Torque is best defined as:
A. the strength of rotational movement.
B. the strength of a muscle contraction.
C. the distance between the joint and the
load.
D. the distance between the joint and the site
of muscle attachment.
E. the velocity of muscle contraction.
A
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Kin selection is a form of natural selection in which ____
a. dominant individuals share resources disproportionately with their close relatives b. individuals help relatives only if they are likely to return the favor in the future c. group members sacrifice their own reproductive success to help individuals who are not their direct descendants d. shared alleles for altruism are perpetuated if the assisted animals produce more offspring than the helper could have produced if he had not helped e. shared alleles for altruism are perpetuated if the helper produces more offspring than the relatives that he aids
In gymnosperms, the formation of the female gametophyte takes place in the
a. microspores. b. megaspores. c. macrospores. d. ovule. e. rhizomes.
Figure 31.14
The bracket indicated by the letter "A" in the accompanying figure is ____.
A. the epidermis B. a sweat gland C. the dermis D. the hypodermis E. a hair follicle
Aerosols may be involved in ________ transmission of pathogens
A) droplet B) direct C) vector D) fecal-oral E) waterborne