When Calvin injected 14C labeled CO2 into cultures of green algae, what led him to conclude that rubisco adds CO2 to ribulose bisphosphate in the Calvin cycle?
A. radioactivity appeared last in ribulose bisphosphate.
B. radioactivity appeared last in 3-phosphoglycerate
C. radioactivity appeared last in glucose.
D. radioactivity first appeared in ribulose bisphosphate.
E. radioactivity first appeared in glucose.
F. radioactivity first appeared in 3-phosphoglycerate.
Answer: A
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Glucose, C6H12O6, is best described as a(n)
a. element. b. isotope. c. compound. d. ion. e. atom.
On the basis of nutrient content, a mountain lake with little sediment or nutrients is classified as a(n) ________ lake
Fill in the blank(s) with correct word
Before the development of photosynthesis and as ancient cells became crowded, there was probably a major competition for:
A) enzymes. B) water. C) oxygen gas. D) organic molecules.
Answer the following questions true (T) or false (F)
1. In the death phase of a closed pure batch system a small number of the cells survive by adapting to the new waste-filled environment and by feeding off dead cells. 2. Many microbes have evolved ways to detoxify reactive oxygen species so that they can safely use oxygen in their metabolism. 3. Chemoautotrophs use an inorganic carbon source.