In the PCR process, which of the following
molecular bonds of DNA are disrupted at high
temperatures?
a. ionic bonds
b. hydrogen bonds
c. polar covalent bonds
d. nonpolar covalent bonds
e. glycosidic bonds
B
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What role is played by the single-strand binding proteins?
a. stabilizing the helix to prevent supercoiling b. synthesizing RNA primers c. preventing the helix from reforming d. polymerizing DNA
Which of the following items demonstrates radial symmetry?
A) a glove B) a tennis racket C) a pair of sunglasses D) an apple pie
Which of the following is used to sterilize items that should not, or cannot, be exposed to heat or water?
A) ethylene oxide B) formaldehyde C) hydrogen peroxide D) calcium hypochlorite E) triclosan
Photosynthesis enables plants to capture the energy from sunlight. In this essential process, plants incorporate the carbon from CO2 into high-energy __________ molecules, which the plant cell mitochondria use to produce ATP
(a) fat (b) sugar (c) protein (d) fiber