The duration of each bacterial division is called the generation or
A) exponential time.
B) viable growth.
C) doubling time.
D) growth curve.
Ans: C) doubling time.
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Recent studies indicate that active prokaryotic assemblages are present in high-temperature oil reservoirs, including genera such as
A. only Thermotoga and Thermoanaerobacter. B. Agrobacterium. C. Thermoanaerobacter. D. Thermotoga.
What is the difference between covalent and ionic bonds?
A) Covalent bonds involve the sharing of electrons, whereas ionic bonds involve the sharing of protons. B) Covalent bonds involve the attraction between slightly charged molecules, whereas ionic bonds involve the attraction between two fully charged ions. C) Covalent bonds involve the sharing of neutrons, whereas ionic bonds involve the attraction of slightly charged atoms. D) Covalent bonds involve the sharing of electrons, whereas ionic bonds involve the transfer of electrons from one atom to another.
The certainty of paternity is greatest in organisms that
A) are promiscuous. B) have extensive parental care. C) use internal fertilization. D) mate and lay eggs at the same time.
The combination of large numbers and small size collectively gives alveoli what characteristic that is essential to their function?
A) easy inflatability B) low surface area C) high surface area D) low air resistance