Some researchers argue that short telomeres actually facilitate a longer life span in mammals. The reasoning for this argument includes the idea that ________
A) the activity of telomerase expression?the enzyme that can restore lost bits of telomeres?is repressed
B) a reduction in the telomere size for every DNA replication event can serve as an accurate counting mechanism for the number of times a cell has divided
C) reducing the number of divisions a cell will go through will also reduce the likelihood of mutation events occurring in the cell's DNA
D) All of the above are included in this idea.
D
You might also like to view...
The unique characteristic of Lyme disease is
A. erythema migrans. B. induration. C. carbuncle. D. furuncle.
Which of the following is likely to be true, based on the following cladogram?
1.Amphibians and lungfishes are sister groups.
2.Amphibians and amniotes both have four limbs and a swim bladder or lungs.
3.Amphibians and lungfishes both have four limbs and a swim bladder or lungs.
4.All of the groups listed have a backbone and a skull.
A human host can prevent a pathogen from getting enough iron by all of the following except
a. reducing dietary intake of iron. b. binding iron with transferrin. c. binding iron with hemoglobin. d. binding iron with ferritin. e. binding iron with siderophores.
The term for the use of microorganisms to restore damaged environments is
A) epidemiology. B) bioremediation. C) chemotherapy. D) serology. E) ecology.