Triglycerides are composed of:

monosaccharides

a glycerol plus three glycogen chains

a glycerol plus three amino acid chains

a glycerol plus three fatty acid chains

Answer and Explanation

The Correct Answer is D

A. monosaccharides: Monosaccharides are the building blocks of carbohydrates, not lipids.
B. a glycerol plus three glycogen chains: Glycogen is a polysaccharide, not a component of triglycerides.
C. a glycerol plus three amino acid chains: Amino acids form proteins, not triglycerides.
D. a glycerol plus three fatty acid chains: A triglyceride is made of one glycerol molecule and three fatty acids-this is the primary structure of fats.

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Correct Answer is A

Explanation

A. nucleus; in the cytoplasm at the ribosomes
Transcription is the process of converting DNA to mRNA and occurs in the nucleus. Translation is the process of reading mRNA to synthesize proteins and occurs at the ribosomes, which are located in the cytoplasm (either free-floating or bound to rough ER).
B. nucleus; in the cytoplasm at the Golgi apparatus
Transcription occurs in the nucleus. But translation does not occur at the Golgi apparatus. The Golgi modifies, packages, and ships proteins, but does not synthesize them.
C. in the cytoplasm at the ribosomes; in the nucleus
This reverses the correct locations. Transcription is not in the cytoplasm, and translation is not in the nucleus.
D. in the cytoplasm at the ribosomes; in the rough endoplasmic reticulum
Transcription does not occur in the cytoplasm. While translation can occur on ribosomes attached to the rough ER, that’s a subset of ribosomes. The general location of translation is in the cytoplasm.

A. as body temperature rises, sweating occurs to cool the body B. after drinking large amounts of water, urine output decreases to raise blood volume C. decreases in blood pressure cause a corresponding decrease in heart rate D. as blood pressure falls, blood flow to the heart decreases

Correct Answer is A

Explanation

A. As body temperature rises, sweating occurs to cool the body:
An example of negative feedback, where the body counters a change to restore normal state.

B. After drinking large amounts of water, urine output decreases to raise blood volume:
Urine output would actually increase to excrete the excess water and maintain volume.

C. Decreases in blood pressure cause a corresponding decrease in heart rate:
A decrease in blood pressure should cause the heart rate to increase (compensatory response).

D. As blood pressure falls, blood flow to the heart decreases:
The body usually increases heart rate and vasoconstriction to maintain cardiac output.

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Triglycerides are composed of:

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Naxlex Comprehensive Predictor Exams

Transcription takes place in the ______ and translation takes place ______

Correct Answer is A

Explanation

Which of the following is consistent with homeostasis?

Correct Answer is A

Explanation

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