The Calvin cycle requires all of the following except
A. NADPH.
B. carbon dioxide.
C. ATP.
D. water.
E. oxygen.
Answer: E
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The active site of an enzyme
a. binds the reactants of a chemical reaction. b. does not change shape during the reaction. c. is necessary for regulation of the enzyme activity. d. can bind many different reactants. e. only acts when it is unoccupied.
Cell-mediated immunity in part protects against __________.
A) normal cells of the host, producing the cell-mediated immunity B) bacteria free in body fluids C) intracellular bacteria and viruses D) viruses free in body fluids E) toxins
All the potentially interacting species in an ecosystem are said to make up a(n) ________
Fill in the blank(s) with correct word
This figure shows horizontal gene transfer and the early evolution of life. By this diagram, order the following events:
A. Mitochondrial horizontal gene transfer B. Chloroplast horizontal gene transfer C. Single-cell eukaryotes lacking mitochondria break off from all other eukaryotes D. Plants and algae separate from animals and fungi E. Fungi separate from animals What will be an ideal response?