Which of the following fish have a cranium but lack a backbone?
a. Hagfish
b. Sting ray
c. Lamprey
d. Tuna
e. Shark
a
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XY individuals with total androgen
insensitivity syndrome
a. do not secrete testosterone. b. secrete testosterone but the testosterone is ineffective. c. have mutated testosterone receptors in their cells. d. secrete more estrogen than testosterone. e. have normal male genitalia
Cephalopods have an open circulatory system
____________________ Indicate whether the statement is true or false.
In the "typical" menstrual cycle, day 13 or 14 is when
A) the corpus luteum disintegrates. B) progesterone levels peak. C) menstruation begins. D) ovulation occurs. E) estrogen levels reach their lowest point.
The largest molecule of the following is
A. glucose. B. a polysaccharide. C. a disaccharide. D. sucrose. E. a monosaccharide.