Hydrogen bonds formed within the backbone of a protein contribute to the ___________ structure of insulin
a. primary and secondary
b. secondary and tertiary
c. tertiary and quaternary
d. secondary, tertiary, and quaternary
b
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If an organism is dorsoventrally flat, found in the marine environment and with vibrant colors, it is probably a Phylum Platyhelimenthes.
A-true B-False
At birth, the baby passes from the uterus to the outside of the mother's body through the ____
a. oviduct b. urethra c. ovary d. vagina e. vulva
The diameter of a blood vessel will be reduced by the contraction of ________
a. cardiac muscle b. smooth and cardiac muscles c. skeletal and cardiac muscles d. smooth muscle e. skeletal muscle
The average number of children born to a woman during her lifetime is known as:
a. age structure. b. replacement-level fertility. c. natality. d. total fertility rate. e. infant mortality rate.