All sterols have
A) the same number of double bounds.
B) double bonds in the same positions.
C) four rings of carbon to which are attached other atoms.
D) the same functional groups.
E) the same number and positions of double bonds.
Correct Answer:
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Q65: Proteins may function as
A)structural units.
B)hormones.
C)storage molecules.
D)transport molecules.
E)all
Q80: Which of thfollowing carbohydrates is thmost abundant
Q81: Which of thfollowing sugars is founin RNA
Q82: Which of thfollowing is a monomer of
Q83: Secondary protein structuris dependent on
A)hydrophobic interactions.
B)hydrogen bonds.
C)bonds
Q84: Nucleotides contain what kinof sugars?
A)three-carbon
B)four-carbon
C)five-carbon
D)six-carbon
E)seven-carbon
Q86: Cell membranes archaracterizeby thpresencof
A)triglycerides.
B)phospholipids.
C)unsaturated fats.
D)steroids.
E)saturated fats.
Q87: What kinof bonexists between two amino acids
Q88: Macow diseasis causeby
A)viruses.
B)prions.
C)infectious bacteria.
D)parasites.
E)all of these.
Q89: How many levels of protein structures exist?
A)1
B)2
C)3
D)4
E)5
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