Biology Questions and Answers

Biology Questions and Answers

Enzymes

1. What are catalysts?

Catalysts are substances that reduce
the activationreaction, facilitating energy of a chemical it or making it
energetically viable. The catalyst
increases the speed of the chemicalreaction.

2. What amount of catalyst is
   consumed in the reaction it
   catalyzes?

Catalystsreactions are not consume they catalyze. d in the

3. Is there a difference
   between the initial and the
   final energy levels in
   catalyzed and non-catalyzed
   reactions?

The catalysienergetic state ofs does not alter th reagents and productse (^)
of a chemical reaction. Only the energy
necessary fothe activationr the reaction to energy, is altered.occur, i.e.,

4. What are enzymes? What is
   the importance of enzymes for
   living beings?

Enzymes are proteins that are catalysts

of chemical reactions.is known that catalysts From C are non-hemistry it

consumable substances that reduce the

activationchemical reaction to occur. energy necessary for a

Enzymes are highly specific to threactions they catalyze. They are of vitale (^)
importance for life because most
chemical reactionstissues are catalyzed b of the cells andy enzymes.
Without enzymatic action those
reactionshappen in the required speed for the would not occur or would not
biological prparticipate.ocesses in which they

5. What is meant by
   substrates of enzymatic
   reactions?
   Substrateswhich enzymes act. are reagent molecules upon
   The enzyme has spatialthe attachment of its substrate. T binding siteshese for
   sites are called activation centers of the

enzyme. Substratescenters forming the enzyme-su bind to thesesbstrate (^)
complex.

6. What are the main
   theoretical models that try to
   explain the formation of the
   enzyme-substrate complex?
   There are two maithe formation of the enzyme-substraten models that explain
   complex: ththe induced fit me lock aodel.nd key model and

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