When a photon is absorbed by a pigment (light-absorbing molecule), such as chlorophyll, the energy of the photon is transferred to
A) D1 protein to activate PSII.
B) ATP synthase to make ATP.
C) an electron to move it from a low to a high energy orbital.
D) Plastocyanin to be passed on to PSI.
E) NADP+ to make NADPH.
Answer: C
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Carbon-12 and carbon-13 are different in the number of their _____.
A. neutrons
B. electrons
C. protons
D. protons and electrons
Nitrification
a. converts ammonium into nitrates. b. reduces nitrates to nitrites. c. converts nitrogenous compounds into free nitrogen. d. converts atmospheric nitrogen to ammonia. e. reduces ammonia to ammonium
Sewage and waste from waterways is controlled with
a. sewage treatment. b. chlorine. c. UV disinfection. d. solar aquatic systems. e. all of these.
List the stages in the eukaryotic cell cycle and identify the principal events characteristic of each stage. What will be an ideal response?