Bacteriophage T4 blocks transcription of host genes using an enzyme that transfers an ________ from NAD onto the alpha subunit of RNA polymerase.

What will be an ideal response?


ADP, ADP-ribose, ADP-ribosyl

Biology & Microbiology

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Microfilaments are assembled from ____

a. keratin b. myosin c. laminin d. actin e. tubulin

Biology & Microbiology

When an enzyme-catalyzed reaction reaches equilibrium ____

a. the enzymes are now inhibited b. the chemical reactions cease c. the rate of the forward and reverse reactions are equal d. the concentration of reactants equals the concentration of products e. ATP is no longer required to drive the reaction

Biology & Microbiology

Which group makes up the majority of the biomass in an ecological pyramid?

a. Herbivores b. Decomposers c. Carnivores d. Producers e. Detritivores

Biology & Microbiology

What are the helper and inducer cells?  

A.  B cells B.  macrophages C.  plasma cells D.  T cells E.  monocytes

Biology & Microbiology