Which of the following statements about breast cancer is false?
a. Cigarette smoking, obesity, and alcohol use have all been linked to a higher risk of breast
cancer.
b. With early diagnosis and treatment, almost 90% of breast cancer patients survive for five
years.
c. Breast cancer is the leading cause of cancer deaths in women.
d. Growth of about two-thirds of breast cancers is enhanced by circulating estrogens and
progesterone.
e. 10% of breast cancers are familial.
C
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Which of the following bonds do not participate in the stabilization of double-stranded DNA as an energetically preferred structure compared with single-stranded DNA?
A. dipole-dipole interactions B. pi orbital stacking C. van der Waals interactions D. phosphodiester bonds E. hydrophobic base-stacking interactions
The part of the spirochete that houses the cytoplasm and the nucleoid of spirochetes is called the ________ cylinder.
A. cytoplasmic B. ectoplasmic C. mesoplasmic D. protoplasmic
A fruit, such as a strawberry, that develops from tissues of the receptacle as well as the ovary would be considered
a(n) ____.
a. aggregate fruit b. accessory fruit c. multiple fruit d. simple fruit e. compound fruit
Which of the following factors influence the opening
and closing of the stomata? a. rate of photosynthesis b. water availability c. concentration of carbon dioxide in the leaf d. light availability e. all of these