When the directions for a fetal pig dissection refer to the left, they are referring to
(a) your left.
(b) the pig’s left.
(c) the pig’s right.
(d) both a and c.
(b) the pig’s left.
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What is the name of the characteristic that allows water to have a high surface tension?
A) adhesion B) cohesion C) hydrophilic D) hydrophobic
Among explanations for tropical diversity, why does the discussion focus heavily on factors that might be responsible for diversity in tropical plant communities?
A) Most tropical biologists study plants, not animals. B) Animals play insignificant roles in tropical ecosystems. C) The diversity of animals is linked closely to the diversity of plants, so an understanding of plant diversity helps us to understand the diversity of animals as well. D) Flowering plants dominate most tropical ecosystems, and flowering plants have been on earth much longer than animals.
Although asexual reproduction is rapid and efficient, its primary limitation is that _____.
A) each cell must divide individually, leaving the process unusable by multicellular organisms B) genetic information cannot be shuffled into new combinations C) mutations to an organism's DNA are much harder to detect and correct D) a large percentage of any group of offspring may have combinations of features that reduce their chances of survival E) it requires two sets of chromosomes
The patients at greatest risk for severe cytomegalovirus infection include all the following, except
A. AIDS patients. B. organ transplant patients. C. bone marrow transplant patients. D. infants infected in utero. E. individuals with hypertension.