Question 1

A(n) ________ consists of many monomer subunits bonded together in order to produce a large molecule.

Accepted Answer

The answer of A(n) ________ consists of many monomer subunits...

Question 2

A(n) ________ is a type of polymer that helps in support, transport, and movement in the body.

Accepted Answer

The answer of A(n) ________ is a type of polymer...

Question 3

An organic compound that provides instructions for the synthesis or production of polypeptide chains is referred to as which of the following?

Accepted Answer

A)  nucleotide 
B)  lipids 
C)  ATP 
D)  DNA

Question 4

A(n) ________ is a substance that accepts hydrogen ions or, when it dissociates in water, will give off hydroxide ions.

Accepted Answer

The answer of A(n) ________ is a substance that accepts...

Question 5

You have information about a particle that contains 7 protons, 8 neutrons, and 8 electrons. Which of the following statements would be true?

Accepted Answer

A)  It has an atomic weight of 23. 
B)  It is an ion. 
C)  It has 8 electrons in its outermost shell. 
D)  It has an atomic number of 15.

Question 6

A(n) ________ is a nonprotein substance that aids in forming the enzyme-substrate complex in metabolic reactions.

Accepted Answer

The answer of A(n) ________ is a nonprotein substance that...

Question 7

Which of the following is not found in ATP?

Accepted Answer

A)  a nitrogen-containing base 
B)  a sugar 
C)  a phosphate group 
D)  All of these are found in ATP.

Question 8

Your roommate is experiencing heartburn and asks you to purchase her an antacid. Chemically speaking, how do you know that the antacid will help eliminate her pain?

Accepted Answer

A)  It is a buffer and will prevent the pH in her digestive tract from changing. 
B)  It has a higher OH- concentration to increase the pH in her digestive tract. 
C)  It is probably high in H+. 
D)  It has a low pH to balance the acidity in her digestive tract.

Question 9

Dipeptidase is an enzyme found in your small intestine that helps break polypeptides down. What would its most likely products be?

Accepted Answer

A)  amino acids 
B)  proteins 
C)  triglycerides 
D)  oligosaccharides

Question 10

Match between columns
                        Premises: Weak bonds that function to stabilize proteins and nucleic acids such as DNA.
The site where a substrate binds to an enzyme.
The overall three-dimensional shape of a protein.
A process that causes a three-dimensional protein to change shape, resulting in the loss of biological function.
The smallest molecular units of carbohydrates, also known as simple sugars.
A substance made up of two or more elements whose properties are usually different from those of either of the two original substances.
The tendency of a molecule to have positive and negative regions.
Lipid molecules composed of one glycerol and three fatty acids that can be saturated, unsaturated, or polyunsaturated.
The basic monomer of a protein that can be joined by peptide bonds using dehydration synthesis reactions.
A pure form of matter that cannot be broken down to simpler forms.

Accepted Answer

The Answer of Compound and Tertiary structure and Triglycerides and is...

Question 11

Your friend tells you that all dietary fat is bad for your health. Is this correct?

Accepted Answer

The answer of Your friend tells you that all dietary...

Question 12

Within your body, there are two major categories of hormones. One category is the steroid (or lipid-soluble) hormones, and the other category is referred to as nonsteroid (or water-soluble) hormones, which are composed of proteins or, in some cases, just amino acids. Estrogen and testosterone are examples of steroid hormones, whereas insulin is an example of a nonsteroid hormone. A researcher heats estrogen, testosterone, and insulin to a very high temperature. After heating the hormones, the researcher tests to determine whether they still work properly. She finds that estrogen and testosterone still function, but insulin does not. Based on the chemical nature of these molecules, explain why insulin no longer functions.

Accepted Answer

The answer of Within your body, there are two major...

Question 13

An element with more or fewer neutrons than the same element as it appears on the periodic table is known as which of the following?

Accepted Answer

A)  ion 
B)  buffer 
C)  isotope 
D)  isomer

Question 14

Atoms that have the same number of protons but differ in the number of neutrons are called ________.

Accepted Answer

The answer of Atoms that have the same number of...

Question 15

The ________ can be used to measure whether a substance is an acid or a base.

Accepted Answer

The answer of The ________ can be used to measure...

Exam 3: Chemistry Comes to Life