. It is possible that if ground is polluted than water will also get polluted. It means that the water present on earth is same the water present from the beginning and will continue to be the same water that is available.

What is groundwater?

Groundwater has been defined as water present in the underground water below the soil as well as in the cracks of the earth. The percentage of freshwater in the world would be 30%. There are mainly three types of groundwater and these are hand-dug wells, as well assprings, and drilled boreholes.

The water stored under the ground has obtained from the rain and stored in the ground so that it can be used later. Ground water has very clean and fit for drinking and the reason could be the soil present on top and work as filter and the groundwater is free from all microorganisms.

Therefore, If water present on earth is polluted anywhere in the cycle, it starts affecting the system of water and percolation as well as plants become limited that what they will do in order to clean the water. It is possible that if ground is polluted than water will also get polluted. It means that the water present on earth is same the water present from the beginning and will continue to be the same water that is available.

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Identify the error in the following statement: “Photosynthesis is a chemical reaction that takes place in the chloroplasts of green plant cells, where chemical energy is used to convert carbon dioxide and water into glucose and oxygen.”

A. “chloroplasts” should be “mitochondria”
B. “water” and “oxygen” should be switched
C. “chemical” should be “light”
D. No errors

Answers

Answer:

C light energy instead of chemical energy

Explanation:

Photosynthesis does take place in the chloroplasts (repirarion takes place in the mitochondria)

The equation for photosynthesis is Carbon dioxide + water --> glucose + oxygen (so that statement is correct)

Answer:

D. No errors

Explanation:

Drag the substances into the correct category
water
Reactants Products

oxygen
energy
carbon dioxide
glucose

Answers

Reactants: Carbon Dioxide, Water, Energy
Products: Oxygen, Glucose

Answer: 100% on edge

Reactants:: glucose and oxygen

Products:: carbon dioxide, energy, and water

Bjr pouvez vous m'aider

Answers

Answer:

no entiendo este idioma soy nuevo y hablo español

Which base does Adenine pair with in RNA?
A. Uracil
B. Guanine
C. Thymine
D. Cytosine

Answers

Answer:

A. Uracil would be the answer.

What is the main source of nutrients for autotrophs?

Answers

Answer:

Most autotrophs use a process called photosynthesis to make their food. In photosynthesis, autotrophs use energy from the sun to convert water from the soil and carbon dioxide from the air into a nutrient called glucose.

Help plzz!! I’ll mark you as brainliest
What is the definition of specific heat capacity?
O A. The amount of heat required to break the chemical bonds in 1 g of
a substance
B. The amount of heat required to form 1 g of a substance from its
elements
C. The amount of heat required for 1 g of a substance to undergo a
phase change
D. The amount of heat required to raise the temperature of 1 g of a
substance by 1°C

Answers

Option D is the correct option..

D. The amount of heat required to raise the temperature of 1 g of a

substance by 1°C

Which of the following is NOT part of the circulatory system?
lungs
heart
arteries
blood​

Answers

I’m not 100% sure about this one but I believe that it is lungs, seeing that the rest is blood you can just like pick the most obvious one out

what a meteor is called before it enters Earth’s atmosphere

Answers

Answer:

A meteor, before entering earth's atmosphere is known as a meteoroid

the growth of a fungal hyphae tip is?

Answers

Fungal hyphae extend continuously at their extreme tips, where enzymes are released into the environment and where new wall materials are synthesised. ... So, in effect, a fungal hypha is a continuously moving mass of protoplasm in a continuously extending tube.

Mammals are a large group of animals that includes humans, apes, dolphins, bears, bats, cats, and much more. Which statement can be made about this information? All mammals use echolocation to find food. Some mammals use echolocation to avoid obstacles. All mammals use walking as their primary means of transportation. Some mammals need to find food to survive.

Answers

Answer: B

Explanation:

Just did the test

The statement that can be made about the information is: "Some mammals need to find food to survive."

What are Mammals?

Mammals are a diverse group of animals that are found all over the world and come in many different shapes, sizes, and types.

All mammals share certain key characteristics, including the fact that they are warm-blooded, have hair or fur, and feed their young with milk produced by their mammary glands.

While the information given in the first sentence provides a list of mammals, it does not provide any information about their specific behaviors or characteristics, such as the use of echolocation or means of transportation.

However, the statement that "some mammals need to find food to survive" is true for all mammals, as food is a basic necessity for the survival of all members of this animal group.

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In 1980, scientists suggested that the great mass extinction of 65 million years ago (which ended the reign of dinosaurs) may have been caused by a large impact from space. What discovery gives a big boost to this idea

Answers

Answer: the discovery of a buried crater (about 200 km across) near Chicxulub, Mexico

The discovery of a buried crater (about 200 km across) near Chicxulub, Mexico.

What is extinction?

Extinction is defined as the disappearance of an organism or a group of organisms as a result of environmental factors or changes in the members' evolutionary processes.

It can also be defined as an evolutionary process that causes a species or population to go extinct.

When there are no longer any living members of a certain animal or plant species anywhere in the globe, the species has become extinct.

Generally speaking, species disappear for the following reasons:

Genetic and demographic phenomena.Habitat destruction in the wild.Species introduction that are invasive.Global warmingHunting and illicit trade.

Thus the discovery of a buried crater (about 200 km across) near Chicxulub, Mexico.

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In 40 words or fewer, why do you think a 0.1% difference in DNA can
be useful to society?

(The answer is this ⬇️)


The 0.1% difference in DNA
can be used to identify
someone who has
committed a crime or free
someone who hasn't, to determine someone's family
heritage, and to help give a
person more precise
medical treatments.

To anyone who needs it

Answers

Answer:

The 0.1% difference in DNA

can be used to identify

someone who has

committed a crime or free

someone who hasn't, to determine someone's family

heritage, and to help give a

person more precise

medical treatments.

Explanation:

Easy points thxx

What are the masses of gray matter that lie deep within the cerebral hemispheres and that are responsible for regulating intensity and precision of voluntary movement

Answers

Answer:

Cerebral cortex.

Explanation:

The masses of gray matter that lie deep within the cerebral hemispheres is called cerebral cortex. The cerebral cortex is responsible for many brain functions such as sensation, perception, memory, association, thought, and voluntary physical action. Damage occur to cerebral cortex can leads to many cognitive, sensory, and emotional difficulties in the body. It is also responsible for regulating intensity and precision of voluntary movement.

If an area has very little permeability, such as a city where the ground is mostly concrete, what will happen to most of the rainwater?
A. It will become groundwater.
OB. It will be pumped into underground reservoirs by large machines.
C. It will become runoff.
D. The type of surface it falls on does not affect rainwater.

Answers

Answer:

C

Explanation:

The water won't be able to penetrate the ground so can't become ground water and reservoirs are usually above ground not underground so it will become run off.

Permeability is the ability of the substances to get diffused easily across the surface. The concrete ground results in the rainwater becoming runoff. Thus, option C is correct.

What is permeability?

Permeability is the capacity of the water or any fluid to pass and diffuse across the substances or any membrane to get from the higher to lower concentration.

The concrete ground and roads are not permeable and do not allow water to pass through the material and effects the collection of the rainwater through infiltration.

The rainwater is unable to filter into the groundwater and becomes runoff. This runoff gets accumulated on the roads and can even lead to floods and drain blockages.

Therefore, option C. the less permeable roads cause rainwater to become runoff.

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urine is made of _________​

Answers

Answer:

Answer is A

Explanation:

Urea consists of carbon, nitrogen and oxygen. You can find it in urine, sweat, blood and milk in mammals. In its most concentrated form, it is urine. Urea is a crystalline compound, and the nitrogen content is always at least 46 percent when dry.

Question in the picture

Answers

Answer:

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which type of hormone diffuses across the plasma membrane and binds to receptors in the cytoplasm module 16.4c

Answers

Answer:

Steroid hormones.

Explanation:

Steroid hormones is a type of hormones that diffuses across the plasma membrane and binds to the receptors present in the cytoplasm. The hormones are released from the carrier protein and diffuse inside the cell across the lipid bilayer of the plasma membrane of the cells. The steroid hormones pass through the plasma membrane of a target cell and attached to the intracellular receptors located in the cytoplasm or in the nucleus.

why is DNA a useful form of evidence for developing a phylogenetic tree?

a) DNA never changes
b) DNA is the newest thing in science
c) DNA is passed from generation to generation ​

Answers

Answer:

DNA is useful for a phylogenetic tree because DNA is passed from generation to generation.

the answer;

should be C

HAVE A NİCE DAY

Explanation:

greeetings from Turkey ツ

C , dna is passed generation to generation!

Explain the evolution of altruism.

Answers

Answer:

Altruistic behavior, such as sterile worker ants caring for the offspring of their queen, evolves only between related individuals through what is known as kin selection — or so many evolutionary biologists have thought since the 1960s.

Eukaryotes have three nuclear RNA polymerases. The primary function of RNA polymerase II is transcription of _____.

Answers

Answer: the answer is  protein-coding genes

(if this is right mark brainliest :))

Eukaryotes have three nuclear RNA polymerases. The primary function of RNA polymerase II is transcription of protein coding genes

what are the function of RNA   polymerase  ?

there are Three different types of RNA polymerases (RNAPs), which transcribe eukaryotic genes, such as RRNA genes are transcribed by RNA polymerase I.

mRNA, miRNA, snRNA, and snoRNA genes are mainly transcribed by RNA polymerase II, while tRNA and 5S rRNA genes are transcribed by RNA polymerase III.

short RNAs as well as the protein coding genes  are both transcribed by RNA polymerase II.

A Separate type of RNA polymerases are present in chloroplasts and mitochondria, where they specifically transcribe the DNAs of those organelles.

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Why does the thermosphere increase in temperature as altitude increases?

Answers

Answer:

The thermosphere is the outer layer of the Earth's atmosphere, extending from about 53 miles to more than 370 miles above the surface. The temperature increases rapidly in this layer due to the absorption of huge amounts of incoming high energy solar radiation by atoms of nitrogen and oxygen.

Explanation:

where can we find most of the gases ? to the left or right section ? explain .​

Answers

Answer:
Nitrogen and oxygen account for 99 percent of the gases in dry air, with argon, carbon dioxide, helium, neon, and other gases making up minute portions.

Explanation:
:)

Does anybody know a nice place to watch the fireworks tomorrow around the San Francisco area??

Answers

yes,kumain kanaba ÚwÙ

Answer:

In the open

Explanation:

Or next to an attraction nearby

Which food contains mostly polsaccharides

Answers

Answer:

food with carbohydrates

Explanation:

they comprises of two or more mono saccharides

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Amy throws a softball through the air. What are the different forces acting on the ball while its in the air?The softball experiences force as a result of Amys throw. As the ball moves, it experiences from the air it passes through. It also experiences a downward pull because of . Henri bought a swim suit at a cost of $8. Which statements are true regarding the cost of the suit? Present perfect tense for Ryan has six cats and four dogs In triangle ABC , segment AB is congruent to segment CB . Which angles are congruent? World history ap*xWhich topic is often used as a theme for studying history since World War 1?A. Unresolved global conflictsB. Social and cultural isolation C. European imperialism and colonialism D. Declining interest in human rights please help i guess on a he said "when will they come?" The difference of twice a number and five is three.Find the number.Translate the world problem to an equation.Which steps describe how to solve the equation? Select the correct answer.What is the tone of the second paragraph?From inaugural address When your vehicle turns a corner, the tracks made by the rear tires are always: a) Outside of those made by your front tires b) Inside of those made by your front tires c) On top of those made by your front tires d) None are correct the prime mover of inspiration is the blank during normal quiet breathing expiration is a passive process as this muscle relaxes into its original dome shape. provide conditions when expiration becomes an active process or forced. explain What are the benefits of giving a persuasive speech rather than publishing an article? Can I get the answer for those A major component of gasoline is octane when octane is burned in air it chemically reacts with oxygen to produce carbon dioxide and water what mass of carbon dioxide is produced by the reaction of oxygen In the image below, what molecule is being released by cellular respirationand used in photosynthesis?A. 02B. CO2C. H20D. C6H1206 What does the second part of declaration contain Suppose that you and a friend are playing cards and you decide to make a friendly wager. The bet is that you will draw two cards without replacement from a standard deck. If both cards are diamonds, your friend will pay you $296. Otherwise, you have to pay your friend $17.What is the expected value of your bet? What academic subset of oceanography studies seafloor features and the processes that form them? A pair of linear equations is showny=-3x5y=x+2Which of the following statements best explains the steps to solve the pair of equations graphically?on a graph, find the point of intersection stwo lines; the first line has y-intercept - 5 and slope - -3, and the second line has y-intercept = 2 and slope - 1.On a graph, find the point of intersection of two lines, the first line has y-intercept -3 and slope - 5, and the second line has y-intercept - 1 and slope - 2.On a graph, find the point of intersection of two lines, the first line has y-intercept -- and slope - 3, and the second line has y-intercept = -2 and slope --1On a graph, find the point of intersection of two lines; the first line has y-intercept = 3 and slope -5, and the second line has y-intercept -1 and slope --2. Take -4 + 3a 2 from 7a - a 2.