The molecule in the accompanying figure is ____, and has ____
a. unsaturated; a carbon-carbon double bond
b. saturated; a carbon-carbon double bond
c. unsaturated; no carbon-carbon double bonds
d. saturated; no carbon-carbon double bonds
e. saturated; a carbon-carbon triple bond
ANSWER: a
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Sequences of DNA assembled by identifying overlaps among smaller DNA segments are known as
A. single strand polymorphisms. B. synteny. C. draft sequences. D. proteome. E. contig.
The parts of the graph indicated at points C, D, and E represent
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A) depolarization.
B) hyperpolarization.
C) the refractory period.
D) repolarization.
E) sodium channel activity.
The most common isotope of carbon has an atomic number of 6 and a mass number of 12, while the
most common isotope of oxygen has an atomic number of 8 and a mass number of 16. A molecule of CO2 made up of these common isotopes has a molecular weight of ____.
a. 28 b. 44 c. 56 d. 14 e. 22
In the dermal tissue, _______ are associated with stoma.
A. Pigment cells B. Collenchyma cells C. Trichomes D. Epidermal cells E. Guard cells