The HBV genome is a circular dsDNA molecule that consists of ________.
A. one complete but nicked strand
B. one complete but nicked strand and a complementary strand
C. a complementary strand
D. segmented DNA
Answer: B
You might also like to view...
A current problem in modern medicine is the development of drug resistance mutations. This occurs when a mutation arises in a disease-causing microbe making it resistant to a drug and thus rendering the drug useless in treating a specific disease. Many useful drugs are competitive inhibitors of specific enzymes, and the drug-resistance mutations prevent the binding of the drug. These types of mutations, in addition to preventing competitive inhibitor binding, can also sometimes reduce the activity of the enzyme. Why is that the case?
A. Binding to the competitive inhibitor is essential for the function of the enzyme B. These mutations most likely affect an allosteric site on the enzyme C. These mutations lower the activation energy of the reaction catalyzed by the enzyme D. These mutations most likely change the shape of the active site of the enzyme Clarify Question What is the key concept addressed by the question? What type of thinking is required? Gather Content What do you already know about enzymes and how their activity is regulated? How does this drug affect enzyme activity under normal circumstances? What other information is related to the question? Choose Answer Do you have all necessary information to analyze how drug resistance would reduce enzyme activity? Reflect on Process Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
Explain the process of site-directed mutagenesis, and discuss some applications of this technique
What will be an ideal response?
The portion of the body fluid contained in cells is
a. interstitial fluid. b. plasma. c. intracellular fluid. d. extracellular fluid.
Molecules or regions of molecules that readily interact with water are said to be ________, whereas molecules or regions of molecules that are insoluble in water or do not readily interact with water are said to be ________.
What will be an ideal response?