Autotrophy has been observed among the ________.
A. methanogens
B. cyanobacteria
C. extreme thermophiles
D. All of the choices are correct.
Answer: D
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When do the centromeres divide in meiosis?
A. prophase II B. anaphase II C. telophase I D. anaphase I E. prophase I
Which of the following statements about the autonomic nervous system is NOT true?
A. The functions of the autonomic system are generally involuntary and subconscious. B. The sympathetic nervous system deals with "fight-or-flight" responses. C. The autonomic nervous system regulates the activities of cardiac and smooth muscle and glands. D. The parasympathetic nervous system promotes actions associated with relaxation. E. The neurotransmitter associated with the parasympathetic system is norepinephrine.
What mechanism did Charles Darwin discover as the driving force behind evolution?
A) the inheritance of acquired characteristics B) natural selection C) artificial selection D) common descent with modification
Please match the clinical stage of infection with its description.
Microorganism is multiplying rapidly and causing fever and specific disease symptoms A) Prodromal stage B) Period of invasion C) Convalescent period D) Incubation period