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Tema [17]
3 years ago
12

He wavy movement that pushes the food into next organ of digestive system is called

Biology
1 answer:
Anna [14]3 years ago
4 0

Answer: peristalsis

Explanation:it's the contraction and relaxation of muscles as the bolus moves down the oesophagus

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What does defined boundary mean
Mkey [24]

Answer:

Something that indicates or fixes a limit or extent. Those two trees mark the boundary of our property. The mountain range that forms the country's northern boundary.

Explanation:

It is one of these meanings because I don't know what type of boundary you mean.

7 0
4 years ago
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Recall that a small amount of releasing factor from the hypothalamus can cause the adrenal cortex to secrete a much greater amou
Andreyy89

Answer:

The correct answer is- hormone signal amplification

Explanation:

The signals that are received by the cell can be amplified in the cell which results in the production of more than one molecule of the product. There is a signal pathway in every cell and the longer the signal pathway the more amplification chances are there.

For example, one membrane receptor is able to produce 10 secondary messengers and each secondary messenger generates 10 mRNA transcript so here the signal amplified by 1000 folds.

So in this question, it is seen that a small amount of releasing factor causing the release of a much greater amount of cortisol which shows the example of hormone signal amplification.

3 0
4 years ago
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Most bacteria:
rjkz [21]

Answer:

a. do not immediately increase in number when placed in a culture

Explanation:

When bacteria placed in a new culture it shows a pattern of growth which is known as sigmoid growth. It has four phases lag, log, stationary, and death.

The lag phase occurs because bacteria do not start dividing immediately just after the placed in the new culture media because bacteria first adapt to the new environment and prepare enzymes needed for metabolizing the new substrate.  

As the bacteria pass this lag phase it starts to divide at an exponential rate. Therefore it is true that most bacteria do not increase in number immediately after placed in a new culture.

4 0
3 years ago
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How was Christopher Columbus able to successfully follow a course west to the Americas without the help of an accurate map?
77julia77 [94]
He had used a compass. I hope this helps!
4 0
3 years ago
Which of the following events does NOT take place in the light reactions?
Setler [38]

Answer:

B) Conversion of 3PG to G3P

Explanation:

Conversion of 3PG (3 phosphoglycerate) or 3 phosphoglyceric acid is a reduction reaction step of the Calvin cycle, it does not take place during light reaction of the photosynthesis. The 3PG is converted into molecules of glyceraldehyde-3-phosphate (G3P) using ATP and NADPH. Generation of NADPH from NADP+, Photolysis or splitting of splitting of water that releases an electron and synthesis of ATP from ADP + Pi occurs during light reactions.  

6 0
3 years ago
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