A person with O negative blood has what antigens on his or her red blood cells?
A. A only
B. B only
C. none
D. B and Rh
E. A and Rh
Answer: C
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Eukaryotic telomeres replicate differently than the rest of the chromosome. This is a consequence of which of the following?
A) the evolution of telomerase enzyme B) DNA polymerase that cannot replicate the leading strand template to its end C) gaps left at the end of the lagging strand D) gaps left at the end of the lagging strand because of the need for a primer E) the "no ends" of a circular chromosome
Export of RNAs from the nucleus occurs primarily by
a. passive diffusion through nuclear pore complexes. b. cotranscriptional insertion through nuclear envelope membrane protein pores. c. selective transport through nuclear pore complexes in association with proteins. d. release from the nucleus when it breaks down at mitosis.
During meiosis II
A) sister chromatids exchange parts. B) sister chromatids of each chromosome are separated from each other. C) homologous chromosomes synapse. D) cytokinesis results in the formation of a total of two cells. E) homologous chromosomes separate.
Which of the following can be the final electron acceptor in anaerobic respiration in bacteria?
A) nitrate only B) pyruvic acid only C) sulfate only D) both nitrate and sulfate E) nitrate, pyruvic acid, and sulfate