If a cell had 12 chromosomes at the beginning of meiosis II, how many would each daughter cell have after the completion of meiosis II?
A. 24
B. 12
C. 6
D. 18
Answer: B
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In the third stage of aerobic respiration, _____ is the final acceptor of electrons
a. water c. oxygen b. hydrogen d. NADH
What cells in nervous tissue carry electrical signals?
A. neurons B. Schwann cells C. myelins D. neuroglia E. synapses
Which type of injury is treated first with an ice pack and later with a heating pad?
a. carpal tunnel syndrome b. a joint dislocation c. a joint sprain d. sublaxation e. torn muscle
During the nineteenth century, sea otters were hunted almost to the point of extinction. When the number of sea otters became very low, it was noticed that the ecosystem of kelp bed "forests" was also disappearing
It was discovered that the sea otters were predators of sea urchins, which were, in turn, predators of the kelp. When sea otters declined, the sea urchin populations grew, destroying the kelp ecosystem and the many species that depended on it. What role did sea otters perform in this ecosystem? A) competitors B) producers C) a keystone species D) parasites