Progesterone is produced in the pituitary and acts directly on the uterus
Indicate whether the statement is true or false.
ANS: F, ovary
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Complete reproductive isolation is evidence that what has occurred?
a. extinction b. speciation c. polyploidy d. hybridization e. gene flow
Why does a typical fish die quickly when it is removed from water?
A) Oxygen diffuses more rapidly in water than it does in air. B) The gills collapse and dry out in the air. C) Water contains more oxygen, per unit volume, than does air. D) Gills split water molecules into hydrogen and oxygen, which is used for cellular respiration.
Which mammal is able to synthesize all the vitamin C (ascorbic acid) it needs?
A. guinea pigs B. dogs C. monkeys D. humans E. All of the choices are correct.
A molecule becomes more oxidized when it ______.
Fill in the blank(s) with the appropriate word(s).