Prokaryotic chromosomes do not have telomeres because they _____________.
a) do not go through cell division
b) do not have DNA replication
c) are circular
d) use RNA instead of DNA as their genetic material
Ans: c) are circular
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All of the following are capable of reproducing by parthenogenesis except
A) bees. B) Komodo dragons. C) parasitic wasps. D) kangaroos. E) scorpions.
What percentage of the surface of the earth is covered by seawater?
a. 46% b. 55% c. 64% d. 71% e. 83%
Which of the following organelles are endosymbionts of eukaryotic cells?
a. Golgi body b. nucleus c. lysosome d. peroxisome e. mitochondria
Most of our nitrogen-containing waste products are a result of __________.
a. drug use b. consumption of foods high in nitrates, such as green vegetables c. protein metabolism d. the body's attempts to maintain pH homeostasis e. metabolism of fatty foods