Which statement describes all enzymes?

They affect the rate of chemical reactions.

They control the transport of materials.

They provide energy for chemical reactions.

They absorb oxygen from the environment.

What happens when enzymes are heated to a high temperature?

The shapes of the enzyme are altered or denatured

The enzymes' amino acid sequence changes.

What is the function of nucleic acids?

build skin, hair, nails, muscles

Which pair is incorrect?

nucleic acids - store hereditary information

Which of the following conclusions can be drawn from this graph?

The optimum pH of the enzyme is 6.6.

The optimum pH of the enzyme is 5.8

The enzyme’s activity increases as pH increases 5.0 to 9.0

The enzyme’s activity is greater around pH of 8.0 .

Which is true about the structure of starch molecules and protein molecules?

Starches and proteins are both polymers.

Starches and proteins are both amino acids.

Starches and proteins are both built from simple sugars.

Starches and proteins are both built from nucleic acids.

Which is a function of lipids?

to provide the body with insulation

to supply cells with quick–release energy

Which is a least likely primary function of proteins?

to build and repair damaged cells

to defend against foreign invaders

Which of these statements describes how monomers combine and create macromolecules?

Amino acids combine to make proteins.

Glucose molecules combine to make nucleic acids.

Nucleic acids combine to make starch.

Proteins combine to make glucose.

Look at the picture. Which part of the phospholipid molecules if hydrophilic?

Head (glycerol+phosphate group)

Which factors can cause denaturation of proteins?

Freezing or sugar concentration

Molecules of Life

10th - 11th Grade

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50 Qs

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Molecules of Life

Quiz

•

Biology, Science

•

10th - 11th Grade

•

Practice Problem

•

Easy

•

NGSS

HS-LS1-1, HS-LS1-6, HS-PS1-2

Standards-aligned

Marc Regier

Used 10+ times

FREE Resource

50 questions

Show all answers

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

The type of polysaccharide which serves as a strengthening tissue in the cell wall of plants is

cellulose

glucose

lactose

fructose

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Carbohydrates are made of...

C H O

C H O N

C H O N P

C H O N S

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Glucose is a _____.

carbohydrate

lipid

protein

nucleic acid

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Proteins are composed of what smaller building blocks?

amino acids

nucleic acids

fatty acids

nucleotides

Also known as simple sugars, these are the monomers of carbohydrates.

lipids

nucleotide

monosaccharide

monomer

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Building blocks of polymers.

monomer

polypeptide

monosaccharide

glycerol

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Water is classified as an inorganic compound because it

does not contain carbon

does not contain nitrogen

contains hydrogen

contains oxygen

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Molecules of Life

50 questions

The type of polysaccharide which serves as a strengthening tissue in the cell wall of plants is

Carbohydrates are made of...

Glucose is a _____.

Proteins are composed of what smaller building blocks?

Also known as simple sugars, these are the monomers of carbohydrates.

Building blocks of polymers.

Water is classified as an inorganic compound because it

Which statement describes all enzymes?

In the reaction illustrated in the diagram below, which structure represents the enzyme?

In which type of molecule is the ratio of hydrogen to oxygen usually 2 to 1?

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