Preliminary digestion of carbohydrates begins in the _____

a. mouth
b. esophagus
c. stomach
d. duodenum
e. jejunum


ANSWER: a

Biology & Microbiology

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The DNA sequences, indicated by alphabetic abbreviations, are alternate forms of the same gene called

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The reproductive structure where mature sperm are stored is the ____

a. testes b. epididymis c. vas deferens d. seminal vesicle e. prostate gland

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Which type of nutrient uptake involves the engulfment of small dissolved molecules into vesicles?

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