Which of these methods of heat transfer is not relevant to biological systems?
A. radiation
B. conduction
C. convection
D. evaporation
E. reflection
E. reflection
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The technique that allows one to record ion currents passing through individual channels is known as
A) voltage-gating. B) ligand-gating. C) patch-clamping. D) ion sensors. E) ionophores.
Four of the five answers below are factors that contribute to strong fossil records of certain species. Select the exception
a. persisted for a long time b. hard body parts c. concentrated in one geological area d. lived in dense populations e. widespread distribution
Which of the following is NOT true about
restriction enzymes?
a. Restriction enzymes recognize specific DNA sequences. b. Restriction enzymes cut DNA independently of its origin. c. Restriction enzymes recognize specific nucleotide sequences. d. Restriction enzymes cut RNA or DNA sequences at specific sites. e. More than one of these is NOT true.
Which of the following secondary structures may be a DNA-binding domain?
A) Zinc finger B) Leucine zipper C) Helix-turn-helix D) A and B only E) A, B, and C