In general, which of the following is (are) largely responsible for moving substances across the plasma membrane, communicating with other cells, and identifying the cell?
A) Carbohydrates
B) Proteins
C) Nucleic acids
D) Phospholipids
E) Cytoskeleton
B
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A common medium for culturing fastidious bacteria is ________.
A. reducing medium B. blood agar C. trypticase soy agar D. mannitol salt agar E. MacConkey medium
When phylogenies are created based on the similarities and differences of species’ DNA sequences, this classification system is known as which of the following?
a. cladistics b. phylogenetics c. taxonomy d. molecular systematics
The seasonal cessation of activities accompanied by a reduction in metabolism in response to cold temperatures during winter is called
A) hibernation. B) torpor. C) heterothermy. D) diapause.
Why are there more tissues available for transplant than organs?
A) Tissues can be transplanted regardless of blood type, but the blood types must match between organ donors and recipients. B) Nonhuman animals are the source of most tissue transplants, but organs for transplant must come from humans. C) Tissues can be removed from living donors, whereas organs can only be removed from dead bodies. D) Tissues can be frozen and preserved, but organs deteriorate quickly without nourishment from oxygen and blood.