Assume that the shaded portions of the molecule in the accompanying figure each represent different polypeptide
chains. What does this represent?
a. cellulose
b. a carotenoid
c. an amino acid
d. a steroid hormone
e. the quaternary structure of a protein
e
Biology & Microbiology
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MHC plays a pivotal role in transplant rejection
Indicate whether this statement is true or false.
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Which of the following elements is considered an essential micronutrient for plants?
a. calcium b. lithium c. sulfur d. nickel e. oxygen
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In terms of public health, the major lethal effect of smoking is ________
A) lung cancer B) oral-facial cancer C) peptic ulcers D) cardiovascular disease
Biology & Microbiology
Where is glucose synthesized during photosynthesis?
A) Matrix B) Stroma C) Thylakoids D) Membrane proteins E) Cytoplasm
Biology & Microbiology