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Aleonysh [2.5K]
3 years ago
7

Which of the following statements is not true? In late adulthood, people start to lose nerve cells. In late adulthood, people sh

ow slowed nerve impulse transmission. In late adulthood, there is a decrease in nerve conduction velocity. All of the above are true.
Biology
1 answer:
Helen [10]3 years ago
3 0

Answer:

All of the above are true.

Explanation:

The structure and function of components of the nervous system are altered by the process of aging. In late adulthood, there is alteration in the neuromuscular junction and the nerve conduction velocity is also reduced.

The age-related slowed response of the nervous system is a result of the loss of nerve fibers from the peripheral nerves with aging. Both myelinated and non-myelinated nerve fibers of the peripheral nervous system are affected by aging and are lost resulting in slowed conduction of nerve impulse.

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What happens to the carbon dioxide (CO2) levels of a plant when it does or does not have light?
zubka84 [21]

Explanation:

Carbon dioxide is needed for photosynthesis, but oxygen is needed for cellular respiration. Assuming there is still oxygen then the plants will produce carbon dioxide and some of it will be reabsorbed by photosynthesis during daylight. However, ultimately there wouldn’t be enough carbon dioxide for the plants to grow and they will start to die. Some plants have evolved a C4C4 photosynthesis pathway so they only require a small amount of CO2CO2 to survive, however they do still require more than zero CO2CO2.

So basically you killed off all the plants and all the other non-microbial life died of starvation shortly afterward.

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8 0
2 years ago
Bacteria that can live in the intestines of cattle are anaerobic or aerobic
sertanlavr [38]
They are anaerobic bacterias.
5 0
3 years ago
Read 2 more answers
"The total concentration of receptors in a sample is 10 mM, and the concentration of free ligand is 2.5 mM. Calculate the percen
Mice21 [21]

Answer:

16.66 %

Explanation:

The receptors that are bound with the ligand can be calculated by the formula as follows:

Kd = [R] [L]/[RL]

Here, Kd is dissociation constant = 1.5 mM

R is free receptor concentration = 10 mM

L is free ligand concentration = 2.5 mM

The values needs to be constitute to find the percentage  of receptors that are bound to ligand.

Put all the values

1.5 = 10 × 2.5 / RL or RL = 25 /1.5

So RL = 16.66

Hence 16.66 % of receptor is bound to substrate.

Thus, the answer is 16.66%

3 0
3 years ago
4.In humans, the allele which confers the ability to roll the tongue is dominant over the allele which does not confer the abili
Elan Coil [88]

Answer:

The correct answer is - 1/2

Explanation:

the ability to roll the tongue is dominant over those who can not roll the tongue. The man is Rr (man), heterozygous. The woman is recessive and can not roll

Rr (man) x rr (woman)---Parents

           r

R Rr (roll)

r rr (cann't roll)

The probability of their children to able to roll = 1/2 = 50%

4 0
3 years ago
Starch and water molecules in potato cells are stored in what organelle?​
dybincka [34]
The organelle that the starch and water molecules would be stored in are amyloplasts .
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3 years ago
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