Species whose ancestors might once have been free living may now be present as parasites. Would their genomes now tend to be larger, smaller, or approximately the same in size and complexity?
What will be an ideal response?
smaller
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Which of the following statements about DNA is FALSE?
A. One chromosome is made up of many DNA molecules. B. A eukaryotic genome is made up of many DNA molecules. C. A DNA double helix contains both covalent bonds and hydrogen bonds. D. A strand of DNA is made up of many nucleotides. E. All of these are TRUE.
Anandamide is a substance made in the body that is the equivalent of the active component of
A) heroin. B) chocolate. C) marijuana. D) barbiturates.
Influenza virus can exhibit constant mutation of viral glycoproteins, called antigenic ________, or alternatively antigenic ________, which is a more serious phenomenon caused by the exchange of a viral gene with that of another influenza virus strain.
A. drift; exchange B. exchange; drift C. shift; drift D. drift; shift
Which is incorrect about viral diseases?
A. Most DNA viruses multiply in and are released from the cytoplasm. B. Viral diseases can be zoonoses. C. Diagnosis of some diseases involves antigen detection with monoclonal antibodies. D. Some viruses are teratogenic. E. Some DNA viruses can become permanent residents of host cells.