A researcher lyses a cell that contains nucleic acid molecules and capsomeres of tobacco mosaic virus (TMV). The cell contents are left in a covered test tube overnight. The next day this mixture is sprayed on tobacco plants
We expect that the plants would _____. A) develop some but not all of the symptoms of the TMV infection
B) develop the typical symptoms of TMV infection
C) not show any disease symptoms
D) become infected, but the sap from these plants would be unable to infect other plants
B
You might also like to view...
How are simulation results useful for informing decisions about the real world?
A. Because simulation models precisely replicate real-world biology, the results they produce accurately predict everything that will happen in the real world. B. Because simulation models capture the essential features of real-world biology, the results they produce always accurately predict basic outcomes in the real world. C. Because simulation models capture key features of real-world biology, the results they produce can lead to reasonable predictions and further hypotheses about the real world. D. Because simulation models are not necessarily based on real-world biology, they can generate predictions about species that aren't yet well studied in the real world.
New genes are introduced into a gene pool by
A. evolution. B. spontaneous mutations. C. natural selection. D. inheritance of acquired characteristics.
A growth-producing region of cell division, known as a/an ________, is found near the tips of stems and roots
A) sporangium B) cuticle C) apical meristem D) lignin
The life cycle of the fish tapeworm is similar to that of the beef tapeworm. Which of the following is the most effective preventive measure?
A) salting fish before eating B) refrigerating stored fish C) cooking fish before eating D) wearing gloves while handling fish E) not swimming in fish-infested waters