All categories

3 years ago

Negative feedback

Biology

1 answer:

zhuklara [117]3 years ago

7 0

Answer:

b. Works within an upper and lower range

c. " Is regulatory. "

d. Is very common in biological systems

Explanation:

Negative feedback is the regulatory mechanism that maintains homeostasis by counteracting the deviation. Any change serves as a stimulus and a response is produced to reverse the change. Negative feedback is a very common regulatory mechanism to maintain internal body conditions within a narrow range.

For example, the body temperature in adults is maintained within the narrow range of around 36 -37 degrees Celsius. An increase or decrease in the body temperature from the set point is counteracted to restore the set point. An increase in body temperature is reversed by the vasodilation of blood capillaries of skin layers to lose the heat to the surroundings. On the other hand, reduced body temperature below the set point is restored by constriction of capillaries of skin layers.

You might be interested in

Hemoglobin a protein found in red blood cells, carries oxygen. Abnormal hemoglobin cannot carry as much oxygen as normal hemoglo

stiv31 [10]

Answer AND Explanation:

Normal: GGA CTC CTC

Abnormal: GGA CAC CTC

mRNA for normal DNA: CCU GAG GAG

mRNA for abnormal DNA: CCU GUG GAG

Amino acids for normal DNA: Proline Glutamic acid Glutamic acid

Amino acids for abnormal DNA: Proline Valine Glutamic acid

4 0

3 years ago

The cells in the meristematic region of the root are undergoing

tangare [24]

The answer is d. mitosis.

The cells in the meristematic region of the root are embryonic cells. Thus, these undifferentiated cells have the capacity to undergo continuous mitotic divisions and divide into new cells. The meristematic region of the root contains meristem cells for the root growth.

7 0

3 years ago

2. Which of the following is an example of a polygenic trait?

Olenka [21]

I think the correct answer from the choices listed above is option D. Human height is determined by several genes located on different chromosomes which is an example of a polygenic trait. These traits are being controlled by more than one gene. Hope this answers the question.

3 0

3 years ago

Read 2 more answers

What are three parts that create an amino acid

Ilya [14]

Answer:

The three parts of an amino acid are the carboxyl group, the amino group, and the central carbon that contains the R group.

Explanation:

3 0

3 years ago

Increasing the volume of air that reaches the alveoli and takes part in gas exchange will cause blood pH to:

Karolina [17]

Answer:

B. increase, because the partial pressure of CO2 in the blood will decrease.

Explanation:

The presence of carbon dioxide gas in blood imparts H+ ions due to its reaction with H2O and thereby, lowers down the blood pH.

When more air reaches alveoli, the rate of gaseous exchange is increased. More of the carbon dioxide is removed from the blood and is released out of the body via exhalation.

Removal of carbon dioxide from blood would increase the pH of the blood since the partial pressure of CO2 in the blood would decrease.

8 0

3 years ago