An organism of the genus Staphylococcus is ________, while an organism of the genus Spirochaeta is ________
A) spherical / rod shaped
B) rod shaped / coiled
C) spherical / coiled
D) coiled / spherical
Answer: C
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Which one of the following statements about an open reading frame is true?
A. An open reading frame consists a long string of codons. B. An open reading frame is most likely protein coding. C. An open reading frame has no stop codon. D. All of the answer options are correct. E. None of the answer options are correct.
The hypothesis that species diversity is greater at lower latitudes than higher latitudes because low-latitude habitats are older would be supported if:
A. speciation rates were the same at high and low latitudes. B. speciation rates were higher at low latitude than at high latitude. C. speciation rates were higher at high latitude than at low latitude. D. speciation rates were more variable at high latitude than at low latitude. E. speciation rates were more variable at low latitude than at high latitude.
Which of the following vitamins is incorrectly paired with its known function?
a. vitamin C?antioxidant b. vitamin K?essential for blood clotting c. folic acid?coenzyme for synthesis of nucleic acids d. vitamin A?converted to retinal e. panthothenic acid–promotes calcium absorption
The difference between nonhomologous end joining (NHEJ) and homologous recombination is that NHEJ introduces a piece of donor DNA with seamless integration between the chromosome and donor DNA, whereas homologous recombination introduces a frameshift mutation when the repair is made between the broken chromosome ends.
Answer the following statement true (T) or false (F)