Biology Questions and Answers
- What are the main factors
that alter the speed of
enzymatic reactions?
The main factors that chaof enzymatic reactions are nge the speedtemperature, (^)
pH and substrate conce(quantity). ntration
- How does the substrate
concentration affect the speed
of enzymatic reactions?
Initiallyincreases, the speed of the reaction as substrate concentration (^)
increases; thisactivation centers o happens because f the enzyme bind tofree (^)
free substrates. Once all activation
centers obecome bound to their substratesf the available enzymes (^) new
increments of the substrate
concentration will havspeed of the reaction.e no effect on the
- How does temperature
affect the action of enzymes
upon their substrates?
There are defined temperaturunder which enzymes operate ae rangesnd there (^)
is a specific temperature temperature) in which enzymes hlevel (optimumave
maximum efficiency. Therefore
temperatuactivity and the speed of the reactionsre variations affect enzymatic
they catalyze.
In addition, asdenatured under extreme proteins, enzymes can betemperatures.
- Concerning enzymatic
reactions, how different are
the graphic curve of the
variation of the speed of a
reaction as function of
substrate concentration and
the curve of variation of the
speed of a reaction as function
of temperature?
The curve of variationenzymatic reaction as a f of speed of theunction of
growing substrategrowing curve until the point where it concentration is a (^)
stabilizes due to the saturation of the
activation centers of the enzymes.
The curve of variation of speed of the
enzymaticgrowing temperatur reaction as a fe has a crescentunction of (^)
portion and reaches a peak (the
optimum temand reaches zperatuero in the point ofre) then it decreases
inactivity of the enzymes by
denaturation.
- How is the cooling of
organs and tissues for medical
transplants associated with
the effect of temperature
upon enzymatic reactions?
The molecular decomposition of degradation duorgans and tissues isring the (^)
catalyzed adequate tby enzymes. The cooling toemperatures of some organs (^)
and tissues dreduces that enestined for transplantationzyme activity and thus
lessens the natural decomposition
process. Bycooling reduces th the same rationale, e metabolic work ofthe (^)
cells and prevents degradation of their
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