Transfer of random pieces of DNA mediated by phage is known as
A) transformation of competent cells.
B) generalized transduction.
C) conjugation.
D) transposition.
E) specialized transduction.
B
Bloom's Taxonomy: Comprehension
Section: Genetic Recombination and Transfer
Learning Outcome: 7.32
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Epigentic mechanisms of gene regulation ____ and are ____
A. can be inherited by daughter cells; permanent B. can be inherited by daughter cells; often reversible and responsive to environmental change C. can be inherited by daughter cells; random with respect to the environment D. are not inherited by daughter cells; reversible and responsive to environmental change E. are not inherited by daughter cells; permanent
Of the following organisms, which can be described as a fastidious obligate intracellular parasite that multiplies by binary fission in the cytoplasm of host cells and infects humans as accidental hosts in most cases?
a. Rickettsia b. Chlamydia c. Calymmatobacterium d. Coxiella
Identify the sequence of amino acids in the 3aa and 5aa polypeptides (listing them N terminus to C terminus). a. The 3aa sequence is valine-serine-aspartate, and the 5aa sequence is valineserine-aspartate-threonine-proline
b. The 3aa sequence is serine-valine-aspartate, and the 5aa sequence is serinevaline-aspartate-threonine-proline. c. the 3aa sequence is aspartate-valine-serine, and the 5aa sequence is serineaspartate-valine-threonine-proline. d. The 3aa sequence is serine-valine-aspartate, and the 5aa sequence is serinevaline-aspartate-proline-threonine.
Oxygen crosses a plasma membrane by
A) osmosis. B) active transport. C) endocytosis. D) passive transport.