Question 1

Which of the following is an example of a lipid?

Accepted Answer

A)  cholesterol 
B)  cellulose 
C)  keratin 
D)  chitin 
A)  cholesterol 
B)  cellulose 
C)  keratin 
D)  chitin A

Question 2

Match the following.
A) DNA
B) lipoproteins
C) glycoproteins
D) polysaccharide
E) structural proteins
-Transport fats throughout the body

Accepted Answer

B

Question 3

Which of the following are polysaccharides?

Accepted Answer

A)  sucrose and glucose 
B)  fructose and deoxyribose 
C)  DNA and RNA 
D)  starch and glycogen 
A)  sucrose and glucose 
B)  fructose and deoxyribose 
C)  DNA and RNA 
D)  starch and glycogen D

Question 4

Cholesterol is used to make other steroids in the body.

Accepted Answer

A) True 
 B)False

Question 5

Most enzymes are proteins, but not all proteins are enzymes.

Accepted Answer

A) True 
 B)False

Question 6

Match the following.
A) DNA
B) lipoproteins
C) glycoproteins
D) polysaccharide
E) structural proteins
-The primary information-bearing molecule of life

Accepted Answer

The answer of Match the following.
A) DNA
B) lipoproteins
C) glycoproteins
D) polysaccharide
E)...

Question 7

Every protein has a unique shape and function because:

Accepted Answer

A)  each protein has a unique sequence of nucleotides. 
B)  each protein has a unique sequence of amino acids. 
C)  the bonds between the amino acids vary from protein to protein. 
D)  the number of nitrogen atoms in each amino acid differs. 
A)  each protein has a unique sequence of nucleotides. 
B)  each protein has a unique sequence of amino acids. 
C)  the bonds between the amino acids vary from protein to protein. 
D)  the number of nitrogen atoms in each amino acid differs.

Question 8

In the following chemical reaction, which molecule is the disaccharide? glucose + fructose → sucrose + water

Accepted Answer

A)  sucrose 
B)  glucose 
C)  water 
D)  fructose 
A)  sucrose 
B)  glucose 
C)  water 
D)  fructose

Question 9

The two chains of nucleotides in a DNA molecule are held together by:

Accepted Answer

A)  covalent bonds. 
B)  ionic bonds. 
C)  hydrogen bonds. 
D)  peptide bonds. 
E)  hydrophobic interactions. 
A)  covalent bonds. 
B)  ionic bonds. 
C)  hydrogen bonds. 
D)  peptide bonds. 
E)  hydrophobic interactions.

Question 10

Butter, which is made from milk fat, tends to be harder at room temperature than most margarines. If you wanted to make a butter that is softer at room temperature, you should consider:

Accepted Answer

A)  making the fatty acid chains longer. 
B)  making fatty acid chains with fewer kinks. 
C)  creating more double bonds in the fatty acid chains. 
D)  saturating the fatty acid chains. 
E)  adding more than three fatty acid chains to the triglycerides. 
A)  making the fatty acid chains longer. 
B)  making fatty acid chains with fewer kinks. 
C)  creating more double bonds in the fatty acid chains. 
D)  saturating the fatty acid chains. 
E)  adding more than three fatty acid chains to the triglycerides.

Question 11

Glycogen is the carbohydrate found in plant cell walls.

Accepted Answer

A) True 
 B)False

Question 12

Lipids with carbon-carbon double bonds tend to be more solid at room temperature.

Accepted Answer

A) True 
 B)False

Question 13

Ribosomes are made up of protein and ________.

Accepted Answer

The answer of Ribosomes are made up of protein and...

Question 14

Hydroxyl groups are functional groups found on amino acids.

Accepted Answer

A) True 
 B)False

Question 15

The difference between one amino acid and another is the:

Accepted Answer

A)  number of amino and carboxyl groups each contains. 
B)  number of R groups each contains. 
C)  type of R group each contains. 
D)  way their amino groups bond with carboxyl groups. 
E)  difference in the chemical properties of their amino and carboxyl groups. 
A)  number of amino and carboxyl groups each contains. 
B)  number of R groups each contains. 
C)  type of R group each contains. 
D)  way their amino groups bond with carboxyl groups. 
E)  difference in the chemical properties of their amino and carboxyl groups.

Question 16

Alpha helices and beta pleated sheets are examples of:

Accepted Answer

A)  primary structure. 
B)  secondary structure. 
C)  tertiary structure. 
D)  quaternary structure. 
A)  primary structure. 
B)  secondary structure. 
C)  tertiary structure. 
D)  quaternary structure.

Question 17

Which of the following is true of cellulose?

Accepted Answer

A)  Plants store glucose as cellulose. 
B)  Animals store glucose as cellulose. 
C)  Plants store amino acids as cellulose. 
D)  Plants' cell walls are made up of cellulose. 
A)  Plants store glucose as cellulose. 
B)  Animals store glucose as cellulose. 
C)  Plants store amino acids as cellulose. 
D)  Plants' cell walls are made up of cellulose.

Question 18

Both men and women make testosterone.

Accepted Answer

A) True 
 B)False

Question 19

You have a genetic defect that prevents your cells from making the amino acid tryptophan from indole and serine. Your cells might be lacking the proper information in their ________, which would direct the synthesis of the ________ that catalyzes tryptophan synthesis.

Accepted Answer

The answer of You have a genetic defect that prevents...

Question 20

Butane and isobutane are isomers. This means they have the same:

Accepted Answer

A)  arrangement of atoms but a different chemical formula. 
B)  number of carbon atoms but different numbers of hydrogen atoms. 
C)  chemical formula but a different arrangement of atoms. 
D)  chemical formula but can only exist as ring structures. 
A)  arrangement of atoms but a different chemical formula. 
B)  number of carbon atoms but different numbers of hydrogen atoms. 
C)  chemical formula but a different arrangement of atoms. 
D)  chemical formula but can only exist as ring structures.

Exam 3: Lifes Components: Biological Molecules

Which of the following is an example of a lipid?

Match the following. A) DNA B) lipoproteins C) glycoproteins D) polysaccharide E) structural proteins -Transport fats throughout the body

Which of the following are polysaccharides?

Cholesterol is used to make other steroids in the body.

Most enzymes are proteins, but not all proteins are enzymes.

Match the following. A) DNA B) lipoproteins C) glycoproteins D) polysaccharide E) structural proteins -The primary information-bearing molecule of life

Every protein has a unique shape and function because:

In the following chemical reaction, which molecule is the disaccharide? glucose + fructose → sucrose + water

The two chains of nucleotides in a DNA molecule are held together by:

Butter, which is made from milk fat, tends to be harder at room temperature than most margarines. If you wanted to make a butter that is softer at room temperature, you should consider:

Glycogen is the carbohydrate found in plant cell walls.

Lipids with carbon-carbon double bonds tend to be more solid at room temperature.

Ribosomes are made up of protein and ________.

Hydroxyl groups are functional groups found on amino acids.

The difference between one amino acid and another is the:

Alpha helices and beta pleated sheets are examples of:

Which of the following is true of cellulose?

Both men and women make testosterone.

You have a genetic defect that prevents your cells from making the amino acid tryptophan from indole and serine. Your cells might be lacking the proper information in their ________, which would direct the synthesis of the ________ that catalyzes tryptophan synthesis.

Butane and isobutane are isomers. This means they have the same:

Science As a Way of Learning: a Guide to the Natural World

Fundamental Building Blocks: Chemistry, Water, and Ph

Lifes Home: the Cell

Lifes Border: the Plasma Membrane

Lifes Mainspring: an Introduction to Energy

Vital Harvest: Deriving Energy From Food

The Green Worlds Gift: Photosynthesis

The Links in Lifes Chain: Genetics and Cell Division

Preparing for Sexual Reproduction: Meiosis

The First Geneticist: Mendel and His Discoveries

Units of Heredity: Chromosomes and Inheritance

Passing on Lifes Information: Dna Structure and Replication

How Proteins Are Made: Genetic Transcription, Translation, and Regulation

The Future Isnt What It Used to Be: Biotechnology

An Introduction to Evolution: Charles Darwin, Evolutionary Thought, and the Evidence for Evolution

The Means of Evolution: Microevolution

The Outcomes of Evolution: Macroevolution

A Slow Unfolding: the History of Life on Earth

Arriving Late, Traveling Far: the Evolution of Human Beings

Viruses, Bacteria, Archaea, and Protists: the Diversity of Life 1

Fungi : the Diversity of Life 2

Animals: the Diversity of Life 3

Plants: the Diversity of Life 4

The Angiosperms: Form and Function in Flowering Plants

Body Support and Movement: the Integumentary, Skeletal, and Muscular Systems

Communication and Control 1: the Nervous System

Communication and Control 2: the Endocrine System

Defending the Body: the Immune System

Transport and Exchange 1: Blood and Breath

Transport and Exchange 2: Digestion, Nutrition, and Elimination

An Amazingly Detailed Script: Animal Development

How the Baby Came to Be: Human Reproduction

An Interactive Living World 1: Populations in Ecology

An Interactive Living World 2: Communities in Ecology

An Interactive Living World 3: Ecosystems and Biomes

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You have a genetic defect that prevents your cells from making the amino acid tryptophan from indole and serine. Your cells might be lacking the proper information in their , which would direct the synthesis of the that catalyzes tryptophan synthesis.