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Margarita [4]
3 years ago
9

Question 9 of 30

Biology
1 answer:
Lena [83]3 years ago
7 0

Answer:

A

Explanation:

Because of all gases escaping into the air

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D. nitrogen

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What part of the respiratory system exchanges gases between the respiratory system and the circulatory system?.
kirill [66]

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The lungs

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g What will be the effect of the overexpression of this truncated receptor? EGFR will dimerize but will not cross‑phosphorylate,
Alexandra [31]

Answer:

<h2>EGFR will activate other proteins without dimerization, causing uncontrolled cell growth.</h2>

Explanation:

EGFR gene :

Epidermal growth factor receptor,

-which spans the cell membrane so that one end of the protein remains inside the cell and the other end located outer surface of the cell. This causes receptor to attach ligands, and to receive signals ,by which cell respond to its environment. Epidermal growth factor receptor binds to many different type of receptors. The binding of a ligand to receptor allows the receptor to attach to another nearby epidermal growth factor receptor protein (dimerize), activating the receptor complex. As a result, signaling pathways within the cell are triggered that promote cell growth and division and cell survival. If there is abnormlty in the expression of EGFR gene  , then the cell show uncontrolled growth.

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4 years ago
How many rings of cartilage make up the trachea?<br> 1. 00<br> 2. 50<br> 3. 10<br> 4. 20
lesya [120]
I believe the answer is 20, sorry if it’s wrong :(
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3 years ago
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