The figure shows the absorption spectrum for chlorophyll a and the action spectrum for photosynthesis. Why are they different?
A) Green and yellow wavelengths inhibit the absorption of red and blue wavelengths.
B) Bright sunlight destroys photosynthetic pigments.
C) Oxygen given off during photosynthesis interferes with the absorption of light.
D) Other pigments absorb light in addition to chlorophyll a.
E) Aerobic bacteria take up oxygen, which changes the measurement of the rate of photosynthesis.
Answer: D
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The lacP site lies within the lac operon and is upstream of the genes that encode for proteins involved in lactose uptake and metabolism. Which of the following statements is TRUE of the lacP site?
A. It is the lac promoter site. B. It is where RNA polymerase binds. C. It is the site where genes are transcribed that encode proteins for metabolizing lactose. D. It is the lac promoter site where RNA polymerase binds. E. It is the lac promoter site, where genes are transcribed that encode proteins for metabolizing lactose.
Which of the following groups of microorganisms produces antibiotics?
A. Penicillium B. Streptomyces C. Bacillus D. Penicillium AND Streptomyces E. All of the choices are correct.
List at least three differences in how the E. coli and human genomes are arranged
What will be an ideal response?
Viruses are the only known infectious agents that are obligatory intracellular parasites
Indicate whether the statement is true or false