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LiRa [457]
3 years ago
6

What are the internal and external regulators?

Biology
2 answers:
photoshop1234 [79]3 years ago
8 0
Internal means its on the inside 
external means its on the outside 

so an internal regulator is when the proteins respond to events on the inside of a cell 
and an external regulator is when the proteins respond to events outside the cell
Shkiper50 [21]3 years ago
3 0
The Difference Between How Internal<span> & </span>External Regulators<span> Work. </span>Internal and external regulators<span> both work to determine the length of time from one cell division to the next. This interval is called the cell cycle. ... The cell membrane separates the interior of the cell from its outer environment.</span>
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What might be involved in closure of the neural tube?
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The Energetics of Coupled Transport
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Answer:

Explanation:

A. False - A symporter system requires that one of the molecules to be transported using passive transport.

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C.  False -  sucrose moves through ion channels not by diffusion to better control its movement across the membrane.

D. True - Movement of molecules against their concentration gradient thus requiring energy input is known as active transport.

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6 0
3 years ago
Which process is a squeezing motion of the circular layer of smooth muscle in the small intestine?
Over [174]

Segmentation is a squeezing motion of the circular layer of smooth muscle in the small intestine.

<h3>What is segmentation in the small intestine?</h3>

Segmentation, which mostly affects the small intestine, is made up of localized contractions of the Gastro-Intestinal tract's circular muscle. These contractions separate out little portions of the intestine, allowing their contents to move back and forth while being continuously divided, broken up, and mixed.

Our intestines' circular muscles contract during segmentation to churn food back and forth, rather like a washing machine. This churning helps break down food into tiny bits for digestion by allowing it to mix with gastric secretions in the intestines. By bringing chyme into contact with the intestinal walls during segmentation, the technique also helps to increase absorption.

Learn more about segmentation here:

brainly.com/question/2133778

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1 year ago
The earliest organisms were completely heterotrophic in nature.
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They were completely heterophic in nature because it allowed them to absorb different material from the environment as an energy source
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