Which factor allows bacteria species to adapt to environmental changes faster than fish?
A. Smaller size
B. Lack of a nuclear membrane
C. Shorter generation time
D. Smaller nutrient needs
Answer: C
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Two potential devices that eukaryotic cells use to regulate transcription are _____
A) DNA methylation and histone amplification. B) DNA amplification and histone methylation. C) DNA acetylation and methylation. D) DNA methylation and histone modification. E) histone amplification and DNA acetylation.
Which of the following statements about the differences between prokaryotic and eukaryotic genomes is FALSE?
A. Prokaryotic genomes are less complex than eukaryotic genomes. B. Prokaryotic genomes have centromeres, whereas eukaryotic genomes do not. C. Eukaryotic genomes have telomeres, whereas prokaryotic genomes do not. D. Prokaryotic genomes have one origin of replication, whereas eukaryotic genomes have multiple origins of replication. E. Chromosomes of prokaryotes have little repetitive DNA compared with chromosomes of eukaryotes.
Pure water without applied pressure has a water potential that is equal to
A. infinity. B. 0.0 MPa. C. 1.6 MPa. D. -2.0 MPa. E. atmospheric pressure.
Gee's arm was cut during an industrial accident. The blood was pouring from the wound in spurts. Which type of vessel was severed?
A) vein B) artery C) lymphatic vessel D) capillary