The main danger from deep vein thrombosis is ____
a. a clot breaking loose and moving elsewhere in the body
b. unsightly veins
c. loss of blood flow in the extremities
d. blood pooling below the heart
e. a clot dispersing without warning
ANSWER: a
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In mammalian cells, replication proceeds
A) unidirectionally B) bidirectionally. C) unidirectionally from many origins. D) bidirectionally from a single origin.
A consequence of asexual reproduction in a plant is that __________.
A. gametes are produced in large numbers B. a partner is needed for reproduction C. pollen dispersal is critical to survival D. its entire genetic legacy can remain intact
While some animals, such as birds, reproduce sexually, others, such as sponges, produce asexually. Why is it beneficial for a species to reproduce sexually instead of asexually?
A) Sexual reproduction results in offspring that have twice as many chromosomes as the parents, while asexual reproduction produces offspring that have half the number of chromosomes as the parent. B) Sexual reproduction requires less time and energy than asexual reproduction. C) Sexual reproduction results in offspring that are genetically identical to the parents, while asexual reproduction results in offspring that are genetically different from the parent. D) Sexual reproduction results in offspring that are genetically different from the parents, while asexual reproduction results in offspring that are genetically identical to the parent.
Which of the following medications is/are specific treatments for infection with Mycobacterium tuberculosis?
A. methicillin B. isoniazid C. vancomycin D. clindamycin E. methicillin and clindamycin