An energy barrier
A) is the amount of energy that must be produced by the reactants to end a chemical reaction.
B) is higher than the activation energy of a reaction.
C) prevents the spontaneous breakdown of molecules in the cell.
D) can only be overcome with the use of enzymes.
Answer: C
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Fill in the blank(s) with the appropriate word(s).
Amino acids in proteins are linked to one another by peptide bonds between the
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a. internal organs. b. skin. c. joints. d. tendons. e. all of these.
Two parents with type A blood have a child who is type O. The parents' genotypes must be
____________________ and ____________________ or they must have the ____________ phenotype. Fill in the blank(s) with the appropriate word(s).