In this depiction of transcription, the __________
strand is __________ because it __________.
a. upper; RNA; is single-stranded.
b. lower; RNA; contains uracil.
c. lower; RNA; contains thymine.
d. upper; RNA; has no uracil (U).
e. lower; DNA; contains adenine (A).
Answer: b
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Rods in the eye are used for
A. dim light vision B. bright color vision
In unwound chromatin, nucleosomes are organized into large coiled loops held together by:
a. histones. b. centromeres. c. kinetochore proteins. d. scaffolding proteins. e. condensins.
A diploid individual with two identical alleles for a particular gene is said to be:
a) autosomal for that gene. b) codominant for that gene. c) pleiotropic for that gene. d) homozygous for that gene. e) heterozygous for that gene.
Passive transport across a membrane refers to
a. transport into the interior of a cell. b. transport out of a cell. c. transport in the energetically favorable direction. d. simple diffusion across membranes, without the help of proteins such as channels or carriers.