Quiz 2

Question 1

Inorganic and organic compounds differ in that:

Inorganic molecules are usually large and complex

Inorganic molecules are are usually small but complex

Inorganic compounds usually lack carbon

Inorganic compounds usually contain carbon

Answer 1

Inorganic compounds usually lack carbon

Question 2

These can protect and insulate, serve as building blocks for some hormones, provide and store energy, and provide cell membrane components.

Carbohydrates

Proteins

Inorganic compounds

Lipids

Answer 2

Lipids

Question 3

These are large molecules that contain carbon, hydrogen, oxygen, nitrogen, and sometimes sulfur, that can be formed by joining amino acids in stepwise fashion by using dehydration synthesis to form peptide bonds.

Proteins

Inorganic compounds

Lipids

Carbohydrates

Answer 3

Proteins

Question 4

A catalyst would lower the activation energy of a reaction.

True
False

Answer 4

True

Question 5

A stick of dynamite would be an example of what type of energy?

Chemical

Potential

Answer 5

Potential

Question 6

Dehydration synthesis and hydrolysis reactions both involve water molecules.

True
False

Answer 6

True

Question 7

The synthesis reactions that take place in the body are referred to as ________ reactions while the decomposition reactions are referred to as _______ reactions.

Catabolic; anabolic

Anabolic; catabolic

Exergonic; endergonic

Endergonic; exergonic

Answer 7

Anabolic; catabolic

Question 8

In a chemical reaction, the total mass of reactants equals the total mass of products.

True
False

Answer 8

True

Question 9

Water is important in the body because:

It participates in hydrolysis and dehydration synthesis reactions.

It lubricates.

It is an excellent solvent and suspending medium.

It helps to maintain homeostasis because it has a high heat capacity and high heat of vaporization.

All choices are correct.

Answer 9

All choices are correct.

Question 10

Bicarbonate ions regulate the concentration of hydrogen ions in the body by removing excess hydrogen ions or by adding hydrogen ions.

True
False

Answer 10

True