which vitamin acts most like a hormone

ATI RN

ATI Nutrition Proctored Exam

1. Which vitamin acts most like a hormone?

A. Vitamin A
B. Vitamin B
C. Vitamin D
D. Vitamin C

Correct answer: C

Rationale: The correct answer is Vitamin D. Although vitamin D, also known as calciferol, has been called a vitamin, it is more appropriately classified as a hormone. Like hormones, vitamin D acts to control the function of other cell types. For example, it helps the body absorb and regulate skeletal calcium and phosphorus levels. Choice A (Vitamin A) plays a crucial role in vision and immune function. Choice B (Vitamin B) is a complex of different vitamins that play various roles in the body. Choice D (Vitamin C) is important for collagen production and acts as an antioxidant.

2. What is considered an acceptable LDL cholesterol level for children and adolescents?

A. Less than 70 mg/dL
B. Less than 110 mg/dL
C. Less than 129 mg/dL
D. Less than 170 mg/dL

Correct answer: B

Rationale: An LDL cholesterol level of less than 110 mg/dL is considered acceptable and healthy for children and adolescents. This level helps reduce the risk of cardiovascular diseases. Choices A, C, and D are incorrect because an LDL cholesterol level below 110 mg/dL is the recommended target for children and adolescents to maintain good heart health.

3. 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.

4. A client who has chronic lymphocytic leukemia is starting chemotherapy treatments and asks if she needs to make any dietary changes. Which of the following statements should the nurse make?

A. "You should avoid drinking liquids an hour before the treatments."?
B. "Eating low-calorie foods helps prevent nausea."?
C. "Foods that are higher in fat are usually more appealing."?
D. "Raw fruits and vegetables will be easier for your body to digest."?

Correct answer: D

Rationale: During chemotherapy treatments for chronic lymphocytic leukemia, raw fruits and vegetables are recommended as they are easier for the body to digest. This choice provides essential nutrients and is gentle on the digestive system. Option A is incorrect because staying hydrated is crucial during chemotherapy. Option B is incorrect as low-calorie foods may not provide sufficient energy during treatment. Option C is incorrect because high-fat foods are not typically recommended due to potential digestive issues.

5. How many amino acids are essential?

A. 5
B. 7
C. 9
D. 13

Correct answer: C

Rationale: The correct answer is C: 9. There are 9 essential amino acids that the body cannot synthesize and must be obtained through the diet. These 9 amino acids are histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan, and valine. Choices A, B, and D are incorrect as they do not represent the correct number of essential amino acids.