Read the following statements that describe what happens as an impulse travels. What is the correct order in which the steps occur? 1) The impulse continues to travel down the axon away from the cell body. 2) Na+ gates close and K+ ions flow back out of the cell restoring the resting potential. 3) Gated K+ and Na+ channels are closed. The inside of the cell is slightly negative compared to the outside. 4) The neuron receives a stimulus great enough to start an impulse. 5) Gated Na+ channels open. The net movement of Na+ ions into the cell produces the action potential..

Answers

Answer 1
Answer:

Answer:

4) The neuron receives a stimulus great enough to start an impulse.

5) Gated Na+ channels open. The net movement of Na+ ions into the cell produces the action potential..

2) Na+ gates close and K+ ions flow back out of the cell restoring the resting potential.

1) The impulse continues to travel down the axon away from the cell body.

3) Gated K+ and Na+ channels are closed. The inside of the cell is slightly negative compared to the outside.

Answer 2
Answer: I believe that the order is 4,5,2,3. 1 can fit anywhere after the neuron receives a signal strong enough to start an action potential. Once an action potential is generated at voltage gated channels it results in a stimulus of surrounding neurons. 

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What does a red shift in light from distant celestial objects indicate to a scientist on earth?

Answers


A red shift in light from a distant source is always assumed to indicate
that the distant source is moving away from us.  That would certainly
cause it, and we don't know of anything else that would, so it's the only
way we know to explain it.

Just about all of modern Cosmology, including the whole idea of the
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Understand this:  That interpretation does explain many things that
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Females are represented by _________, and males by ______?

Answers

Answer:

I think you're referring to pedigree symbols.

In pedigrees, males are represented by a square and females by a circle.

Explanation:

* Refer to the attached image.

Females are represented by eggs and male are represented by sperm

What do anaerobic organisms have in common with photosynthetic organisms?A.) They both appeared on Earth at about the same time.
B.) They both can only exist as single-celled organisms.
C.) They both need an energy source in order to survive.
D.) They both produce carbon dioxide as a waste product.

Answers

Ans is option C. They both need an energy source in order to survive.

Energy is an absolute necessity to survive on this earth. All living organisms need energy be it anaerobic or photosynthetic.  Photosynthetic organisms can make their own food in the presence of sunlight by photosynthesis and harness energy from it. Anaerobic organisms can also make their own food in the absence of sunlight with the help of inorganic molecules like hydrogen sulfide (H2S), ammonia (NH3), sulphur (S) etc.

Its just that anaerobic organism's way of harnessing energy is different from those of aerobes/photosynthetic organisms but they need energy source for sure.

Gregory is studying Lake Mairead. The lake has clear water and supports a healthy community of algae, fishes, and other aquatic organisms Gregory hypothesizes that phosphorus is a limiting nutrient in the lake. Which experimental result provides me strongest evidence in support of the hypothesis?

Answers

Answer:b

Explanation:

Hat is the difference between DNA and RNA? A. DNA is a protein and RNA is a nucleic acid.
B. DNA uses deoxyribose and RNA uses ribose.
C. DNA has adenine and RNA has thymine.
D. DNA has thymine and RNA has uracil.

Answers

The difference between DNA && RNA is 'DNA uses deoxyribose  and RNA  uses ribos ' 


So, your answer would have to be. B. DNA uses deoxyribose  and RNA use ribose"
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At the base of the brain is the _____, which controls the pituitary gland and maintains homeostasis.

Answers

Answer: Hypothalamus

- - Why?


At the base of the brain is the hypothalamus , which controls the pituitary gland and maintains homeostasis.


✡Hope this helps✡