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Monica [59]
3 years ago
7

Which of these conditions indicate positive feedback has occurred?

Biology
1 answer:
aleksklad [387]3 years ago
8 0

Answer;

A) Blood pressure decreases greatly; blood flow to the heart is inadequate, and blood pressure decreases.

Explanation;

-With negative feedback, the output reduces the original effect of the stimulus. While in a positive feedback system, the output enhances the original stimulus.

-Negative feedback is the most commonly used feedback loop in the body. Negative feedback is used to negate or counteract a stimulus without completely eradicating it.

-One key difference between the two feedback is that positive feedback loops are used to eradicate a stimulus. Another key difference is that responses through positive feedback become more amplified over time. So once a stimulus activates a positive feedback loop it is not turned off until the stimulus is completely removed.

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Answer:

Blue offspring only

Explanation:

If A blue budgie is crossed with a white budgie.

i.e yyBB or yyBb × yybb

let use yyBb for blue budgie,so we have; yB, yb, yB, yb representing the columns on the horizontal rows of the punnet square.

on the other hand, in white budgie yybb, we will have yb, yb, yb, yb representing the rows on the vertical column of the punnet square.

if a dihybrid cross occurs among these representative, all progeny in the punnet square will be yyBb, showing that they are all Blue offspring only.

6 0
3 years ago
A science class is checking to see how much life exists in local streams. The students predicted their water sample would only h
guapka [62]

Answer:

In the last step of the scientific process when they compare their results.

Explanation:

The scientific process can be described of the following steps in order:

Starting with the observation, finding a point that asks a question which will be investigated, constructing a hypothesis that can be tested, testing the hypothesis and lastly comparing the results and starting over.

The example given in the question has a question to investigate, the students have a hypothesis. They test it and find out that the water sample can hold 20 amoeba which does not match their predictions. The students will check if their results match their predictions in the last step of the process when they compare their results with their hypothesis.

I hope this answer helps.

5 0
3 years ago
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galben [10]

Answer:

Being a hinge joint, the only movements allowed by the elbow are flexion and extension of the joint and rotation of the radius. The range of motion of the elbow is limited by the olecranon of the ulna, so that the elbow can only extend to around 180 degrees.

Explanation:

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Answer:

Yay, thanks!

Explanation:

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GREYUIT [131]

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Explanation:

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