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Luden [163]
3 years ago
9

What does it mean for a cell membrane to be selectively permeable?

Biology
2 answers:
Vera_Pavlovna [14]3 years ago
7 0
B.
It allows some substances to pass through but blocks the passage of others.
tatyana61 [14]3 years ago
3 0

Answer:

B. It allows some substances to pass through but blocks the passage of others

C would be the explanation for B which is why I chose B, even though both are true. I hope this helps and am very sorry if the answer is incorrect.

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Adrenaline stimulates glycogen breakdown in skeletal muscle cells by ultimately activating glycogen phosphorylase, the enzyme th
r-ruslan [8.4K]

Answer:

d) A constitutively active mutant form of PKA in skeletal muscle cells would lead to an excess in the amount of glycogen available.

Explanation:

This occurs in the process of Glycogenolysis. The process involves breaking down of glycogen to glucose  -1- phosphate and glycogen which helps in the release of glucose into the blood stream to prevent hypoglycemia(low blood sugar). The glucose-1-phosphate is later converted to glucose -6-phosphate. The latter enters the glycolytic pathway in which the reaction is catalysed by the enzyme phosphoglucomutase.

This homeostatic glucose regulation  is regulated by the protein kinase(PKA)/ cAMP pathway in the skeletal muscles, the liver and the pancreas.

6 0
3 years ago
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What is the purpose of using genetic engineering to create edible vaccines
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Many people hate shots and don't receive the vaccination, causing many illnesses spread around.<span />
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3 years ago
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A population of deer lives in Canada. Over 50 years, the size of the deer
Luda [366]

Answer:

hunting.

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7 0
2 years ago
The activation of beta2 receptors in the bronchi causes bronchodilation (an increase in diameter of the bronchi), making it easi
UNO [17]

Answer:

The correct answer is (b) epinephrine.

Explanation:

Epinephrine, also known as <em>Adrenaline</em>, is a hormone secreted by the medulla of the adrenal glands.

In medicine, epinephrine is used as a stimulant in cardiac arrest, as a vasoconstrictor in shock and as a bronchodilator and antispasmodic in bronchial asthma.

When epinephrine is inhaled in small doses, it causes short-term relief from the symptoms by widening the bronchial tubes allowing air to pass through.

I hope it helps!

8 0
3 years ago
What did distilled oil replace in the 1880s <br>​
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