Because an enzyme __________ after a reaction, it can __________.

Returns to its original shape; be used again

Which definition is closest to the meaning of Active Site?

The area where the substrate binds to the enzyme

A chemical reaction is a process by which atoms or groups of atoms in substances are

rearranged into different substances

At high temperatures, an enzyme's rate of reaction decreases because the increased heat...

Alters the active site of the enzyme

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BioI - Ch6.2 Chemical Reactions

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A quick overview on the basics of enzymes #biology #enzyme #McGrawHill_Biology

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Questions 15

Answers

1
Which equation satisfies the Law of Conservation?
CH4 + O2 = CO2 + H2O
CO2 + H2O = C6H12O6 + O2
2H2O2 = 2H2O + O2
H2 + O2 = H2O
2
Because an enzyme __________ after a reaction, it can __________.
Is destroyed; never be used again
Is fundamentally altered; be reused with the same substrate
Returns to its original shape; be used again
Is not changed; not be reused
3
Enzymes are mainly which macromolecule?
Protein
Lipid
Carbohydrate
Nucleic Acid
4
What is the optimum pH for enzyme A?
8
6
5
3
5
At what pH will both enzymes function?
5
3
8
7
6
The primary purpose of an enzyme is to...
Destroy dangerous parts of a cell
Enzymes do not impact a reaction
Stop or slow down a reaction from occurring
Start or accelerate a reaction
7
Which definition is closest to the meaning of Active Site?
The area where the enzyme and catalyst meet
The area where the substrate binds to the catalyst
The area where the substrate binds to the subunit
The area where the substrate binds to the enzyme
8
The three main environmental changes that impact an enzyme are temperature, pH, and __________.
Oxygen Levels
Inhibitors
Enzymes are not affected by the environment
Altitude
9
A chemical reaction is a process by which atoms or groups of atoms in substances are
mixed together with other substances
dissolved in other substances
rearranged into different substances
ionized by the loss of protons
10
When energy is released during a chemical reaction, the reaction is said to be
exothermic
potential
endothermic
anabolic
11
At high temperatures, an enzyme's rate of reaction decreases because the increased heat...
Forces the substrate and active site to vibrate rapidly
Increases the concentration of substrates
Alters the active site of the enzyme
Changes the pH within the system
12
In the following picture, which letters represent the 1) enzyme and 2) product?
B, D
D, A
C, B
B, C
13
Due to the shape of an enzyme, it can interact with...
Only certain substrates
All substrates
Other enzymes
Exactly one substrate <3
14
Without enzymes, the chemical reactions in your body would
require a different pH
continue unchanged
happen too fast
happen too slow
15
A(n) __________ is the reactant in an enzyme-catalyzed reaction.
Substrate
Amino Acid
Active Site
Activator

BioI - Ch6.2 Chemical Reactions Flashcards | StudBud