Which of the following is an application for metagenomics?
a. identifying new species
b. determining drug safety
c. developing new energy sources
d. increasing agricultural production
a. identifying new species
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Why are public health officials concerned about smallpox being used as a biological weapon? Give several reasons in your answer
What will be an ideal response?
Alanine and lysine are both amino acids. Not eating enough lysine can lead to protein deficiency, whereas not eating enough alanine does not lead to protein deficiency. Why is this the case?
A. Alanine can be synthesized by cellular biochemical pathways, whereas lysine cannot. B. Alanine can be easily replaced by other amino acids in protein synthesis, whereas lysine cannot. C. Lysine is needed in much larger quantities for protein synthesis than alanine. D. The body has a more difficult time absorbing lysine than alanine, so more must be consumed to avoid protein deficiencies. E. All of the answer options are correct.
A common application of dry heat in the microbiology laboratory is to
A. prepare specimens for study. B. sterilize media. C. sterilize plastics. D. sterilize the inoculating loop.
Which of the following is found at the 5' end of a DNA strand?
A) a phosphate group B) a hydrogen bond C) a hydroxyl group D) histones E) a methyl group