What happens when the cAMP-CAP complex binds the CAP site near the lac promoter?
A. RNA polymerase binds to the promoter and transcription rate decreases.
B. Transcription rate decreases.
C. Transcription rate increases.
D. RNA polymerase binds to the promoter.
E. RNA polymerase binds to the promoter and transcription rate increases.
Answer: E
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Which of the following observations is not part of natural selection as posed by Darwin?
A. Individuals within a population differ in terms of reproductive success. B. Individuals within a species exhibit variation. C. Organisms compete for available resources. D. Organisms become adapted to conditions as the environment changes. E. All of these observations are part of natural selection as posed by Darwin.
Cells are activated by the binding of their antigen and interaction with _____ cells.
A. helper T cells B. cytotoxic T cells C. macrophages D. natural killer cells
Giardia's mitosome can be said to be "doubly degenerate," because it is a degenerate type of ________, an organelle that is itself a degenerate form of ________
A) nucleus; archaean B) nucleus; bacterium C) mitochondria; proteobacterium D) mitochondria; spirochete
Semifluid medium of the nucleus containing chromatin.
What will be an ideal response?