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4 years ago

Which best describes the role of a negative feedback loop?

Biology

2 answers:

beks73 [17]4 years ago

9 0

The role of the negative feedback loop is,

that the output is being reduced so that the body can maintain homeostasis.

The negative feedback loop is a homeostatic control mechanism through which levels of hormones are maintained within a narrow range by feeding the product back to decrease its production.

Mama L [17]4 years ago

9 0

Answer:

The output is reduced so the body can maintain homeostasis.

Explanation:

Our body tends to maintain a stable state under all conditions by utilizing the various physiological processes and this maintenance of stability is termed as homeostasis.

Negative feedback loop is one of the ways through which the body can maintain its homeostaiss.

This loop is regulated by itself and it functions to decrease the output when it increases to a greater level by inhibiting its production from the source.

For example, if the levels of the pituitary hormones increases then the negative feedback loop will signal the pituitary to inhibit the production of the hormone and this negative feedback will be provided by the increased product itself.

See the attached image for a better idea.

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A scientist observes a cell under a microscope and notices that the cell’s cytoplasm is almost completely full of the rough endo

asambeis [7]

Answer:

Proteins

Explanation:

Endoplasmic Reticulum is part of the endomembranous organnelles in a living eukaryotic cell. It is either found as smooth or rough depending on whether or not ribosomes are attached to their surfaces. The attachment of ribosomes (organnelles of protein synthesis) gives the Rough Endoplasmic Reticulum (RER) its characteristic rough appearance.

Rough Endoplasmic Reticulum, due to the attachment of ribosomes to it, performs a function related to protein synthesis. Rough Endoplasmic Reticulum helps in the production and folding of proteins synthesized in the ribosomes attached to them.

Based on this, a cell whose cytoplasm is almost completely full of Rough Endoplasmic Reticulum would be making proteins in large amounts since that is the primary function of the RER.

3 0

3 years ago

Which definition is the best for “semipermeable membrane”?

levacccp [35]

Answer:

Choice B

Explanation:

"Permeable" means "Letting solids or liquids through (a material.)" "Semi" means "half or partly." So "semipermeable" means allowing some objects through, but not all.

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3 years ago

Plants get their food by _____.

Lina20 [59]

Plants make food in their leaves. The leaves contain a pigment called chlorophyll, which colors the leaves green. Chlorophyll can make food the plant can use from carbon dioxide, water, nutrients, and energy from sunlight. This process is called photosynthesis.

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4 years ago

Read 2 more answers

A newly discovered unicellular organism isolated from acidic mine drainage is found to contain a cell wall, a plasma membrane, t

Nesterboy [21]

A MOTILE EUKARYOTE

According to the question, the new organism has:
1. A plasma membrane which is found in all living cells except viruses and prions.
2. Two flagella show that the organism is motile.
3. Peroxisome is a membrane bound cell organelle found in eukaryotic cell.

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4 years ago

If a single mutation turns off the growth of some pairs of legs within an organism, what's most likely affected?

poizon [28]

Answer is A. A Hox gene

Hox genes are a series of genes that controls the differentiation of cells and tissues in an embryo by turn on and off other genes. If Hox genes express incorrectly, a major changes in the morphology of the individual can be seen.

Let’s understand this with an example: The Ultrabithorax, a Hox gene determines the Third thoracic segment in Drosophila melanogaster. Third thoracic segment displays a pair of legs and a pair of reduced wings used for balancing. In the mutant Drosophila the functional Ultrabithorax protein is absent. Due to this mutation, the third thoracic segment now expresses the same structures found on the second thoracic segment, which contains a pair of legs and a pair of wings which are fully developed .

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3 years ago