Which of the following is NOT a brush border enzyme?
A. Lactase
B. Nucleotidase
C. Amylase
D. Peptidase
Answer: C
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The closed foramen ovale becomes the ________ after birth.
A. fossa ovalis B. ligamentum arteriosum C. ligamentum venosum D. ligamentum ovale E. valves
This figure illustrates bone growth in length at the epiphyseal plate. Zone "A" represents
A. the zone of calcification. B. the zone of proliferation. C. the zone of resting cartilage. D. bone tissue of the diaphysis. E. the zone of hypertrophy.
In the blastocyst, the trophoblast will become ________, whereas the embryoblast will become ________.
A. the embryo; the yolk sac B. part of the placenta; the embryo C. the yolk sac; the embryo D. the embryo; part of the placenta E. part of the placenta; the yolk sac
Which of the following are considered an "essential" nutrient?
a. All amino acids b. glucose molecules c. fatty acids d. certain vitamins e. hormones