Answer:
All require at least one protein cofactor.
Explanation:
Translation is the process of the formation of the proteins from the different RNA molecules, enzymes and the cofactors. The translation process involves the movement of ribosomes over mRNA.
The three important process of translation are initiation, elongation and termination. All these steps require different enzymes and protein cofactors. The initiation requires the initiation cofactors like eIF, elongation require additional cofactors and same with the termination of translation.
Thus, the correct answer is option (1).
The repressor protein blocks the genes from making mRNA.
Normally when one studies an enzymatic reaction you need to do the following:
1. The initial rate of the reaction - or initial velocity - Vo - (when you've just combined the enzyme and the substrate) - you measure the amount of product made per unit time right at the beginning of the reaction.
2. You have to do this for each concentration of substrate - this would be a range of substrate concentrations.
3. You plot these on a graph with (substrate, Vo) as your (x,y)
What you will see is a graph that rises from 0,0 and eventually plateaus.
The plateau indicates that the enzyme is saturated with the substrate and is working as fast as it can. This is the maximum velocity or Vmax.
