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Anastaziya [24]
3 years ago
11

What in the dna is the source of genetic variation

Biology
1 answer:
Setler79 [48]3 years ago
6 0

Answer:

Mutation i think.

Explanation:

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The _______ growth model shows an S-shaped curve because the population is limited by the carrying capacity.
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Answer:Sigmoid

Exponential

Death rate

Decrease in growth rate

Explanation:

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3 years ago
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The relationship between humans and their digestive bacteria can be described as... A) Commensalism B) Competition C) Mutualism
Flura [38]

Answer: The correct answer is -

C) Mutualism.

Explanation:

Mutualism is a type long term biological relationship between two organisms belonging to same or different species in which both are benefitted from one another.

For example - E.coli bacteria, present large intestines of human, gets food and place to live in our digestive tract. In return, the bacteria produce vitamin K, which make it harder for other disease causing bacteria to establish in our system.

Thus, option C) is the right answer.

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3 years ago
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Plasma contains more sodium than chloride. How can this be if individual ions of sodium and chloride exactly balance each other
MAXImum [283]

In addition to chloride, there are other negatively charged molecules in plasma. The extra sodium restores the balance of the overall negative charges.

So this is how plasma is electrically neutral.

<h3>The makeup of bodily fluids:</h3>
  • High levels of sodium, chloride, bicarbonate, and protein can be found in the plasma.
  • High levels of salt, chloride, and bicarbonate but a relatively low level of protein can be found in the IF.
  • The ICF, on the other hand, contains higher levels of protein, phosphate, magnesium, and potassium.
<h3>What occurs when the plasma Na+ content rises?</h3>
  • Although the plasma sodium concentration does not provide any information regarding the volume of extracellular fluid, it does allow for an assumption regarding intracellular volume.
  • A rise in plasma sodium (plasma osmolality) causes water to be drawn out of the cell, which causes the intracellular volume to decrease.
<h3>Why does plasma have a higher sodium content than chloride?</h3>
  • In plasma, sodium predominates over chloride.
  • In addition to chloride, there are other negatively charged molecules in plasma.
  • The extra sodium restores the balance of the overall negative charges.

To learn more about plasma charge visit:

brainly.com/question/22196626

#SPJ4

4 0
1 year ago
During periods of intense activity, your body releases an antidiuretic hormone called vasopressin that causes the body to retain
timama [110]
Hyponatremia is a condition where the concentration of sodium is abnormally low in the body. Sodium acts as an electrolyte that helps in maintaining the amount of water in the body.

Extremely low amount of sodium in the body leads to weakness, headache, etc. During periods of intense activity body releases vasopressin hormone that helps body to retain water. Endurance athletes become vulnerable to developing hyponatremia because these athletes during water during strenuous exercises. This makes the concentration of sodium low in the body by diluting it with more water.This may lead to hyponatremia.
8 0
3 years ago
In what stage of cellular respiration is most of the carbon dioxide produced?
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 <span>The first carbon dioxide is produced in between glycolysis and the Krebs/citric acid cycle. </span>
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