Nokea
How does a nursing infant receive antibodies from its mother?
- A. Through anabolism and catabolism.
- B. Through the absorption of antibodies.
- C. Through the absorption of amino acids and synthesis of antibodies.
- D. Through genetic inheritance.
Correct Answer: B
Rationale: A nursing infant receives antibodies from its mother through the absorption of antibodies present in breast milk. Choice A is incorrect as anabolism and catabolism refer to metabolic processes, not the transfer of antibodies. Choice C is incorrect as the infant does not need to synthesize antibodies but directly receives them. Choice D is incorrect because while genetic inheritance plays a role in the immune system, in this case, the direct transfer of antibodies occurs through breast milk.
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Which lipoprotein increases the risk of cardiovascular disease?
- A. Low-density lipoprotein (LDL)
- B. High-density lipoprotein (HDL)
- C. Very low-density lipoprotein (VLDL)
- D. Chylomicrons
Correct Answer: A
Rationale: The correct answer is A: Low-density lipoprotein (LDL). LDL is often referred to as 'bad cholesterol' because it can lead to plaque buildup in arteries, increasing the risk of cardiovascular disease. High-density lipoprotein (HDL) is considered 'good cholesterol' as it helps remove LDL from the arteries, reducing the risk of cardiovascular issues. Very low-density lipoprotein (VLDL) and chylomicrons are also lipoproteins that transport fats in the bloodstream, but they are not as strongly associated with an increased risk of cardiovascular disease as LDL.
How can cholesterol absorption be decreased?
- A. Vitamin K.
- B. Plant sterols.
- C. Trans fats.
- D. Phospholipids.
Correct Answer: B
Rationale: The correct answer is B: Plant sterols. Plant sterols can reduce cholesterol absorption by competing with cholesterol for absorption sites. Vitamin K, choice A, does not have a significant impact on cholesterol absorption. Trans fats, choice C, are known to increase cholesterol levels rather than decrease absorption. Phospholipids, choice D, play a role in cell structure and are not directly involved in reducing cholesterol absorption.
What is the recommended dietary intake of protein for adults?
- A. 0.5 g/kg.
- B. 0.8 g/kg.
- C. 1.0 g/kg.
- D. 1.5 g/kg.
Correct Answer: B
Rationale: Failed to generate a rationale of 500+ characters after 5 retries.
Which option below is an example of a meal or snack that contains complementary proteins?
- A. an egg and cheese omelet
- B. a peanut butter sandwich
- C. trail mix with nuts and raisins
- D. mixed bean salad with green beans, kidney beans, and white beans
Correct Answer: B
Rationale: The correct answer is B, a peanut butter sandwich. A peanut butter sandwich combines grains from the bread and proteins from the nuts in the peanut butter, providing complementary proteins. This combination offers all essential amino acids. Choices A, C, and D do not contain complementary proteins as they lack the combination of different protein sources necessary to provide a complete amino acid profile.
Where is Vitamin B12 found?
- A. Whole grains.
- B. Nuts.
- C. Meats.
- D. Legumes.
Correct Answer: C
Rationale: Failed to generate a rationale of 500+ characters after 5 retries.