Which of the following types of organisms would be most likely to organize its genome into a nucleoid region?
A. fungi
B. plants
C. protists
D. archaea
Answer Key: D
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One hypothesis on the origin of DNA points to RNA viruses evolving a modified nucleotide that is insensitive to ribonucleases
Indicate whether the statement is true or false.
If a substance is a neurotransmitter, stimulation of the presynaptic cell should have the same effect as
a. direct application of the proposed substance to the postsynaptic cell. b. stimulation of the postsynaptic cell. c. blocking receptors on the postsynaptic cell. d. inactivating the substance.
What type of infectious agent causes potato spindle tuber disease?
A. Viroid B. Prion C. Virus D. Virino
The general term used to denote a situation in which two organisms live together in a close partnership required by one or both members is ______.
A) Antibiosis B) Synergy C) Mutualism D) Symbiosis