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3 years ago

Which type of blood vessel is both strong and elastic?

Biology

2 answers:

Delvig [45]3 years ago

6 0

<h2>Answer:</h2>

B. Artery

<h3>Explanation:</h3>

The thicker and more muscular walls of arteries help them to withstand and absorb the pressure waves which begin in the heart and are transmitted by the blood.The larger arteries closer to the heart, receive a large amount of blood and have to be elastic. This is achieved by increased concentration of elastin fibers in tunica media which is the middle layer of the arterial wall. Artery carries the blood from the heart which is pure and it has to travel faster so it exerts more pressure on the wall. this is the reason why artery walls are strong and elastic.

kiruha [24]3 years ago

4 0

B! dont worry im positive

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Answer:

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2 years ago

What was the second organism to be found here on planet Earth? *

mafiozo [28]

What was the second organism to be found here on planet Earth?

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2 years ago

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Which of the following statements about gluconeogenesis in animal cells is true?

MakcuM [25]

Answer:

C. THE CONVERSION OF FRUCTOSE 1,6-BISPHOSPHATE to fructose- 6- phosphate is not catalyzed by phosphofructokinase -1, the enzyme involved in glycolysis.

Explanation:

This statement is true as the enzyme involved in this step is FRUCTOSE-1,6-BISPHOSPHATASE.

Gluconeogenesis is the coversion of non-carbohydrate molecules (lactic acid, amino acids, glycerol) through the pyruvic acid into glucose in the cells.

This process takes place mainly in the liver and occurs during periods of fasting, starvation, low carbohydrate diets.

The pathway of gluconeogenesis involves eleven steps of enzymatic catalyzed reactions.

In the conversion of fructose 1,6- bisphosphate to fructose-6-phosphate is catalyzed by fructose 1,6-bisphosphatase and not by phosphofructokinase -1 which is involved in glycolysis. This step is a rate-limiting step of the pathway.

The conversion of glucose-6-phospahte to glucose is not catalyzes by hexokinase but glucose -6- phosphatase.

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3 years ago

The body of fish is streamlined why

Ronch [10]

Hopes this helps:

Answer:

The body of a fish is streamlined because, it increase the speed of the fish in the water. The more the streamlined shapes more easier for the fish to swim in the water.

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3 years ago

The amount of energy stored in a molecule of ATP compared to the amount stored in a molecule of glucose is?

sineoko [7]

Answer:

The amount of energy stored in a molecule of ATP compared to the amount stored in a molecule of glucose is less.

Explanation:

Both ATP and glucose are energy containing molecules. However, a molecule of glucose has about 90 times more energy than a molecule of ATP.

But, ATP is used by most cells as the quickest source of energy. This is because ATP can easily be broken down to generate energy and it transfers energy very effectively.

A molecule of ATP is made up of adenine and three phosphate groups. The bond between the second and third phosphate is broken down to generate energy.

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3 years ago