The conformational change in opsin triggered by the absorption of light by retinal activates a G protein. What do G proteins do in the cell?
A. G proteins contribute to signal pathways.
B. G proteins influence the activity of other
proteins and enzymes in a cell.
C. G proteins can trigger the synthesis of
second messengers.
D. All the answer options are correct.
D
Biology & Microbiology
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If 15 percent of the nitrogenous bases in a sample of DNA from a particular organism is thymine, what percentage should be cytosine?
A) 30 percent B) 35 percent C) 70 percent D) 15 percent E) 40 percent
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What is the pH of a neutral solution?
A) 1 B) 5 C) 7 D) 9
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Copper (Cu) is considered a micronutrient.
Answer the following statement true (T) or false (F)
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