The pleating or coiling of a protein is known as the protein's ____ structure.
A. primary
B. secondary
C. tertiary
D. quaternary
B. secondary
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Single-cell genomics may help us
A) predict which microbes will be abundant based on the environmental conditions. B) understand the physiology of uncultured microbes. C) develop better enrichment culture methods. D) understand the physiology of uncultured microbes and develop better enrichment culture methods.
Removing plants from an area, as we do when we harvest crops, removes a great deal of nitrogen. One of the ways farmers enable soils to naturally recover is:
A. adding human made fertilizer. B. planting the field with legumes. C. adding bacteria to the soil. D. leaving the soil bare, removing any plants that would consume nitrogen.
As regards the immune system, older people are more likely to develop
a. common colds. b. warts. c. stronger immune responses. d. an increased risk of AIDS. e. autoimmune diseases.
Which of the following is a defining characteristic of comparative morphology?
a. It compares the anatomical structures of organisms. b. It compares the similarities of organisms. c. It compares the differences of organisms. d. It compares the similarities and differences of organisms.