Proteins
A) are involved in almost every important function performed by a cell.
B) comprise more than 50% of the dry weight of a cell.
C) are composed of a string of nucleotides.
D) are characterized by a 1:2:1 ratio of carbon to hydrogen to oxygen.
E) are involved in almost every important function performed by a cell AND comprise more than 50% of the dry weight of a cell.
Correct Answer:
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Q23: Water-soluble substances easily pass through the phospholipid
Q25: Steroids are simple lipids.
Q39: The positively charged component of the atom
Q40: The sugars found in nucleic acids consist
Q41: Amino acids in proteins are linked to
Q43: A protein
A)assumes any number of equally functional
Q44: The most important molecule(s)in the world is(are)
A)water.
B)protein.
C)carbohydrates.
D)nucleic
Q45: Side chains are important to proteins because
Q46: The characteristic common to all lipids is
Q47: The purines of DNA are
A)adenine and guanine.
B)thymine
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