Which process must occur for a muscle to be able to relax?


A. A nerve must initiate an action potential in the muscle fiber.

B. The amount of ATP in the neuromuscular junction must increase.

C. The concentration of calcium in the myofibril must decrease.

D. Myosin and actin must attach to each other.


Answer: C. The concentration of calcium in the myofibril must decrease.


I hope this helps.

Answers

Answer 1

Answer:

c

Explanation:

Relaxation occurs when stimulation of the nerve stops. Calcium is then pumped back into the sarcoplasmic reticulum breaking the link between actin and myosin. Actin and myosin return to their unbound state causing the muscle to relax.


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circulating hormones are mostly taken up and degraded by the _________ and the __________.

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Answer:

where the picture

Explanation:

plss asan po acc picture

of the 30,000,000 species on earth, how many are lost each hour?

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Hi there!

Every hour, 3 species disappear
The cause: Human activity
Facts: We have already lost 902 different species.

Hope that helps!

The question is in the image below:

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Answer:

I think that the answer is true

Explain a trend or pattern you observe in the graph?

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Answer:

The heavier the hummingbird, the fewer times its wing will beat per second.

Explanation:

There is a negative slope in a graph respective to the components of the x and y axis. Therefore, heavier the hummingbird -> less beats per second.

Astrologers relate the location of the stars and planets to events in human lives. Many years ago,people classified astrology as a science. Why do modern scientists consider astrology to be a pseudoscience?

Answers

Answer:

C.

Explanation:

yes, astrology doesn't offer conclusive proof of its claims. astrologers predict the future with the location of planets and stars but they don't have a concrete theory that the location of a particular planet has an impact on human life. they believe in something called universal energy.

But I believe in my god.

What is the difference between a prokaryotic and eukaryotic cell?

Answers

Answer:

one has a nucleus and one doesnt

Explanation:

prokaryotic-smaller, no nucleus to hold genetic info, most have flagellum

eukaryotic-bigger, has nucleus to its genetic info, no flagellum in eukaryotes

what is a difference between a waxing crescent and a waning gibbous?

Answers

Answer:

Waxing means it's getting bigger while waning means it's getting smaller.

Describe the relationship between DNA,
chromosomes, and genes.
RETRY

Answers

Answer:

In the nucleus of each cell, the DNA molecule is packaged into thread-like structures called chromosomes. Each chromosome is made up of DNA tightly coiled many times around proteins called histones that support its structure.

Explanation:

so the relationship between.

Answer:   Chromosomes > DNA > Genes

Chromosomes are thread-like structures of DNA coiled around proteins. Genes are specific portions of DNA that code for the production of proteins that are used and/or expressed by a body.

2. How did dark matter affect the development of structures in the early universe?(1 point)
It cooled pockets of gas to form nebulae.
It became part of black holes.
It seeded the development of quasars.
It seeded the development of galaxies.

Answers

Answer:it seeded the development of galaxies

Explanation:

Dark matter affected the development of structures in the early universe as it seeded the development of galaxies.

Dark matter is simply refered to as a glue that bounds the Universe together. they are also dark matter halos are now stated to be the sites where galaxies were born.

The universe as a whole ks made up of helium and hydrogen, dark matter was very essential in giving of the gravitational force needed in the gathering of elements together to form stars.

Conclusively we can therefore say that Dark matter is the sit that holds the existence of galaxies.

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what is the canadian take on the bloody mary called?

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The answer is bloody Caesar cocktail.

Use the image below:
What is happening in this model? (just the answer, no need to restate)

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Answer:

In the middle of the model is the stem cell, which can turn into the other cells shown.

Explanation:

one reason that identical twins might show slight differences at birth is

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Answer:

genetic variation and traits

how did new evidence presented by other scientist's claims change the modern cell theroy

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Explanation:

Hope this helps. Goodluck.

red-green colorblindeness occurs more commonly in men than it does in women. using this information, which chromosome do you suppose the gene for red-green colorblindness resides on, and is the trait dominant or recessive?

Answers

Answer:

Usually the Y chromosome. It is recessive because if one Y chromosone is mutated with red-green colorblindness and the X is not, the child will have colorblindness. But, if one X chromosome has the mutation and the other X does not, they will cancel out, meaning the child will not have colorblindness.

A pH of 7, [H+]=[OH] below pH 7, which of these is greater_____. Bases have a pH that is ______ than 7

Answers

Answer:

below pH 7 H+ is greater because hydrogen ions are produced only by acids in an aqueous solution and acids have a pH below 7

bases have a pH that is greater than 7.

Answer this please
fastest answer gets brainliest!!

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Cellular respiration is a metabolic pathway that breaks down glucose and produces ATP. The stages of cellular respiration include glycolysis, pyruvate oxidation, the citric acid or Krebs cycle, and oxidative phosphorylation.

   

this is in my own words give me brainliest

Answer:

Cellular respiration is a metabolic pathway that breaks down glucose and produces ATP. The stages of cellular respiration include glycolysis, pyruvate oxidation, the citric acid or Krebs cycle, and oxidative phosphorylation.

 

this is in my own words give me brainliest lol im fastest

What is a sister chromatid?
1. a full-sized singular chromosome
2. an irregularly divided chromosomes
3. a complete duplicated chromosome
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Answers

Answer:

4. half of a duplicated chromosome

Explanation:

in mitosis,when a cell splits its called a sister chromatid

How do your sensory organs help you to maintain homeostasis?

Answers

Answer:

Hi

Explanation:

“Sensory cues influence homeostasis by modulating hormone secretion. ... In step 1, sensory cues change the activity of sensory neurons. In step 2, the sensory information is processed and transmitted, which leads to step 3, where neuro- or nonneuronal endocrine cells secrete hormones required in maintaining homeostasis.”

In the Bird Beak Gizmo, how did the bird beak depth change in drought conditions?
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O Beaks got shorter beacuse the birds had to scrape more to find seeds.
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Answers

Answer:

I think it would be #3, Beaks got longer because the only birds that survived had larger beaks that could crack the hard seeds

Explanation:

In years of extreme drought, the small, delicate seeds get eaten up quickly, leaving behind only the largest, toughest seeds.

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Answers

Answer:The answer is b. Pioneer species

Step-by-step explanation; The first species to colonize an area after a major disturbance are called pioneer species; they help to form the new environment. Secondary succession occurs after a disturbance such as a forest fire, where there is still some organic matter to allow new plants to grow.

in the figure, which number represents dna synthesis?

Answers

The number that represents DNA synthesis in the figure would be II.

DNA synthesis happens at the S phase in the interphase of the cell cycle, just after the G1 or cell growth phase and before the G2 or protein synthesis phase.

During the S phase, the amount of DNA in the cell doubles as replication of DNA takes place. However, the number of chromosomes remains constant.

The doubling of the amount of DNA is responsible for the sharp rise in the line that represents the amount of DNA in the figure. Thus, the region of a steep rise in the amount of DNA would represent the DNA synthesis phase.

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identify the ways in which the anterior pituitary differs from the posterior pituitary. check all that apply.

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Answer:

happy estoy feliz ahausushhywhwjijgybhoon

please help, only answer if you know​

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I’m pretty sure the answer is convection currents :)

briefly explain natural selection​

Answers

Answer:

Explanation:

Natural selection is the process through which populations of living organisms adapt and change. Individuals in a population are naturally variable, meaning that they are all different in some ways. This variation means that some individuals have traits better suited to the environment than others.

which feature distinguishes protostomes from deuterostomes?

Answers

Answer:In Protostomes (“mouth first”), the mouth develops at the blastopore (Figure 3). In Deuterostomes (“mouth second”), the mouth develops at the other end of the gut (Figure 3) and the anus develops at the site of the blastopore. Protostomes include arthropods, mollusks, and annelids.

Explanation:

Awnser question in image

Answers

Answer:

B. 48 degrees c

Explanation:

Answer:

48 Degrees Celsius

Explanation:

It’s going up by one more than it went up the last time. Another way of looking at it is the increasing factor of the degrees is being added by one every single 2 hours.

Hope This Helped!

integral proteins are important to maintain the strength of the cell membrane. true of false?

Answers

Answer:

false

Explanation:

Integral proteins are one type of membrane protein. They are constantly associated with the membrane, carrying out many different functions but they do not maintain the strength of the cell membrane. The sentence is False.

-----------------------------------

Plasmatic membranes are composed of lipids and proteins.

Among the proteins, we can find integral proteins and peripheric proteins.

Integral proteins are permanently associated with the membrane.

They accomplish many different functions such as substances transport, cellular receptors, cellular adhesion, among others.  

According to how they are incrusted in the lipidic bilayer, integral proteins might be,

Transmembrane proteins ⇒  span the entire membrane

                                                     ⇒ present in every membrane cells

Monotypic integral proteins ⇒ attached to only one of the lipidic layers

Integral proteins provide structure to the plasmatic membrane, but they do not maintain its strength.  

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true or false? the endosperm in a seed develops into the embryo.

Answers

False. The purpose of the endosperm is to provide nutrients for the embryo.

How does this question represent the law of conservation of energy that energy cannot be created or destroyed? Consider the role of photosynthesis in your answer.

Answers

You need to put this into your own words, or else your school system will detect you copied from a source named Brainly.

Anyways, the law of conservation of energy is exactly what it says. Energy cannot be created nor destroyed. All they do is rearrange.

Now, for photosynthesis, it's an interesting thing. Photosynthesis takes the energy from the sun's light to produce sugars/carbohydrates. The sun's energy just got reused. It also uses water, which comes from the soil/ground. This simply, reuses the water. During photosynthesis, it also absorbs the carbon dioxide from the air. The carbon dioxide like everything else listed, got reused.

Meaning, energy does not leave. It endlessly works for different purposes. And as you should know, all of the water on the planet has been here since the dawn of time.

Hopefully this makes sense.  Have a nice day!


You have a cell, with a semi-permeable
membrane and a 1.5% potassium
concentration. You put it into a solution of
1.0% potassium. Is the solution hypertonic or
hypotonic? What direction would you expect
water to flow? What do you expect to see
happen to the cell?

Answers

The solution is hypotonic and therefore the water will flow into the cell and the cell will expand.
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