The splitting of water and the generation of oxygen occur where?
A. The Krebs Cycle
B. Photosystem I
C. The Calvin Cycle
D. Photosystem II
Answer: D
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A worker in a cheese-making facility argued that whey, a nutrient-rich by-product of the process, should be dumped into a nearby pond to serve as fish food.Is this a good idea or a bad one, and why?
A. It's a great idea! Let's feed the fish and help them multiply! B. Bad idea-the fish won't be able to eat the whey, so it will sit there rotting and pollute the waters, making them uninhabitable for the fish. C. Bad idea-bacteria would thrive on this rich nutrient source and multiply readily. As they multiply, they'll use the oxygen in the water to harvest the energy from the whey, depleting it. As the oxygen depletes below a certain point, the fish (and perhaps other organisms) will not be able to survive. D. Great idea! This will not only feed the fish, but also microbes and other small organisms. It'll enhance the entire food chain and help all of them!
A nucleotide is constituted of
a. a five carbon sugar, a nitrogenous acid, and a phosphate group. b. a six carbon sugar, a nitrogenous base, and a phosphate group. c. a five carbon sugar, a nitrogenous base, and a phosphate group. d. a six carbon sugar, a nitrogenous acid, and a phosphate group. e. a four carbon sugar, a nitrogenous acid, and a phosphate group
Action potentials relay different intensities of information due to the
A) amplitude of action potentials relative to the strength of the stimulus. B) frequency of action potentials relative to the strength of the stimulus. C) duration of action potentials relative to the strength of the stimulus.
Transcription takes place in 3 steps: initiation elongation and ____
Fill in the blank(s) with the appropriate word(s).