Sperm carry
A) only one X sex chromosome, exclusively.
B) only one Y sex chromosome, exclusively.
C) no sex chromosomes.
D) two Y sex chromosomes.
E) one X or one Y sex chromosome.
E) one X or one Y sex chromosome.
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If you had a middle ear infection, to which of the following bone areas is the illness most likely to spread?
A) hypophyseal foramen B) sella turcica C) perpendicular plate D) mastoid part E) mandibular fossa
The parietal cells of gastric glands secrete
A. hydrochloric acid. B. pepsin. C. mucus. D. pepsinogen.
After sperm are produced, they enter the first part of the duct system, the:
a.) ductus deferens b.) ejaculatory duct c.) epididymis d.) urethra
Which of the following is NOT a connective tissue?
a) Bone b) Blood c) Cartilage d) Tendons e) Epidermis