Evaporation exerts tension on the narrow columns of water that fill xylem tubes. The tension occurs because liquid water has ____
a. cohesion due to hydrogen bonds
b. cohesion due to ionic bonds
c. translocation of sugars
d. pressure due to compression within xylem
e. high oxygen content due to soil conditions
a
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In the process of initiation, RNA polymerase and several regulatory proteins bind to a(n) ____________________ that marks the beginning of a gene
Fill in the blank(s) with correct word
Cellular respiration starts in the cytoplasm with the process of
1.glycogenolysis. 2.gluconeogenesis. 3.glycolysis. 4.the Krebs cycle. 5.none of the choices
How are mammographies disadvantageous?
A. They have a low success rate and are incapable of detecting small tumors. B. They involve exposure to radiation, which increases the risk of cancer. C. They cannot detect cysts and fibroadenoma. D. They can detect cancer only in its advanced stages
Phenotypically, a female (XX) mouse embryo that was transformed with a small piece of a Y chromosome bearing the SRY gene would develop as
A) a male. B) a female. C) an intersex individual. D) a male initially, then revert to female after birth. E) a female initially, then revert to male after birth.