Which of the following could be considered a reactant used during the light-dependent reactions, but a product made during the Calvin cycle?
a. ATP
b. NADPH
c. NADP+
d. oxygen
c. NADP+
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How are B-cell receptors different from T-cell receptors?
a. B-cell receptors bind antigen, while T-cell receptors do not. b. B-cell receptors have a more complex structure. c. B-cell receptors have a more simple structure. d. B-cell receptors are bound to the cell membrane, while T-cell receptors are bound to the nuclear membrane. e. B-cell receptors stimulate the production of a clone of cells.
Oxygen, carbon dioxide, and other small molecules cross the plasma membrane through the process of ____
a. diffusion b. osmosis c. endocytosis and exocytosis d. active transport e. facilitated diffusion
Viral growth in bird embryos can cause discrete, opaque spots in the embryonic membranes called ________.
A. patches B. cytopathic effects C. buds D. pocks E. plaques
A rich source of vitamin E is
a. oranges. b. chicken breast. c. corn oil. d. prime rib.