Enzymes work by ______ the activation energy required for a reaction to occur.
a. raising
b. lowering
c. keeping constant
d. Enzymes don’t affect the activation energy of a reaction.
b. lowering
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All EXCEPT which of the following is true
about chlamydia? a. It is the most common bacterial STD. b. It can be passed on from mother to child. c. Most infected males are undiagnosed because they have no symptoms. d. It can be treated with antibiotics. e. Untreated males risk infertility
The chemical bonds in DNA by which the sugar components of adjacent nucleotides are linked are called
A. hydrogen bonds. B. peptide bonds. C. phosphodiester bonds.
Scientists believe that stimulating the growth of algae and other organisms can reduce carbon dioxide amounts in the atmosphere. Where is carbon dioxide consumed in a plant cell?
A. matrix in mitochondria B. central vacuole C. number of amyloplasts D. cellulose in cell wall E. stroma in chloroplasts
The (active/allosteric/substrate) sites of an enzyme can be used to regulate enzyme activity within a cell, and thereby control their metabolism.
Fill in the blank(s) with the appropriate word(s).