Explain why prokaryotes tend to survive and adapt more rapidly to extreme and dynamic environmental conditions than eukaryotes
What will be an ideal response?
Answer: Answers will vary, but should reflect an understanding of how the higher surface-to-volume ratio influences the growth rate and total accumulation of mutations in prokaryotes. Another feature that increases mutation rate is the haploid nature of prokaryotes. Lastly, answers could mention that the rigid cell walls and various changes in the cytoplasmic membrane make it easier for prokaryotes to survive in unusual and extreme environments.
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Which statement about RNA viruses is true?
a. Mutations of RNA viruses occur frequently. b. RNA viruses contain both DNA and RNA in their cores. c. RNA viruses cause chickenpox and hepatitis B. d. RNA viruses are more stable than DNA viruses.
When an animal is apparently aware of its circumstances and uses reasoning to achieve a goal it is said
to have _____.
a. operant conditioning b. habituation c. cognition d. raven awareness e. learning
Which of the following are proteins in the blood that can be activated to lyse bacterial cells, mark other bacterial cells for destruction, and enhance inflammation?
A) albumins B) antibodies C) complement D) interferons E) lymphokines
Arsenic is a common hazardous waste that can contaminate soil and water surrounding smelting facilities. A bioprocess has been developed using naturally occurring bacteria that can remove the arsenic. This process is an example of:
A. Genetic engineering B. Bioremediation C. Nitrogen fixation D. Fermentation