Which option lists the sequence of events in the cell-signaling process in the correct order?
A) reception, response, signal transduction
B) signal transduction, reception, response
C) signal transduction, response, reception
D) reception, signal transduction, response
Answer: D
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Cell plate formation
(a) occurs in plant cells but not in animal cells. (b) usually begins during telophase. (c) is a result of fusion of Golgi vesicles. (d) is all of the above.
Blue flower color (B allele) is dominant to white (b allele). In a population plants with white flowers (bb) are at a frequency of 0.04. What frequency of the alleles are for blue flower color (B)?
A. 0.04 or 4% B. 0.16 or 16% C. 0.06 or 60% D. 0.8 or 80% E. 0.96 or 96%
What is the function of the lacY gene in the lac operon?
What will be an ideal response?
Lenski and Travisano compared what happened to the size of cells in 12 replicate lines of E. coli. The results of the experiment graphed in the figure above indicate that:
a. there is a competition for limited resources in nature. b. the average cell volume decreased substantially over the first 2,000 to 3,000 generations of the experiment. c. the average cell volume increased substantially over the first 2,000 to 3,000 generations of the experiment. d. A and B. e. A and C.