The major difference between the human male and female reproductive systems is the ____
a. site for fertilization and embryo development in the female
b. production of haploid gametes only by the male
c. diploid polar bodies of the female
d. generation of millions of eggs but only thousands of sperm each month
e. presence of a duct system opening to the body's exterior only in females
ANSWER: a
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If the partial pressure of oxygen (pO2) in a man's blood plasma decreased below that in his red blood cells, what would be the result?
A. More oxygen would diffuse into his red
blood cells and be transported throughout his
body.
B. Oxygen would diffuse out of his red blood
cells, and less oxygen would be transported
throughout his body.
C. The concentration of oxygen would be the
same in red blood cells and blood plasma.
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Fill in the blank(s) with the appropriate word(s).
Which one of the following terms applies to the phylum Cnidaria?
A. radial symmetry B. pseudocoelomate C. Parazoa D. triploblastic E. protostome