In what ways do viruses differ from other pathogens?
A) Viruses lack genetic material.
B) Viruses lack cytoplasm and organelles.
C) Viruses have no protein structure.
D) Viruses are composed of protein only.
E) Viruses are composed of both protein and lipid.
B
Bloom's Taxonomy: Comprehension
Section: Characteristics of Viruses
Learning Outcome: 13.1
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Which of the following groups would be most likely to exhibit uniform dispersion?
A) red squirrels, who actively defend territories B) cattails, which grow primarily at edges of lakes and streams C) dwarf mistletoes, which parasitize particular species of forest tree D) moths, in a city at night E) lake trout, which seek out cold, deep water high in dissolved oxygen
The ability of bacteria to transfer DNA from one individual to another in the same generation is called ________
a. vertical gene transfer b. mitosis c. meiosis d. horizontal gene transfer e. binary fission
Dating to about 3.5 million to 3 million years ago, the famous fossil "Lucy," found in northern
Ethiopia, represents a member of which species?
a. Homo habilis b. Homo erectus c. Australopithecus africanus d. Australopithecus afarensis e. Homo neanderthalensis
Which of the following is part of explaining cancer with the disposable soma hypothesis?
a. Cancer is only caused by mutations in the germ line. b. Despite selection for the most accurate DNA proofreading and repair mechanisms, it is impos-sible to prevent every single mutation. c. There is a trade-off between the number of gametes and the accuracy of genetic transmission in gametes. d. Cancer almost always affects somatic cells.