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3 years ago

What structure serves as a passageway for both air and food? A. pharynx B. trachea C. larynx D. bronchus

1 answer:

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<span>The answer is A. pharynx. The pharynx is a cavity behind the nose and mouth which serves as a passageway for both air and food. The passage for air begins at the nose and nasal cavity while the passage for food begins at the mouth and mouth cavity. These two passages cross at the pharynx but separate soon after. Air passes through the larynx and later into the trachea and bronchus on its way to the lungs. Food passes through the esophagus on its way to the stomach.</span>

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The embryonic period is the second period of prenatal development and extends from the third week through the eighth week. Selec

Anton [14]

True. The embryonic period is the second period of prenatal development and extends from the third week through the eighth week.

<h3>What is embryonic period?</h3>

Your kid goes through a phase of rapid change after conception known as the embryonic stage. From the fifth through the tenth week of pregnancy, this phase lasts. The infant is referred to as an embryo at this point. The embryonic stage is when a lot of changes take place.

<h3>What happens during embryonic stage?</h3>

The heart starts to beat and the organs develop and start to work during the embryonic period.

<h3>Why is embryonic stage important?</h3>

The brain develops during the embryonic period, which is crucial.

Learn more about embryonic here:

brainly.com/question/15875287

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1 year ago

What term(s) best describes enzymes? <br> O lipids<br> proteins<br> catalysts<br> both b and c

REY [17]

Answer:

The term that best describes enzymes is catalysts.

Explanation:

Lipids and proteins are substrate molecules which enzymes break down. Enzymes are otherwise known as biological catalysts as they help speed up chemical reactions.

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2 years ago

Considering the body’s organization from atoms to organ systems, in which level of organization are proteins like collagen? Desc

storchak [24]

Answer:

According to the levels of organization in the body, the level of organization in which proteins, like collagen, are found is the molecular level, allowing the structural support and the performance of other essential functions.

Explanation:

Proteins are biological macromolecules, polymers of units called amino acids. These molecules belong to the molecular level of organization in living organisms.

The level of organization where proteins are found allows them:

<em>Form an essential part of cells.</em>
<em>Contribute to the construction of tissues and organs.</em>
<em>Participate in metabolic reactions, as enzymes. </em>
<em>Defense of the organism, in the form of antibodies.</em>
<em>Regulation of vital functions, forming hormones.</em>

Other functions of proteins are to integrate the cell membranes and perform transport function, to form receptors and to be an energy reserve.

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3 years ago

Saturated fatty acids are degraded by the stepwise reactions of beta-oxidation, producing acetyl-CoA. Under aerobic conditions,

Tanya [424]

Answer:

4 ATP molecules

Explanation:

Normally, about 11 ATP molecules are generated as the result of Beta-Oxidation of saturated fatty acid in Kreb's Cycle. But the total removal of acetyl-CoA under certain aerobic condition decreases the overall yield and approximately 4 ATP molecules comes out from each removal of acetyl-CoA.

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3 years ago

What is the fleshy tab of tissue that hangs down the back of the throat called?

kondaur [170]

........................
The Uvula
........................

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3 years ago