Enzymes/DNA Handout Questions Flashcards Preview

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Flashcards in Enzymes/DNA Handout Questions Deck (16):
1

The attachment of a sub straight to the enzymes active site creates the?

Enzyme-sub straight complex

2

Some reactions posses an activation energy barrier that must be overcome for the reaction to occur. True or false?

True

3

In catalysed reactions , the reactants are converted into products much slower than they would be without a catalyst. True or false ?

False

4

The binding of an activator or inhibitor to one allosteric site will affect the activity of some of the active sites on the enzymes. True or false?

True

5

Cells can control metabolic processes by restricting the location of enzymes and enzyme complexes to certain locations within the cell. True or false?

True

6

Non competitive inhibitors have the ability to change the shape of the active site in such a way that it looses affinity for its substrate? True or false?

Both it slows reaction rate down .

7

Cells must control enzyme activity to coordinate cells activities. True or false?

True

8

What kind of inhibitors attach to the allosteric sites of certain enzymes?

Non-competitive inhibitors

9

A catalyst is?

A substance that speeds up a chemical reaction, without being consumed in the process

10

Most often feedback inhibition is negative? True or false?

True

11

Inhibitors can be produced by the cell to?

Regulate activity

12

As sub straights enter the active sites, it's functional groups come close to the functional groups of a number of amino acids. What happens as a result?

The protein changes its shape to accommodate the substrate

13

Most human enzymes work best at around what temperature?

27 degrees Celsius

14

Every enzyme has an optimal temperature and pH. True or false?

True

15

A sub strait that binds to an allosteric site on an enzyme and stabilises the protein conformation and keeps all the active sites available to their substrates, this is the definition of which term?

Activator

16

Defined feedback inhibition is?

A method of metabolic control in which a product formed later in a sequence of reactions allosterically inhibits an enzyme that catalyses a reaction occurring earlier in the process