Some bacteria have been found to have much higher rates of mutation than other members of their population; they are termed "mutators." What do you think is the most likely reason for their higher rates of mutation?
A. They have much smaller genomes than regular bacteria.
B. They are incapable of bacterial transformation.
C. Their DNA polymerase has compromised 3’ to 5’ exonuclease function.
D. Their DNA polymerase has compromised 5’ to 3’ polymerase function.
E. All choices are equally likely to lead to higher rates of mutation.
C. Their DNA polymerase has compromised 3’ to 5’ exonuclease function.
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Leeches belong to the phylum
(a) Arthropoda. (b) Mollusca. (c) Annelida. (d) Cnidaria
Why are carbon-based organic compounds, such as C6H12O6 (glucose), often referred to as "energy molecules"? Select all that apply
A. Energy is released when carboncontaining compounds are broken down. B. Energy is stored in carbon-containing organic compounds. C. Energy is required to build carboncontaining organic compounds. D. None of the aboveâ€"carbon-containing organic compounds and energy are not related.
Some types of dinoflagellates (single-cell eukaryotes) show a circadian rhythm. They produce light for about 12 hours in the dark (at night) and photosynthesize for about 12 hours in the light (during the day)
Say you took some dinoflagellates at the end of their 12 hours of darkness and put them on a 24-hour light cycle. How would the cells likely respond during the first day of that cycle? A. The cells would photosynthesize for the full 24 hours. B. The cells would photosynthesize for more than 12 hours but less than the full 24 hours. C. The cells would produce light for the full 24 hours. D. The cells would not produce light or photosynthesize.
Lemurs are in the suborder:a
Tarsiformes b. Prosimii c. Anthropoidea d. Hominoidea e. Pithecinae