Lyme disease is an example of a disease
A. that is due to a greater degree of interaction between humans and tick-carrying animals.
B. that is due to a decline in vaccinations.
C. that is due to a mutation in the human genome.
D. that is due to climate change leading to a greater mosquito population.
A
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Which of the following is incorrect about prophages?
A. Replicated with host DNA and passed on to progeny B. Occur when temperate phages enter host cells C. Cause lysis of host cells D. Present when the virus is in lysogeny E. Formed when viral DNA enters the bacterial chromosome
Which of the following best describes a chemoreceptor response to PO2?
A) Peripheral chemoreceptors respond to oxyhemoglobin. B) Central chemoreceptors respond to only large decreases in PO2. C) Peripheral chemoreceptors respond to small changes in PO2. D) Peripheral chemoreceptors respond only indirectly to PO2. E) Central chemoreceptors do not respond to changes in PO2.
The beginning codon of an mRNA strand to produce a protein is a(n)
A. codon. B. initiator/start codon. C. terminator/stop codon. D. anticodon.
If the wer gene were expressed in every root epidermal cell, the plant would
A. strengthen its attachment to the soil. B. greatly increase its absorptive capacity. C. greatly reduce its ability to exchange gases at the epidermal surface. D. increase in the diameter of its roots. E. greatly reduce its water and nutrient uptake.