The process that converts one molecule of nitrogen to ammonia using 16 molecules of ATP is called ____
a. ammonia-oxidation
b. ammonification
c. nitrogen fixation
d. nitrification
e. denitrification
ANSWER: c
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Which of the following occurs when allolactose levels increase in E. coli?
A. Transcription of genes within the lac operon increases. B. Transcription of genes within the lac operon decreases. C. Transcription of genes within the lac operon does not change. D. E. coli cells replicate rapidly. E. The tryptophan operon becomes more active.
A species with a relatively constant rate of mortality in all age classes would most likely exhibit which
of the following survivorship curves?
a. Type I, which is graph A b. Type II, which is graph B c. Type I, which is graph C d. Type III, which is graph C e. Type III, which is graph A
Which type of plant has a method of photosynthesis that is least efficient in a hot, dry climate?
1.C3 plant 2.C4 plant 3.CAM 4.all are equally efficient
Ecosystem effects: Plant communities
What will be an ideal response?