The integration of phage DNA into the bacterial chromosome occurs because of
A.
the phage's ability to synthesize an enzyme that integrates its DNA into the host's chromosome.
B. the phage's ability to synthesize enzymes to enter the bacterium.
C. similar RNA nucleotides in both.
D. the similarity in enzyme metabolism.
E. the phage's ability to synthesize enzymes to enter the bacterium AND similar RNA nucleotides in both.
A
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The chemical difference between dideoxyribonucleotides used in Sanger sequencing and the deoxyribonucleotides
normally found in DNA is the presence of a(n) _____ in the deoxyribose sugar of dideoxyribonucleotides.
a. 3' – H rather than – OH b. 5' – H rather than – OH c. 5' – OH rather than – H d. 5' – H rather than – OH e. 3' – COOH rather than – OH
Lamprey populations introduced into the Great Lakes have grown dramatically. Why?
A) Competitive species have driven them from the ocean. B) Fishers have intentionally introduced them with the hope of farming them for "eel skin." C) They have no natural predators in these waters. D) Lamprey stocking programs have been highly effective. E) A fish species that they naturally prey upon has recently been introduced into the Great Lakes.
Prion (PrPc) is a (A)___________ protein that has a cytoprotective role. PrPsc has an ability to convert PrPc into PrPsc, and forms aggregation through stacking of its (B)____________.
a. (A) GPI anchored membrane, (B) B-sheet b. (A) seven-transmembrane, (B) B-sheet c. (A) GPI anchored membrane, (B) a-helix d. (A) seven-transmembrane, (B) A-helix
In the microscope, you observe multinucleated amoeboid cells with sporangia that form spores. This is a(n)
A) ascomycete. B) cellular slime mold. C) Euglenozoa. D) tapeworm. E) plasmodial slime mold.