To make restriction fragments, a DNA sample is treated with ________
A) DNA ligase
B) restriction enzymes
C) DNA polymerase
D) lysozyme
B
Biology & Microbiology
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Carbon-12, Carbon-13 and Carbon-14 are examples of:
A. ions B. isomers C. molecules D. isotopes
Biology & Microbiology
Isometric contractions result in generation of force, increase of muscle tension, and movement of a body part.
a. true b. false
Biology & Microbiology
Which one of the following is NOT directly involved in the production of a typical spinal reflex?
A) brain B) sensory neuron C) motor neuron D) interneuron E) stimulus
Biology & Microbiology
Because of the high requirement for reducing power in nitrogen fixation, the nitrogenase enzyme that carries out the reaction is very sensitive to the presence of ________.
A. oxygen B. light C. carbon dioxide D. None of the choices are correct.
Biology & Microbiology