which of the following is the absorbable unit of a protein

ATI RN

ATI Nutrition Practice A

1. What is the absorbable unit of a protein?

A. Amino acid
B. Pepsin
C. Glucose
D. Sucrose

Correct answer: A

Rationale: Amino acids are the correct answer because they are the building blocks of proteins that the body absorbs after digestion. Pepsin, choice B, is incorrect as it is an enzyme that aids in the digestion of proteins, not the absorbable unit of them. Choices C and D, glucose and sucrose, are wrong because they are types of sugars, not proteins.

2. What is a major constituent of cell membranes?

A. cholesterol
B. phospholipid
C. saturated
D. triglyceride

Correct answer: B

Rationale: Phospholipids are a major component of cell membranes, providing structural integrity and facilitating cell signaling. Cholesterol (choice A) is also present in cell membranes but in smaller amounts and plays a different role. Saturated (choice C) and triglyceride (choice D) are not major constituents of cell membranes.

3. Which of the following statements about Z-Track technique is false?

A. Z-Track injections prevent irritation of the subcutaneous tissues
B. The technique involves creating a Zig-Zag like pattern of medication
C. It forces the medication to be contained in the subcutaneous tissues
D. It is used when administering Parenteral Iron

Correct answer: B

Rationale: The Z-Track technique is aimed at preventing medication leakage into the surrounding tissues by sealing the medication in the muscle, not by creating a Zig-Zag pattern. Choice A is correct as Z-Track injections help prevent irritation. Choice C is correct as it accurately describes how the technique works. Choice D is also correct as the Z-Track technique is commonly used when administering Parenteral Iron to prevent staining and irritation of the surrounding tissues.

4. Sickle cell disease is an example of an inherited mistake in the amino acid sequence.

A. TRUE
B. FALSE
C.
D.

Correct answer: A

Rationale: The statement is TRUE. Sickle cell disease is caused by a genetic mutation in the hemoglobin gene, leading to an abnormal amino acid sequence. This results in the production of abnormal hemoglobin molecules, causing red blood cells to become sickle-shaped. This inherited condition is a classic example of a genetic error affecting the amino acid sequence, making choice A the correct answer. Choices B, C, and D are incorrect as they do not accurately reflect the nature of sickle cell disease.

5. Where is Vitamin K synthesized?

A. by bacteria in the GI tract
B. by the body by sunlight
C. deficiency is called beriberi
D. found in vegetable oils

Correct answer: A

Rationale: Vitamin K is synthesized by bacteria in the gastrointestinal tract. Choice B is incorrect as the synthesis of Vitamin D, not K, can be induced by sunlight exposure. Choice C is incorrect as beriberi is a condition caused by thiamine (Vitamin B1) deficiency, not Vitamin K. Choice D is incorrect as Vitamin E is commonly found in vegetable oils, not Vitamin K.