BIO 200 FINAL EXAM LATEST / BIO200 FINAL EXAM QUESTIONS AND ANSWERS REAL EXAM QUESTIONS|GRADED A+
Which of the following about the nitrogen cycle is false?
a)Nitrogen-fixing bacteria exist on the root nodules of legumes and in
the soil.
b)Ammonification is the process by which ammonium ion (NH4+) is
released from decomposing organic compounds.
c)Nitrification is the process by which nitrites (NO2-) are converted to
ammonium ions (NH4+).
d)Denitrifying bacteria convert nitrates (NO3-) into nitrogen gas (N2).
-CORRECT ANSWER-- c)Nitrification is the process by which nitrites
(NO2-) are converted to ammonium ions (NH4+).
The first forms of life on Earth were thought to be... -CORRECT
ANSWER-- Prokaryotes
Microbial mats... -CORRECT ANSWER-- are multi-layered sheet of
prokaryotes including mostly bacteria but also archaea
The first organisms that oxygenated the atmosphere were -CORRECT
ANSWER-- cyanobacteria
The presence of a membrane-enclosed nucleus is a characteristic of.... -
CORRECT ANSWER-- eukaryotic cells
Which of the following consist of prokaryotic cells? -CORRECT
ANSWER-- bacteria and archaea
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