A protein's _______ structure contains helixes and sheets that result from hydrogen bonding between carboxyl and amino groups of the polypeptide chain.
A. primary
B. secondary
C. tertiary
D. quaternary
E. both secondary and quaternary
B. secondary
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In a small population of alpine foxes, you observe increased ear length over a ten-year period. Can you conclude that increase in ear length is advantageous in this population?
A) Yes B) No
In human males, the conversion of a spermatogonium into a sperm takes about 9 to 10 weeks
Indicate whether the statement is true or false.
If you were asked to genetically modify cows to increase their production of macrophages, you would want to increase the production of
A. lymphocytes. B. basophils. C. eosinophils. D. monocytes. E. neutrophils.
In general, the first signs of puberty occur earlier in life for girls than for boys
Indicate whether the statement is true or false