The key elements of a PCR reaction are ____
a. the four nucleoside triphosphates, DNA primase, DNA polymerase, and an agarose gel
b. a pair of primers, the four nucleoside triphosphates, DNA primase, and DNA polymerase
c. DNA with the target sequence to be amplified, the four nucleoside triphosphates, DNA primase, and DNA
polymerase
d. DNA with the target sequence to be amplified, a pair of primers, the four nucleoside triphosphates, and DNA
primase
e. DNA with the target sequence to be amplified, a pair of primers, the four nucleoside triphosphates, and DNA
polymerase
ANSWER: e
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Which branch of biology examines the form and variety of organisms in their natural environment?
a. taxonomy b. natural history c. comparative morphology d. biogeography
e. geologyWhich statement about genetic diversity is true?
a. Genetically diverse species are more likely to adapt and evolve. b. A genus with similar looking species has the highest potential to evolve. c. Genetic diversity refers to the variety of metabolic compounds in an ecosystem. d. Genetic diversity is positively correlated with latitude for most species.
Which of the following processes is the transfer of heat from a body to a fluid that passes over its
surface?
a. conduction b. radiation c. evaporation d. convection e. radiative cooling
If a membrane is impermeable to water, the flow in and flow out will both be zero
a. True b. False