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Varvara68 [4.7K]
2 years ago
15

Which of these neurotransmitters does not bind to a plasma membrane receptor?

Biology
1 answer:
Helen [10]2 years ago
4 0
When neurotransmitter molecules bind to receptors in the plasma membrane of the receiving neurona. ion channels in the plasma membrane of the sending neuron open. b. ion channels in the plasma membrane of the receiving neuron open. c. the receiving neuron becomes more negative inside. d. the receiving neuron becomes more positive inside. e. vesicles in the synaptic terminal fuse to the plasma membrane of the sending neuron.
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This diagram shows the menstrual cycle.
LiRa [457]

Answer:

According to the hormone diagram of the menstrual cycle, the woman is not pregnant due to the behavior of progesterone and estrogens, whose levels do not increase, in addition to the absence of human chorionic gonadotropin.

Explanation:

The graph shows the behavior of hormones during a woman's menstrual cycle in the absence of pregnancy.

During a woman's normal cycle, estrogen, luteinizing hormone (LH) and follicle stimulating hormone (FSH) tend to increase prior to ovulation, reach their peak values at ovulation, and then decline, as shown in the graph. Progesterone, on the other hand, increases after ovulation and decreases if the woman does not become pregnant.

In the case of a pregnant woman:

  • <u>Estrogens</u> continue to increase after ovulation, produced by the ovaries and placenta.
  • <u>Progesterone</u> also increases its levels, as it is a hormone produced by the ovaries and placenta.
  • <u>Hormone human chorionic gonadotropin</u> (HCG) appears and increases during pregnancy, due to the secretory activity of the placenta.

<em><u>The diagram represents the normal cycle of a woman who is not pregnant</u></em>.

4 0
3 years ago
What is aspeciation​
Aleksandr-060686 [28]

Explanation:

The act of aspiring or ardently desiring; an ardent wish or desire, chiefly after what is elevated or spiritual (with common adjunct adpositions being to or of)

4 0
3 years ago
One of the reasons you might struggle to lift a heavy object with your arm fully extended is because:_______.
klasskru [66]

Answer:

the overlapping decreases between the thin and thick filaments.

Explanation:

When w extend our hand or arm to the full and try to lift any heavy object, we are unable to lift the object inspite of applying all our force. We struggle hard to lift the object with our fully extended arm because when we extend our arm fully it decreases the overlapping of our thin and the thick filaments of our muscles which makes it difficult to lift. In other words, the resting length of our arm is the optimal length to generate force.

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3 years ago
The Earth’s crust is divided into large sections like puzzle pieces called plates. The plates move due to uneven heating in the
Brut [27]

Answer:

This movement is called plate motion, or tectonic shift

Explanation:

3 0
2 years ago
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A scientist analyzed a segment of DNA from a human chromosome and found that the percentage of cytosine molecular bases (C) was
Pachacha [2.7K]

Answer:

16%

Explanation:

3 0
3 years ago
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