Selective toxicity refers to damage to
A. prokaryotic cell membranes.
B. the target organisms but not vertebrate cells.
C. pathogenic organisms.
D. nucleic acids.
Answer: B
You might also like to view...
Which of the following is true about restriction endonucleases?
A. They make a blunt cut on the two DNA strands so that there are no single-strand regions. B. Depending on the incubation conditions, the same enzyme can either make a blunt cut on the two DNA strands so that there are no single-strand regions OR make staggered cuts on the DNA so that single-strand ends are formed that can be used to insert foreign DNA cut with the same enzyme. C. Some make a blunt cut on the two DNA strands so that there are no single-strand regions and some make staggered cuts on the DNA so that single-strand ends are formed that can be used to insert foreign DNA cut with the same enzyme. D. They make staggered cuts on the DNA so that single-strand ends are formed that can be used to insert foreign DNA cut with the same enzyme.
Histone chaperones:
A. are required for direct assembly of the 30 nm filament. B. are acidic proteins that bind individual histones and assemble them into dimer and tetramer forms. C. can also modify the histones covalently by phosphorylation. D. are acidic proteins that bind to H2A-H2B dimers and H3-H4 tetramers before assembly into nucleosomes. E. can also modify the histones covalently by acetylation.
A frequent complication of untreated gonorrhea in women is
A. pelvic inflammatory disease. B. syphilis. C. dysuria. D. vaginal discharge.
A population grows as long as its ____
a. total fertility rate exceeds the replacement fertility rate b. replacement fertility rate exceeds the total fertility rate c. total fertility rate equals the replacement rate d. total fertility rate is at least twice the replacement fertility rate e. total fertility rate falls below the average replacement fertility rate