Choose the description below that best matches the current model of RNA polymerase holoenzyme.
A. A core enzyme composed of five polypeptides bound by ribosomes.
B. A core enzyme composed of five polypeptides bound by a transcription factor.
C. A core enzyme composed of five sigma factors bound by a polypeptide chain.
D. An open complex or "bubble" formed by DNA, mRNA, and RNA polymerase.
Answer: B
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Converting 1 molecule of glucose to 2 pyruvate molecules generates the net formation of this many ATP during cellular respiration:
A. 6 molecules of water B. 3 molecules of ATP C. 2 molecules of ATP D. 72 - 76 molecules of ATP E. 36 - 38 molecules of water
Which of the following organisms is not normally found on the skin?
A. Staphylococci B. Diptheroids C. Candida spp. D. Malassezia spp.
Which of the following statements best defines an altruistic act?
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Which process involves vesicular fusion with many lysosomes?
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