Which statement 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 immediately.
C. Their presence can weaken a host and make it more vulnerable to predation.
D. Their presence can reduce reproductive fitness.
E. Plants as well as animals can be parasites.
Answer: B
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Hydrophobic interactions:
A. arise from the tendency of nonpolar molecules to exclude water in solution. B. destabilize proteins. C. destabilize the base-stacking interactions of DNA helices. D. occur between molecules having partial charges. E. are a function of the repulsive forces generated when atoms are closer than their van der Waals radii.
An organism that can use energy and inorganic substances to produce all the organic material it requires is a(n)
A. consumer. B. decomposer. C. autotroph. D. secondary consumer. E. heterotroph.
Insects and humans are both categorized as animals. Describe how insects' respiratory system, circulatory system, and digestive system differ from humans.
What will be an ideal response?
Which of the following has flagella that wave back and forth?
A. Bacteria B. Archaea C. Eukarya