Gram ________ bacteria stain purple and have a very simple cell wall, only consisting of peptidylglycan:
A. Positive
B. Negative
Ans: A. Positive
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How does the organization of the bacterial genome differ from the organization of the eukaryotic genome?
A. The compaction of the eukaryotic genome involves structural maintenance of chromosome (SMC) proteins, and the compaction of the bacterial genome does not. B. Most bacterial chromosomes are circular and the eukaryotic chromosomes contained in the nucleus are not. C. Bacterial chromosomes are made up of RNA and eukaryotic chromosomes are made up of DNA. D. The eukaryotic genome is found on chromosomes and there are no chromosomes in bacterial cells. E. Eukaryotic chromosomes have to be tightly packed to fit into the nucleus, and bacterial chromosomes do not require tight packing to fit into the cell.
Because there was no previous history of hemophilia in Queen Victoria's family, and because she transmitted the mutant allele to a number of her children, it is reasonable to assume that ____
a. her father was homozygous for the disorder b. her mother was homozygous for the disorder c. her sister was a heterozygous carrier d. she was homozygous for the disorder e. she was a heterozygous carrier
Breathing that stops briefly and then resumes spontaneously is called
a. apnea. b. tachypnea. c. bradypnea. d. pneumotaxia. e. hyperventilation.
Why is a very low level of body fat unhealthy in young women?
A) Women need a certain amount of fat to maintain their fertility. B) Reduced levels of body fat make a woman unable to expend any energy. C) Women with very low body fat have an increased risk of developing diabetes. D) Women with very low body fat have an increased risk of heavy menstrual bleeding.