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aliya0001 [1]
3 years ago
14

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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Two students went for a walk in a small pond ecosystem where they observed several interactions. Read their observation below to
stira [4]

Answer:

<u>a food web</u>

Explanation:

What they saw was a food web, which refers to connections of food chains showing how energy and nutrients are transferred from one organism to the other.

In this example, we observe there are <u>seven</u> organisms (fish, algae, snails, insects, frogs, raccoons + bacteria contained in the pond) in focus here.

The green algae are Producers (because it produces its own food, not dependant on others)

The bacteria act as Decomposers. ( because they process organic waste into meaningful natural nutrients again)

The other organisms are Consumers. (because they are dependant on others for their nutrition).

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3 years ago
A registered nurse is teaching a nursing student about when a client with high blood pressure should follow up with the primary
Lady bird [3.3K]

Answer:

A. "I will advise a client with a blood pressure of 130/80 mm Hg to follow up in a year."

Explanation:

The normal blood pressure value is 120/80

A value of 130/80 could be the stage 1 of hypertension (high blood pressure). As this is the very limit, the client should check his/her blood pressure frequently in order to know if this progress to an hypertension or it is mainteined in the limit value.

The blood pressure chart:

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Hypotension                 <80          or          <60

Normal                          80-120     and       60-80  

Pre-hypertension         120-139    or          80-89

Hypertension level I     140-159   or           90-99

Hypertension level II    160 or above   or  100 or above

Hypertensive Crisis      >180                 or   >110

3 0
4 years ago
The kerbs cycle is considered a cycle because
Lady_Fox [76]

Answer:

It is a cycle because oxaloacetic acid is the exact molecule needed to accept an acetyl-CoA molecule and start another turn of the cycle.

8 0
4 years ago
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One of the most prominent features is the perceptual asymmetry or variability originating from the brain's perceptual responses to certain visual stimuli and/or to stimuli at the certain specific location of the retina. For example, vertical stimuli are represented and perceived better than oblique stimuli.  

Thus, during research with connected brain patients, the researchers study perceptual asymmetry or left/right imbalances between the cerebral hemispheres in auditory or visual processing speed.  


3 0
3 years ago
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If (the first layer of your model) is sea level, what elevation is each of the following points?
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I do not know at ALL. =( Sorry.
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