In addition to serving as waterproof coverings or as parts of biological membranes, lipids

store glucose and other sugars.

transmit hereditary information.

supply energy for chemical reactions.

The ability of an enzyme to function properly depends on its environment. Unlike most enzymes in the human body, you would expect enzymes produced by the stomach to function best in an environment where

the temperature is above normal body temperature.

the salt concentration is very high.

The graph shows the effect of temperature on enzyme action. What characteristic do enzymes E 1 , E 2 , and E 3 share?

Their activity is at a low level between 15°C and 25°C.

Their activity increases between 20°C and 30°C.

Their activity is greatest between 5°C and 10°C.

Their activity is at a high level between 30°C and 40°C.

Which of the following would be considered the most important elements of life?

potassium, nitrogen, phosphorus

Which of the following describes the four major groups of biomolecules found in living things?

Carbohydrates, lipids, nucleic acids, and proteins

Carbohydrates, amino acids, proteins, and nitrogen bases

Carbohydrates, monomers, polymers, and proteins

None of the other answers are correct.

Enzymes are proteins that are found in cells. What is their role?

They speed up chemical reactions in cells.

They lower the activation energy needed for some reactions.

They regulate the absorption of energy in chemical reactions.

All the other answers are correct.

A change in pH can change the shape of a protein. How might a change in pH affect the function of an enzyme?

All the other answers are correct.

A new enzyme may be required to speed up the reaction.

The enzyme may no longer be able to function for the substrate as a catalyst.

The enzyme and substrate may no longer fit together so the enzyme cannot speed up the reaction.

The structure of biomolecules is closely related to the functions they perform in living cells. Which statement below best illustrates this concept?

The active site of a protein enzyme precisely fits the shape of its substrate molecules.

Lipids may be saturated or unsaturated.

Carbohydrates such as starch are long chains of sugar monomers.

Proteins may be made up of chains that are folded or coiled.

The graph shows how enzymes affect reactions in cells. Which statement best summarizes the information shown in the graph?

Enzyme decrease the activation energy of the reaction.

Enzymes increase the energy of the reactants.

Enzymes decrease the energy level of the products.

Enzymes reverse the direction of the reaction.

A lock and key is sometimes used as a model to promote understanding of enzymes. Which characteristic of enzymes or their action is best illustrated by this model?

The specificity of fit between an enzyme and a substrate

The sensitivity of enzymes to changes in pH

The change in activation energy the enzymes cause

The increase in reaction rate due to the action of the enzyme

What is a key difference between carbohydrates and proteins?

Proteins contain nitrogen; carbohydrates do not.

Carbohydrates contain carbon; proteins do not.

Carbohydrates are biomolecules; proteins are not.

Proteins contain covalent bonds; carbohydrates do not.

What single question could be used to distinguish a lipid from a carbohydrate?

What is the ratio of carbon to oxygen atoms in the molecule?

Does the molecule contain hydrogen?

Are oxygen atoms present in the molecule?

A major function of fats, or lipids, is to

speed up chemical reactions in the cell.

contain instructions that cells need to carry out their functions.

provide one of the raw materials for photosynthesis.

TEKS 9A&C-Biomolecules/Enzymes

Biology

KG - University

NGSS covered

Used 29+ times

AI Actions

Add similar questions

Adjust reading levels

Convert to real-world scenario

Translate activity

More...

Content View
Student View

33 questions

Show all answers

MULTIPLE CHOICE QUESTION

1 min • 1 pt

A substance with a pH of 6 is called

an acid

a base

water

a suspension

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What kinds of atoms are bonded to carbon atoms in the molecule shown?

helium, oxygen, and nitrogen

calcium, hydrogen, and oxygen

hydrogen, oxygen, and nitrogen

helium, carbon, and sodium

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which statement is true about macromolecules?

Simple sugars are made of polysaccharides.

Glycerol is made of fatty acids.

Proteins are made of amino acids.

Nucleotides are made of nucleic acids.

An enzyme serves as a place where a chemical reaction can occur because-

the enzyme is a substrate.

the enzyme is one of the reactants in the reaction.

the charge on the enzyme's active site is the same as the charge on the substrates.

the shape of the substrates fits perfectly into the shape of the enzyme's active site.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Most enzymes work best at about 37°C, normal body temperature, and each one

is usually specific to only one type of chemical reaction in the body.

serves as a catalyst for several kinds of reactions.

helps speed up reactions by a factor of 2.

helps slow down reactions by a factor of 10.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

An enzyme acts as a catalyst to a chemical reaction by

lowering the activation energy needed to get the reaction started.

making one of the substrates needed for the reaction.

regulating the temperature at which the reaction takes place.

regulating the pH at which the reaction takes place.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

How do enzymes control chemical reactions in the body?

Enzymes speed up chemical reactions.

Enzymes slow down chemical reactions.

Enzymes increase the activation energy of a reaction.

Enzymes inhibit the catalysts of a reaction.

Access all questions and much more by creating a free account

Create resources

Host any resource

Get auto-graded reports

Continue with Google

Continue with Email

Continue with Microsoft

or continue with

Facebook

Apple

Others

By signing up, you agree to our Terms of Service & Privacy Policy

Already have an account?

Similar Resources on Wayground

30 questions

Central Dogma

Quiz

•

9th - 12th Grade

30 questions

Nutrient Cycles Practice Quiz

Quiz

•

9th - 10th Grade

28 questions

Test: Macromolecules

Quiz

•

10th Grade

28 questions

Unit 3: Cell Energy

Quiz

•

10th - 12th Grade

28 questions

Pedigree Chart

Quiz

•

6th Grade - University

28 questions

Biologic Molecules

Quiz

•

9th - 11th Grade

30 questions

Overview of Ecology Lesson

Quiz

•

9th - 10th Grade

29 questions

Cells State Test Practice Question

Quiz

•

9th Grade - University

Popular Resources on Wayground

10 questions

How much do you know about our Portrait of an Eagle?

Quiz

•

10th Grade

10 questions

Fast Food Slogans

Quiz

•

6th - 8th Grade

21 questions

Continents and Oceans

Quiz

•

6th Grade

20 questions

Parts of Speech

Quiz

•

5th Grade

16 questions

Subject & Predicate

Quiz

•

5th Grade

25 questions

Multiplication Facts

Quiz

•

5th Grade

12 questions

Map Skills

Quiz

•

3rd Grade

22 questions

Continents and Oceans

Quiz

•

5th Grade

Discover more resources for Biology

28 questions

Water

Quiz

•

KG - 10th Grade

TEKS 9A&C-Biomolecules/Enzymes

A substance with a pH of 6 is called

What kinds of atoms are bonded to carbon atoms in the molecule shown?

Which statement is true about macromolecules?

An enzyme serves as a place where a chemical reaction can occur because-

Most enzymes work best at about 37°C, normal body temperature, and each one

An enzyme acts as a catalyst to a chemical reaction by

How do enzymes control chemical reactions in the body?

In addition to serving as waterproof coverings or as parts of biological membranes, lipids

The ability of an enzyme to function properly depends on its environment. Unlike most enzymes in the human body, you would expect enzymes produced by the stomach to function best in an environment where

four most common elements that make up all living things are carbon, hydrogen,

Access all questions and much more by creating a free account

Similar Resources on Wayground

Popular Resources on Wayground

Discover more resources for Biology