What is the processivity of an enzyme?
What will be an ideal response?
Ans: Processivity is a measure of the enzyme's ability to remain bound to its template rather than dissociate from it. DNA polymerases have high processivity; they tend to remain on the DNA template during replication.
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The atmosphere and seas of the early Earth lacked oxygen. What kind of organisms could NOT have lived under those conditions?
A. obligate aerobes B. obligate anaerobes C. facultative anaerobes D. chemoautotrophs E. cyanobacteria
The letter “C” in the above figure represents which
teeth? a. incisors b. molars c. canines d. premolars e. none of these
Chemical equilibrium is relatively rare in living cells. An example of a reaction at chemical equilibrium in a cell would be _____
A) one in which the free energy at equilibrium is higher than the energy content at any point away from equilibrium B) one in which the entropy change in the reaction is just balanced by an opposite entropy change in the cell's surroundings C) an endergonic reaction in an active metabolic pathway where the energy for that reaction is supplied only by heat from the environment D) a chemical reaction in which both the reactants and products are not being produced or used in any active metabolic pathway at that time in the cell
The photosystems in chloroplasts contain hundreds of chlorophyll molecules, most of which are part of _______________
(a) plastoquinone. (b) the antenna complex. (c) the reaction center. (d) the ferredoxin complex.