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mixas84 [53]
3 years ago
14

Immediately following the arrival of the stimulus at the axon terminal there is a short period called the ________ period during

which no muscle tension is observed while the neurotransmitter is being released by exocytosis, diffusing across the synaptic cleft, and binding to its receptor to activate the muscle cell. relaxation latent contraction refractory
Biology
1 answer:
slega [8]3 years ago
7 0

Answer:

Immediately following the arrival of the stimulus at the axon terminal there is a short period called the latent period.

Explanation:

When a stimulus reaches the terminal of an axon, a period known as the latent period begins. This period has a short duration and during it it is possible to observe the blockage of new stimuli in the nerve fiber. Thus, the new stimuli fail to trigger an impulse and no muscle tension to be observed.

While the latent period is not finished, the neurotransmitter is released through the action of exocytosis that moves until it gets access to the receptor capable of activating the muscle cell.

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HELP. can someone please answer these questions for me.
rewona [7]

Answer:

The process illustrated in the diagram is the non light dependent reactions of photosynthesis termed as Calvin Cycle.

Explanation:

  • Two molecules of 3-phosphoglycerate (3-PGA) are produced or released from step one to step two of Calvin cycle.
  • The source of energy that helps to start step one are ATP and NADPH, mainly derived from the light dependent reaction.
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6 0
3 years ago
The level of which hormone increases after ovulation?
MArishka [77]

The answer should be C, progesterone.


Progesterone is the hormone which can help maintain the lining of uterus and to further thicken it so that the uterus is prepared for implantation and the development of a baby. The level of progesterone is significantly rose after ovulation.


On the other hand, LH, luteinising hormone, is produced by oestrogen, another female hormone which will drop after ovulation. LH helps stimulate ovulation and prevent the development of other follicles, the origin of eggs, to form yellow body instead. Which yellow body is the one which stimulates the production of progesterone.


Last but not least, I believe D should be testosterone, and it is a male hormone so it will not be found in female normally.


Therefore, your answer should be C, progesterone.

3 0
4 years ago
Which of the following is not one of the major principles of ecology?
Nitella [24]
D) Ecological systems often remain in balance if only one factor is altered.

Ecological system can affect one another regardless of how small or great the factor that was altered. This can have gradual and insidious effects on the ecosystem. <span>Ecosystem is encompassing all the life on earth in the physical environment that supports it. An ecosystem involves both the biological (plants, animals, human beings) and non-biological (land, water, soil, and atmosphere) community which interacts as a system. More importantly, the living things are very dependent on the abiotic community since it cannot survive by itself.</span>
4 0
3 years ago
Read 2 more answers
Adapt extinct mutation
lisabon 2012 [21]

That organism will survive in the future which adapt themselves according to the environment.

<u></u>

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Species that survive are the ones that <u>adapt</u>, make or meet changes.

Florida has a rich <u>fossil </u>record spanning from the Eocene to recent times. Florida fossils are often very well preserved.

Two examples of land animal fossils found in Florida are the <u>giant sloth</u> and the<u> </u><u>saber-tooth tiger</u>.

Some animals unable to adapt to the changing environment became <u>extinct </u>.

Living things <u>mutate </u>over time to meet their changing environment.

This biologist, Darwin, studied <u>evolution </u>in the 1800s.

The <u>glyptodont </u>was a giant, armadillo-like animal with a spiked tail that once lived in Florida.

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Nature selects the <u>fittest </u>for survival because they have useful traits.

Changes may occur in animals due to changes in the sequence of base pairs in their DNA, and this is known as a <u>mutation</u>.

Oldfield mice show <u>variation </u>in the color of their fur.

The survival of the light-colored old field mice on Florida's Gulf Coast is an example of the process called <u>adaptation</u>.

Evolution is a controversial theory that has survived much <u>criticism</u>.

Learn more about mutation here: brainly.com/question/17031191

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3 0
3 years ago
HELP!!!
Effectus [21]

Answer:

inside the nucleus

Explanation:

protons and nuetrons are in the nucleus, electrons are the ones that orbit a nucleus

5 0
2 years ago
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