In RNA, adenine binds to:
a. guanine
b. thymine
c. uracil
d. cytosine
C
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A/An ____________________ is a malignant tumor that originates in glandular tissue
Fill in the blank(s) with correct word
The challenges our bodies face in defending cells against mutations include all the following EXCEPT
A) some are more severe than the body can fix. B) the frequency of the encounter with the carcinogen can overwhelm the body's defenses. C) the body's defenses become inactive in response to the carcinogen. D) the number of natural killer cells can be reduced by stressors, such as tobacco.
Smokeless tobacco is a safe form of tobacco.
Answer the following statement true (T) or false (F)
The ability of the heart, lungs, and blood vessels to supply oxygen to skeletal muscles during sustained physical activity is
A) muscular endurance. B) cardiorespiratory fitness. C) aerobic capacity. D) physical strength.