Why does the shape of an enzyme determine its function?

enzymes are specific to substrates (lock and key)

enzymes can work with any substrate

enzymes are activated by molecules

What is the purpose of an enzyme?

give permission for the reaction

control how many reactions occur

The enzyme known as ‘catalase’ is involved in the breakdown of hydrogen peroxide molecules into separate water and oxygen molecules. During this reaction, what happens to the ‘catalase’?

The enzyme would remain unchanged in any way.

The enzyme would become products: O2 and H20

The enzyme would be fully used up and discarded.

The enzyme would become a new type of enzyme.

Enzymes need certain environmental conditions in order to function properly. What happens when enzymes are heated to a high temperature?

they change their amino acid sequence

What are the four biological molecules?

proteins, carbohydrates, lipids, nucleic acids

What will most likely happen if an appropriate enzyme is added to a chemical reaction?

The reaction rate will increase.

The equilibrium of the reaction will be maintained.

The reaction rate will decrease.

The human body maintains a temperature of around 98.6 degrees at all times. Enzymes are involved in almost every chemical reaction in the body. Which of the following describes the connection between these two statements?

Enzymes function best at a specific temperature.

The body needs to be warm to prevent hypothermia.

The body is kept relatively warm to prevent too much enzyme action.

There is no connection between the two statements.

Overheating an enzyme results in the enzyme’s loss of —

storage of a large amount of chemical energy

storage of inherited information

Which of the following biological molecules is correctly paired with one of the functions it primarily serves in living cells?

nucleic acids - store genetic information

lipids - catalyze chemical reactions

carbohydrates - component of cytoskeleton

proteins - long term energy storage

Which best describes how enzymes function in the body?

Enzymes lower the activation energy of reactions.

Enzymes are converted into products by the reactions they catalyze.

One enzyme can catalyze many different reactions.

An enzyme is used once and then destroyed by the cell.

Biomolecules and Enzymes

Authored by Charles Martinez

Biology

9th - 12th Grade

NGSS covered

Used 4+ times

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92 questions

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MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Which biomolecule does starch belong to?

carbohydrates

lipids

nucleic acids

proteins

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

What is the monomer (building block) of a protein?

amino acids

nucleotide

fatty acid

monosaccharide

Which biomolecule is the main source of energy for all living things?

proteins

nucleic acids

lipids

carbohydrates

Which biomolecule builds muscle?

carbohydrates

lipids

proteins

nucleic acids

What is a polymer?

a large molecule made up of subunits (pieces)

building blocks

a small molecule made up of a single piece

none of the above

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

What is the name of the structure the red arrow is pointing to?

substrate

chromosome

enzyme

cell

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Which of the following determines an enzyme's effectiveness?

heat

pH (acidic or basic)

not enough enzymes; too many substrates

all are correct

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Biomolecules and Enzymes

Which biomolecule does starch belong to?

What is the monomer (building block) of a protein?

Which biomolecule is the main source of energy for all living things?

Which biomolecule builds muscle?

What is a polymer?

What is the name of the structure the red arrow is pointing to?

Which of the following determines an enzyme's effectiveness?

Why does the shape of an enzyme determine its function?

Which biomolecule contains pastas and breads?

Which biomolecule helps form body structures like muscles?

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