Which organic molecules have a chemical formula that is (or is very nearly) a multiple of (CH2O)?
a. proteins
b. lipids
c. nucleic acids
d. carbohydrates
e. amino acids
D
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Use the formulas N = N02n and g = t/n. N = final cell number, N0 = initial cell number, n = number of generations, t = time, g = generation time. Find the generation time if N = 2 à— 108, N0 = 3 à— 106 and t = 3 hours
What will be an ideal response?
The Proteobacteria group contains:
A. bacteria species with similar rRNA sequences. B. anoxygenic photosynthetic bacteria. C. E. coli and salmonella. D. nitrogen-fixing bacteria. E. All of these answer options are correct.
During his trip on the Beagle, Darwin found that ________
A) plants and animals living in temperate regions were most similar to each other, regardless of the continent on which they were found B) plants and animals living on a continent seemed more closely related to each other than to plants and animals living in similar regions on other continents C) fossils found on a particular continent were clearly not related to the plants and animals living on that continent today D) plants and animals were similar on every continent and in every type of region
Which of the following describes a polysome?
a. the combination of a large and a small ribosome subunit b. an mRNA with multiple ribosomes attached c. the assembly at a promoter at the start of transcription d. the complex where mRNA splicing occurs