Rubisco has 16 subunits joined together to make a functional unit. Eight of the subunits are large, the other 8 are
small. What is the function of the small subunits?
a. The small subunits contain the reactant binding sites.
b. They stabilize the overall enzyme's structure but have no intrinsic function.
c. The function of the small subunits is still unknown.
d. They regulate the enzyme's rate of catalysis.
e. The small subunits contain allosteric regulator binding sites.
ANSWER: d
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Which modification of the terminator region of a gene would specifically prevent rho-independent termination?
A. Change in the adenine-rich sequence of nucleotides of the terminator region. B. Change in the rut binding site. C. Change in the adenine-thymine sequence of the Pribnow box. D. Change in the sequence that encodes the mRNA leader.
What was the average number of spots at the start of all your experiments?
a. 2.0 b. 3.0 c. 4.0 d. 5.0
Which term best describes the structure that is necessary for facilitated diffusion?
a. a receptor protein b. a pore c. a signal protein d. a carrier protein
Imagine meiosis in a diploid organism that only has a single chromosome. Like most diploid organisms, it received one copy of this chromosome from each of its parents and the two homologs are genetically distinct
If only a single homologous recombination event occurs during meiosis, which of the following choices below correctly describes the four gametes formed. (a) None of the gametes will contain chromosomes identical to the chromosomes found in the original diploid cell. (b) All four of the gametes will have chromosomes identical to the chromosomes found in the original diploid cell. (c) Three of the gametes will have chromosomes identical to the chromosomes found in the original diploid cell, while one of the gametes will have chromosomes that are different. (d) Two of the gametes will have chromosomes identical to the chromosomes found in the original diploid cell, while two of the gametes will have chromosomes that are different.