The binding of arabinose to the AraC protein allows it to form a loop in the DNA upstream of the ara operon promoter.
Answer the following statement true (T) or false (F)
False
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Huntington disease in humans is an example of a(n) ____________
A. essential gene B. lethal allele C. semilethal allele D. nonessential gene E. conditional lethal allele
Classical conditioning such as the salivating of Pavlov's dog in response to a metronome is based on a(n)
A. operant condition. B. sign stimulus. C. involuntary response. D. dishabituation. E. None of the choices are correct.
Which of the following structures is NOT an example of an organ?
a. cartilage b. blood vessels c. the brain d. the heart e. the stomach
DNA polymerase
a. is an enzyme. b. adds new sugars to a strand. c. proofreads RNA strands to see that they are correct. d. unwinds the DNA molecule during repair. e. is made of uracil.