The enzyme telomerase is essential for unlimited cell division because
A) it is essential for DNA replication initiation at origins of replication.
B) a lack of telomerase will result in chromosome shortening and cell death.
C) it is essential for kinetochore attachment to the spindles.
D) a lack of telomerase results in decreased p53 activity.
B) a lack of telomerase will result in chromosome shortening and cell death.
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The "scientific creationism" view includes all of the following beliefs except that
A. biblical account of the origin of the earth is literally true. B. the earth is much younger than most scientists believe. C. all species of organisms were individually created. D. the organisms did not change from their original appearance. E. extinct species are replaced with new ones.
When O2 accepts electrons in aerobic respiration, it is converted to ____
a. O3 b. CO2 c. OH d. H2O e. CO
The differences in concentration of which pair of ions produces the resting membrane potential?
a. sodium and potassium b. sodium and chloride c. potassium and chloride d. chloride and calcium e. calcium and sodium
Which of the following serves as an "adapter" in protein synthesis and bridges the gap between mRNA
and proteins? a. tRNA b. cDNA c. rRNA d. promoter sequences e. DNA