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ololo11 [35]
3 years ago
13

How does energy flow through a system?

Biology
1 answer:
mixer [17]3 years ago
7 0
Physical collisions and many other ways
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Short pea plants exist in the P1 and F2 generations. What happens to the phenotype in the F1 generation?
belka [17]

Answer:B:The allele for short pea plants is masked during the F1 generation, but is still present in the genotype

Explanation:

I took the test

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Which structures are responsible for mechanical breakdown of food
just olya [345]
Your teeth
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4 0
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Some people have low levels of calcium circulating in the blood, a condition known as hypocalcemia. while for many this disorder
kap26 [50]

Answer:

low level of calcium would result in fewer signals sent between pre and post synaptic cells.

Explanation:

The calcium has a main role in signal transmission mechanism and here is the mechanism :

1-the impulse reaches the synapse (depolarization which is a voltage change).

2-the voltage gated calcium channels open and let calcium flow into the cell.

3-the calcium causes the synaptic vesicles to rupture and release chemical transmitters which cross the synaptic cleft and finally bind to receptors on the post synaptic cell (transmitting the signal)

so it's obvious that if calcium concentration decreases, the signal transmission also decreases.

8 0
3 years ago
Rift valleys can form when fractures in the Earth's crust widen. The valley walls slowly move at a rate of only a few millimeter
Lilit [14]
My best answer would be C I hoped I helped sry if you get it wrong
4 0
3 years ago
Read 2 more answers
Women have a tendency to retain water during part of the menstrual cycle because estrogen mimics the action of what
Ira Lisetskai [31]

Answer:

This question lacks options, options are:

A) ADH

B) aldosterone

C) atrial natriuretic hormone

D) oxytocin

E) prolactin

The correct answer is B.

Women have a tendency to retain water during part of the menstrual cycle because estrogen mimics the action of <u>aldosterone</u>.

Explanation:

The female sex hormones produced by the ovary (estrogens and progesterone) are substances that, through the blood, will carry messages to all the organs of the female genital system (uterus, tubes and ovaries) to achieve their correct function. Aldosterone concentration normally increases at the time of ovulation and remains elevated during the luteal phase of the menstrual cycle. Women present during the premenstrual phase, compared to the luteal and follicular phases, an increase in body weight, due to an increase in fluid retention, this because the menstrual cycle modulates the renin-angiotensin-aldosterone system. High levels of estrogen and progesterone in the mid-luteal phase are associated with a greater increase in adrenal and renal hormones and retention of more volume.

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3 years ago
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