The primary structure of a protein
A) is important for determining the secondary and tertiary structure of a protein.
B) is simply the order of amino acids from one end of the protein to another.
C) is important both genetically and structurally.
D) is the linear sequence of amino acids that are linked together by peptide bonds.
E) all of the above
E) all of the above
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One important adaptation of mammals is hair growing out of the skin for retaining heat. How does hair help mammals retain heat?
a. Hair increases the surface area exposed to the sun, capturing more heat from the environment. b. Hair covers the body like a coat, keeping out the cold and stopping evaporative cooling. c. Hair traps a boundary layer of air close to the body, retaining heat generated by metabolic processes. d. Hair’s dark color captures more light, and light is energy, allowing mammals to capture energy to heat the body.
Seawater typically has an osmolarity of
a. ~5 mOsm/L. b. ~225 mOsm/L. c. ~300 mOsm/L. d. ~1000 mOsm/L. e. ~1500 mOsm/L.
What is the key difference in defining "obese" and defining "overweight"?
A) An obese person always carries weight as excess muscle. B) An obese person always carries weight as excess fat. C) An overweight person always carries weight as excess fat. D) The two terms mean the same thing.
An available quadrivalent or nine-valent vaccine protects against infection by
a) HSV type 1. b) HSV type 2. c) HIV. d) HPV.