Which of the following statements is NOT generally
characteristic of parasites?
a. They are specialists and usually are able to
affect only one variety of hosts.
b. They inflict serious injury and kill their hosts.
c. Some reside inside their hosts, whereas others
live outside their hosts.
d. Their host may be a plant as well as an animal.
e. Some require more than one host to complete the
life cycle.
Answer: b
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How would the population equation G = rN be expressed in the full names of each abbreviated variable?
A. rate of emigration = birth rate x initial population size B. None of the answer choices is correct. C. logistic growth rate = per capita rate of increase x carrying capacity D. number of individuals added during any time interval = per capita rate of increase x initial population size E. carrying capacity = environmental resistance x exponential growth rate
DNA and RNA are alike in
a. the pentose sugar. b. all the nitrogenous bases used to assemble the genetic code. c. the number of strands. d. their function in genetics. e. none of these.
Muscle cells are stimulated by acetylcholine released from the terminals of
A. transverse tubules. B. motor neuron axons. C. sensory cell axons. D. motor neuron dendrites. E. sensory cell dendrites.
Chromosomes are duplicated during what
stage of the cell cycle? a. M b. D c. G1 d. G2 e. S