At what stage of pregnancy does an embryo show a beating heart and a complete central nervous system?

a. 8 weeks
b. 12 weeks
c. 16 weeks
d. 20 weeks
e. 24 weeks


ANS: A

Nutritional Science

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What type of fatty acid chain contains one double carbon bond?

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Which of the following foods is the most nutrient-dense per serving?

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Which of the following physiological changes is a result of catabolic chemical reactions?

A. Muscle mass enlargement that occurs after lifting weights B. Weight gain that occurs after 3 weeks of overeating C. Bone growth that occurs during adolescence D. Muscle loss that normally occurs in older adults

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