The genetic code is made up of codons consisting of
how many nucleotides?
a. 2
b. 3
c. 5
d. 6
e. 9
Answer: b
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Which of the following characteristics of the glmS riboswitch is also true of the TPP riboswitch?
A. The glmS riboswitch is a ribozyme. B. The structure of the riboswitch is the same, whether bound by ligand or not. C. The riboswitch lowers the rate of translation when bound to its metabolite ligand.
Answer the following statements true (T) or false (F)
1. All enzymes are proteins. 2. Because of the abundance of ribosomes, translation is NOT an energy costly process for the cell. 3. The cells of every organism make only a few different tRNA molecules encoded by the same gene. 4. In eukaryotes, 40S and 60S combine to form a 100S ribosome.
Which vitamin helps older women retain calcium and diminish bone loss?
a. A b. D c. C d. B12 e. K
Mutations that inhibit the function of photosystem I but not photosystem II would result in a plant cell that could still generate ______.
A. produce O2, ATP, and NADP+ B. produce ATP and NADP+ C. produce O2, ATP, and NADPH D. produce ATP and NADPH E. produce CO2 and ATP