What would be the result of a mutation that reduces the amount of acrosomal enzymes?
A. Female infertility due to blockage of sperm from tunneling through the archenteron
B. Male infertility due to inability of the sperm to tunnel through the blastula
C. Male infertility due to inability of the sperm to tunnel through the zona pellucida
D. Female infertility due to blockage of sperm from tunneling through the allantois
Answer: C
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An axillary bud
(a) is found along internodes. (b) produces new roots. (c) is the structure from which branches and flowers arise. (d) is the same as a terminal bud.
Why was it important that Darwin visited islands, and then compared island species with continental species?
A. Because Darwin found unique species on the islands. These island species did not have any of the characteristics of their ancestral continental species. B. Because Darwin's attention was drawn to the uniqueness of the island species, even though they retained some resemblance to continental species. C. Because Darwin's attention was drawn to the uniqueness and variety of finches on the islands, determining that their adaptations came from eating different food than continental species. D. Because Darwin saw very low reproductive survival rates on the island as compared to the mainland. E. Because Darwin observed continental species of finch flying to the islands.
Bioluminescence involves all of the following
EXCEPT a. stable electrons. b. ATP. c. oxygen. d. luciferin. e. luciferase.
How do daughter cells at the end of mitosis and cytokinesis compare with the parent cell before DNA replication occurs?
A) The daughter cells have half the number of chromosomes and half the amount of DNA. B) The daughter cells have the same number of chromosomes and the same amount of DNA. C) The daughter cells may have the same number of chromosomes but double the amount of DNA. D) The daughter cells have half the amount of cytoplasm and half the number of chromosomes.