Vocabulary
Enzymes 1
Enzymes 2
Enzymes 3
100
Define active site
The place where the substrate binds
100

Can all enzymes always work effectively at any pH level?

No. Enzymes will denature at the wrong pH level.

100

The names for different enzymes end in what three letters?

-ase

100

How does an enzyme act as a catalyst?

It speeds up chemical reactions (without being used up in the reaction).

200
Define enzymes
Protein that speeds up chemical reactions
200

Name two factors that can impact the effectiveness of enzyme function in the body.

temperature & pH

200

What type of macromolecule is an enzyme?

Protein

200
Can a single enzyme be used over and over?
YES!
300

Define: What is the product of a chemical reaction?

The substance that results from a chemical reaction

300

Explain what is happening regarding enzyme activity in this graph:

file:///var/folders/mb/672bhlmn0rv7ncff330bdrtm0000gp/T/TemporaryItems/NSIRD_screencaptureui_O7jYQr/Screenshot%202026-04-23%20at%204.24.50%E2%80%AFAM.png 

The presence of an enzyme has lowered the activation energy needed to complete the chemical reaction, thus speeding up the reaction.

300
How many DIFFERENT SHAPED substrates can fit into one active site?
only one substrate can fit into a specific active site
300
What has more energy, reactants or products?
Reactants
400

Define activation energy

The amount of energy it takes for a chemical reaction to occur.

400

Why is having enzymes in our body so important?

Our body needs enzymes to help the chemical reactions occur quicker. Enzymes help our bodies work effectively/to its greatest potential.

400
Why are doctors so concerned with extremely high body temperatures (103, 104, etc)?
Important enzymes will denature, harming your body
400
Why is an enzyme complex always compared to a "lock and key"?
There is only one type of key that will fit into a lock, as there is only one type of substrate that will fit into the active site of an enzyme.
500
Define denature (as it relates to enzymes)
Anything that changes the shape of an enzyme
500

Will a higher activation energy lead to more or less chemical reactions occuring?

Less/fewer chemical reactions would occur, since the input of energy required would be greater.

500

Why is it harmful when enzymes become denatured?

The enzyme deforms/changes shape, and thus cannot bind to the substrate to perform chemical reactions in the body.  When chemical reactions slow, the body's organ systems can begin to fail.

500
Scientifically describe "lactose intolerance"
Your body does not have the enzyme lactase and therefore cannot digest the sugar lactose properly, making you feel sick/uncomfortable when you eat/drink things with lactose
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