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3 years ago

Compare positive and negative feedback mechanisms

Biology

2 answers:

Alina [70]3 years ago

8 0

Answer:

Positive feedback mechanism:

This mechanism has positive correlation between the products and the process. The positive feedback mechanism result in the growth of a product. This mechanism is less common in organism and perform under specific conditions. Example: Process of blood clotting involves positive feedback mechanism.

Negative feed back mechanism:

This mechanism has negative correlation between the products and the process. Negative feedback mechanism result in the inhibition of the product. This mechanism is more common in organism and maintains homeostasis in the body.Example: Regulation of blood pressure involves negative feedback mechanism.

attashe74 [19]3 years ago

6 0

Answer:

Positive and negative feedback mechanisms are means by which Earth’s systems interact. Positive feedback involves an increase in the first variable leading to an increase in subsequent variables that ultimately leads to a greater increase in the first variable. Negative feedback involves an increase in the first variable, leading to an increase in subsequent variables that ultimately leads to a decrease in the first variable. Positive feedback speeds up the process and leads to instability. Negative feedback reduces changes in the system and helps to stabilize it.

Explanation:

the sample answer

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do you know any questions that is about "pigs being abuse on factory farms"? If so, can you please list them?

Elenna [48]

Why are they being abused?
Does a animal that is going to be used for human consumption deserve to be treated cruelly?
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4 years ago

Sperm and egg is responsible for reproduction?

enot [183]

Answer:

Sexual Reproduction

Explanation:

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3 years ago

Read 2 more answers

Selective breeding has been used for thousands

cricket20 [7]

(4) produce new varieties of domestic animals

Although (1) (2) and (3) are modern-day uses of selective breeding, they are relatively recent developments in human history, only used for the past century or less. (4) is correct because the selective breeding of domestic animals to produce new varieties of dogs, cats, etc. has been used for thousands of years, dating back to the ancient Chinese and Egyptian dynasties.

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3 years ago

3. The cell below is currently in Metaphase I. Draw the four resulting cells after the original cellgoes through Meiosis. Write

snow_tiger [21]

<em>You will find the cell in metaphase and the draw of the gametes in the attached files</em>

Answer:

Gametes: RY, RX, rY, rX

Explanation:

During metaphase I, homologous pairs migrate to the equatorial plane, where they randomly aline with their kinetochores facing opposite poles. The random arrangement of tetrads is different in every cell going through the meiosis process. There is no equal alinement between two cells. When tetrads aline in the equatorial plane, there is no predetermined order for each of the homologous chromosomes of each tetrad to face one of the poles and then migrate to it while separating. Any chromosome of the homologous pair might face any of the poles and then migrate to it. Each of the chromosomes has two possibilities for orientation at the plane.

During metaphase II, when the new haploid cells are formed, the number of variations in each cell is also different and depends on the chromosomes that form that cell. This random order in the equatorial plane is what introduces variation into the gametes. It is almost impossible that two gametes resulting from meiosis will get the same genetic charge.

Diploid cell) RrXY

Gametes) RY, rY, RX, rX

The alleles of each of the genes randomly migrate to different poles and combine with the allele of the other gene that migrated to the same pole.

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3 years ago

Who discovered skin cells

KIM [24]

It is actually unknown as to who some say it was some Dutch Scientists from Han clinic to this day no one knows exactly.

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3 years ago