You conduct an experiment in which you inactivate Ras proteins in fibroblast cells. Which of the following is the most
immediate consequence of this procedure?
a. The fibroblasts divide uncontrollably.
b. The fibroblasts synthesize excess DAG.
c. The fibroblasts synthesize excess G protein.
d. The fibroblasts no longer respond to calmodulin.
e. The fibroblasts no longer synthesize DNA in response to growth factors
e
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What is the number of tRNA molecules that may be associated with translation?
A. 16 B. 20 C. 64 D. Fewer than 64
The temperature at which one DNA molecule separates from the other DNA molecule in a double strand is called the ________ temperature.
A. mobilization B. destabilizing C. melting D. separation
During signal transduction of a G protein, the first messenger binds to the receptor, and the G protein is activated
What happens next? a. formation of cAMP b. cellular response c. activation of protein kinase d. activation of adenylyl cyclase e. phosphorylation of the G protein
Natural selection acts directly on the genotype of an organism
_______ Indicate whether the statement is true or false.