Atoms are composed of a central nucleus which is surrounded by which orbiting particles?
a. Neutrons
b. Electrons
c. Protons
d. Ions
Ans: b. Electrons
Biology & Microbiology
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Proteins in thermophiles must be stabilized by van der Waals forces, because hydrogen bonds cannot be maintained at
high temperatures
high temperatures
Biology & Microbiology
A solution with a pH of 3
A) is more alkaline than a solution with a pH of 2. B) has a higher concentration of OH- than a solution with a pH of 4. C) is neutral. D) is more acidic than a solution with a pH of 3.5.
Biology & Microbiology
Which of the following are prokaryotic organisms?
A. Animals B. Bacteria C. Fungi D. Plants
Biology & Microbiology
Dental remains from australopithecines suggest that they had a diet similar to that of modern chimpanzees.
a. true b. false
Biology & Microbiology