Exam 2

Question 1

Which of the following is not one of the four major groups of macromolecules found in living organisms

Answer 1

Glucose

Question 2

Polymers of polysaccharides, fats, and proteins are all synthesized from monomers by which process

Answer 2

The removal of water, dehydration reactions

Question 3

Which of the following best summarizes the relationship between dehydration reactions and hydrolysis?

Answer 3

Dehydration reactions assemble polymers, and hydrolysis breakdown polymers

Question 4

Lactose, as sugar and milk, is composed of one glucose molecule joined by a Glycosidic linkage so want to galactose molecule. How is lactose classified?

Answer 4

As a disaccharide

Question 5

Which of the following are polysaccharides?

Answer 5

A,B, and C

Question 6

Which of the following is true of both starch and cellulose?

Answer 6

They are both polymers of glucose

Question 7

Which of the following is true of cellulose?

Answer 7

It is a major structural component of plant cell walls

Question 8

Humans can digest starch but not cellulose because

Answer 8

Humans have enzymes that can hydrolyze the Alpha glycosidic linkages of storage but not the beta glycosidic linkages of glucose

Question 9

Which of the following is true for the class of large biological molecules known as lipids?

Answer 9

A, B, and C are correct

Question 10

If____functional group is at the end of a carbon skeleton in the molecule is called an aldehyde

Answer 10

Carbonyl

Question 11

Which of these functional groups does not contain oxygen?

Answer 11

Sulfhydryl

Question 12

Which is the best description of a methyl group?

Answer 12

A carbon joined to three hydrogens by single covalent bonds

Question 13

Which is the best description of a hydroxyl group?

Answer 13

An oxygen joined to a hydrogen by a single covalent bond

Question 14

Which is the best description of a carboxyl group?

Answer 14

A carbon atom join to an oxygen by a double covalent bond and a hydroxyl group

Question 15

Which is the best description of a carbonyl group?

Answer 15

A carbon atom joined to an oxygen by a double covalent bond

Question 16

Which of the following contains nitrogen in addition to carbon, oxygen, and hydrogen?

Answer 16

And amino acids such as glycine

Question 17

Given the reaction galactose + glucose= lactose + water, galactose is a

Answer 17

Monomer

Question 18

Which of the following is an example of polysaccharide?

Answer 18

Starch

Question 19

The major carbohydrate energy storage molecules in plants is

Answer 19

Starch

Question 20

The major carbohydrate energy storage molecules and animals is

Answer 20

Glycogen

Question 21

Which functional groups can act as acids

Answer 21

Carboxyl and phosphate

Question 22

Carbons of a saturated fatty acid has more____Atoms then an unsaturated fatty acid of equal length

Answer 22

H

Question 23

Compared to fats containing saturated fatty acid’s that’s concerning unsaturated fatty acid’s will

Answer 23

Be liquid at a lower temperature

Question 24

Hey small group of atoms on molecules that usually participate in chemical reactions are called

Answer 24

Functional groups

Question 25

The type of bond that holds glycerol and fatty acid molecules together to form a lipid is called a

Answer 25

Ester

Question 26

Which of the following are isomers?

Answer 26

Glucose and fructose

Question 27

The type of bond that holds two sugar molecules together to form a polysaccharide is called a

Answer 27

Glycosidic

Question 28

The breaking a part of a macromolecule to form two or more smaller molecules is a process called

Answer 28

Hydrolysis

Question 29

Amino acid chain that forms a zigzag pattern is an example of a secondary protein structure called

Answer 29

Betas sheet

Question 30

A chain of amino acids that is wanted to single coil stranded in example of a secondary protein structure called a

Answer 30

Alpha helix

Question 31

The fitting together of two or more folded subunits of the polypeptide chain is this level of protein structure called the

Answer 31

Quaternary

Question 32

The overall three-dimensional folding of the polypeptide chain of a protein comprises its ___ structure

Answer 32

Tertiary

Question 33

A chemist wishes to make an organic molecule less acidic. Which of the following functional groups should be added to the molecule in order to do so

Answer 33

Amino

Question 34

The individual chemical property of each amino acid is determined by

Answer 34

The properties of the side chains

Question 35

What protein in the human body is responsible for the transport of oxygen in the blood?

Answer 35

Hemoglobin

Question 36

Molecules that each consist of a nitrogen containing a romantic ring compound, as sugar, and a molecule of phosphoric acid are

Answer 36

Nucleotides

Question 37

Polymers of nucleotides are called

Answer 37

Nucleic acid

Question 38

The linear/long sequence of monomers in a polypeptide chain is referred to as it's

Answer 38

Primary

Question 39

Which of the following functional groups are always found in amino acids

Answer 39

Carboxyl and amino

Question 40

Destruction of a proteins shape it's called

Answer 40

Denaturation

Question 41

___Is the monomers for a carbohydrate

Answer 41

Monosaccharide

Question 42

Which of the following is not a nucleotide found in RNA?

Answer 42

Thymine

Question 43

A carbon skeleton is covalently bonded to both an amino group and a carboxyl group. When placed in water it

Answer 43

Would function as both an acid and a base

Question 44

How does RNA differ from DNA

Answer 44

RNA contains uracil;DNA contains thymine

Question 45

Which of the following is true about the carbon atoms present in all organic molecules

Answer 45

A, B, and C are correct

Question 46

What is the reason why hydrocarbons are not soluble in water

Answer 46

The majority of their bonds or nonpolar covalent carbon to hydrogen linkages

Question 47

Which of the following is true of geometric isomers

Answer 47

They have variations in arrangement around a double bond

Question 48

Research suggests that side effects from Ridellan the drug used to treat attention deficit disorder may be caused by contamination of enantiomers or molecules that

Answer 48

Are mirror images of one another

Question 49

A compound contains hydroxyl groups as it's predominate functional group. Which of the following statements is true concerning this compound?

Answer 49

It should dissolve in water