In sexual reproduction in humans ________.
A. haploid sperm fertilizes a haploid egg cell
B. two diploid gametes are combined to produce a zygote
C. a haploid individual is produced
D. an individual with 44 chromosomes is produced
A. haploid sperm fertilizes a haploid egg cell
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Which of the following statements about swallowing is false?
A. It is a series of voluntary motions of the roof of the mouth, tongue, and epiglottis. B. It is under the control of the autonomic nervous system. C. It conveys food from the pharynx through the esophagus and into the stomach. D. The tongue pushes a bolus of food to the rear of the mouth cavity to initiate swallowing. E. None of these statements about swallowing is false.
Type ________ hypersensitivity involves delayed, cell-mediated immune reactions.
A. I B. II C. IV D. III
Vitamin C ____
a. helps blood to clot b. is needed to make collagen c. is used to create coenzymes d. is fat soluble e. protects cell membranes
Which of the following is NOT a category of
fruit? a. complex b. simple c. aggregate d. multiple e. dry