Where does human herpesvirus 4 (EBV) become latent?
A. in sensory nerves
B. in B lymphocytes
C. in cytotoxic T lymphocytes
D. in motor nerves
E. in oligodendrocytes
Answer: B
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Organisms that require increased pressure for optimum growth are called
A. osmotolerant. B. osmophilic. C. barotolerant. D. barophilic.
After removing some freshly baked cookies from the oven, you accidentally brush the side of the pan with your bare hand. Your reflexes kick in and you immediately draw your hand away. What is the proximate cause of this behavior?
A. For millions of years, your ancestors survived in part because they avoided damaging heat, and thus were able to pass on heat-avoiding genes to you. B. Drawing your hand away quickly when it encounters high heat prevents injury, thereby increasing your chances to survive and reproduce. C. Sensory receptors in the skin of your hand sent a signal to interneurons in your spinal cord, which subsequently signaled the motor neurons in your arm and hand to contract, drawing your hand away. D. You perceived the heat, judged that it would cause a burn if you left your hand in place too long, and made a conscious decision to pull your hand away.
What are characteristics of the pedigrees of families with mitochondrial diseases?
A) All children of affected mothers are usually affected regardless of their sex. B) Only the male children of affected mothers are affected, female children are not affected. C) Only female children of affected mothers are also affected, male children are not affected. D) All children of affected males are usually affected.
A pyrimidine or purine base that has been joined with a ribose or deoxyribose sugar moiety is now termed a ________.
Fill in the blank(s) with the appropriate word(s).