Causes a non-communicable pulmonary infection that resembles tuberculosis:
A. Mycobacterium avium complex (MAC).
B. Mycobacterium kansasii
C. Mycobacterium scrofulaceum.
D. Mycobacterium fortuitum complex.
E. Mycobacterium marinum.
Answer: B. Mycobacterium kansasii
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Which of the following is NOT true of small effector molecules?
A. They can cause a conformational change in a regulatory protein. B. They can prevent a repressor from binding a gene region. C. They can regulate gene transcription by binding to DNA. D. They can regulate gene transcription by binding a regulatory protein.
Which of the following is the most probable sequence of events when fertilizer runoff reaches a bay?
What will be an ideal response?
The pH of a fluid is a measure of:
a. how acidic or basic it is. b. the concentration of phosphate groups. c. the amount of adenosine triphosphate (ATP) in it. d. its capacity to function as a soap. e. its enzymatic stability.
A polymer with the sequence 5' ACGTACGAATAG 3' is a
A. polysaccharide. B. piece of RNA. C. piece of DNA. D. protein.