LAB 4

Question 1

When a water molecule is produced as the smaller subunits are bonded together.

Answer 1

Dehydration Reaction

Question 2

Where a water molecule is added as the bonds between subunits are split.

Answer 2

Hydrolysis Reactions

Question 3

A substance known to give a positive result

Answer 3

Positive Control

Question 4

A substance known to give a negative result

Answer 4

Negative control

Question 5

Proteins that speed chemical reactions. Most of these end in the letters “ase”.

Answer 5

Enzymes

Question 6

Proteins are made of these joined together.

Answer 6

Amino Acids

Question 7

A chain of two or more amino acids is called a what?

Answer 7

Peptide

Question 8

The bond between the amino acids is called a what?

Answer 8

Peptide Bond

Question 9

A very long chain of amino acids

Answer 9

Polypeptide

Question 10

What color does Biuret Reagent turn when reacting to proteins and/or peptides?

Answer 10

Purple for proteins, pinkish-purple for Peptides

Question 11

Sugars and molecules that are chains of sugars.

Answer 11

Carbohydrates

Question 12

Only has one sugar unit

Answer 12

Glucose

Question 13

Has two sugar units, is a disaccharide

Answer 13

Maltose

Question 14

What color does iodine solution turn when reacting to starch?

Answer 14

Blue-black

Question 15

What color does Benedict’s turn when reacting to sugars?

Answer 15

Yellow-orange or orange-red