Which of the following levels of protein folding would include shapes identified as helix and pleated sheet?

a. primary structure
b. secondary structure
c. tertiary structure
d. quaternary structure


Answer: b. secondary structure

Biology & Microbiology

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The central column of conductive tissue in the root system is known as a(n) ________

a. vascular cylinder b. endodermis c. epidermis d. root cortex e. pericycle

Biology & Microbiology

Why is investigating evolutionary relationships by comparing gene sequences more precise than comparing body forms? How do the two methods compare if we consider divergent and convergent evolution?

What will be an ideal response?

Biology & Microbiology

Which of the following is INCORRECT concerning

Radiolarians? a. They have perforated shells of calcium carbonate. b. They form part of the plankton. c. They use pseudopods for feeding. d. They have vacuoles that impart buoyancy. e. They are heterotrophic protists.

Biology & Microbiology

The more electronegative an atom, the greater the pull its nucleus exerts on ________

a. protons b. electrons c. neutrons d. the electromagnetic fiel

Biology & Microbiology