Jean-Luc Eiselé and his coworkers used ______ receptors in their research on neurotransmitter
receptor function.
a. African clawed frog
b. toad
c. artificial
d. dog
e. human
C
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The extracellular matrix is composed of: (1) proteins; (2) polysaccahrides; (3) nucleic acids
A. Statement (1) is correct. B. Statement (2) is correct. C. Statement (3) is correct. D. Statement (1) and (2) are correct. E. All the statements are correct.
What is a typical characteristic of bacterial chromosomes?
A) On average 5% of the genome encodes proteins. B) It has telomeres. C) It is linear. D) On average a gene occurs once in every 1000 bp. E) It is single-stranded DNA.
The upper layer of the pelagic zone is the
A. benthic zone. B. limnetic zone. C. estuary. D. photic zone. E. continental shelf.
The Gap 1, DNA synthesis, and Gap 2 phases of the cell cycle are collectively called:
a. interphase. b. prophase. c. prephase. d. mitosis. e. anaphase.