When the Catabolite Activator Protein binds to its binding site in DNA, it
A. bends the DNA.
B. eliminates the need for a sigma factor on the part of RNA polymerase.
C. promotes the assembly of other transcription factors at the promoter.
D. displaces repressors.
Answer: A
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The point of constriction on chromosomes that contains certain repeated DNA sequences that bind specific proteins is called:
A. The kinetochore B. The centromere C. The cohesin complex D. The centriole E. The centrosome
A(n) ____ is created as ions diffuse across membranes
a. chemical gradient b. electrochemical gradient c. negative gradient d. electrical gradient e. concentration gradient
An animal learns to associate its behavioral response with a reward or punishment in
A. behavioral learning. B. classical conditioning. C. deviant behavior. D. operant conditioning. E. imprinting.
Which of the following is not predicted by a Punnett square?
1.the expected genotypic ratio of the offspring 2.the expected phenotypic ratio of the offspring 3.the number of offspring that will result 4.none of these; all are predicted