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 symptoms typically produced by viroids
C) develop the typical symptoms of TMV infection
D) not show any disease symptoms
E) become infected, but the sap from these plants would be unable to infect other plants
Answer: C
You might also like to view...
The reaction diagrammed to the right (more than once answer may apply):
A. is the final reaction of glycolysis. B. is one possible pathway in the fermentation of pyruvate. C. shows synthesis of the substrate that enters the citric acid cycle. D. occurs in the cytosol. E. occurs in the mitochondrial matrix. F. occurs twice for each glucose oxidized.
The promoter in Figure 14-1 is labeled __________
a. 6 b. 3 c. 1 d. 2 e. 7
If a toxin, such as a bacterial toxin, destroys ribosomes, what cellular activity will be affected first?
a. protein synthesis b. DNA synthesis c. movement d. energy storage e. active transport
Why does urine frequently have an acidic pH?
A. The kidneys filter and excrete H+ from the blood. B. The kidneys absorb H+ ions and excrete bicarbonate ions. C. The kidneys produce H+ in the process of filtering the blood. D. The blood has an acidic pH and the kidneys produce urine similar to the pH of the blood. E. There is a high concentration of hydrochloric acid (HCl) in the urine, making it highly acidic.