AP unit 1 CH1-4

Question 1

Choose the answer that best describes HCO3-.

Answer 1

bicarbonate ion

Question 2

Which property of water is demonstrated when we sweat?

Answer 2

Which of the following is a neutralization reaction?

Question 3

Which of the following is a neutralization reaction?

Answer 3

HCl + NaOH → NaCl + H2O

Question 4

The numbers listed represent the number of electrons in the first, second, and third energy levels, respectively. On this basis, which of the following is an unstable or reactive atom?

Answer 4

2, 8, 1

Question 5

Carbohydrates and proteins are built up from their basic building blocks by the ________.

Answer 5

removal of a water molecule between each two units

Question 6

What happens in redox reactions?

Answer 6

both decomposition and electron exchange occur

Question 7

Which of the following statements is false?

Answer 7

Larger particles move faster than smaller ones and thus collide more frequently and more forcefully.

Question 8

Two good examples of a colloid would be Jell-O® and ________.

Answer 8

cytosol

Question 9

An example of a coenzyme is ________.

Answer 9

riboflavin (vitamin B2)

Question 10

Atom X has 17 protons. How many electrons are in its valence shell?

Answer 10

7

Question 11

A chemical reaction in which bonds are broken is usually associated with ________.

Answer 11

the release of energy

Question 12

Salts are always ________.

Answer 12

ionic compounds

Question 13

What is a dipole?

Answer 13

a polar molecule

Question 14

Choose the statement that is false or incorrect.

Answer 14

A key feature of the body’s metabolism is the almost exclusive use of exergonic reactions by the body.

Question 15

What does CH4 mean?

Answer 15

There is one carbon and four hydrogen atoms.

Question 16

Select the most correct statement regarding nucleic acids

Answer 16

DNA is a long, double-stranded molecule made up of A, T, G, and C bases.

Question 17

Select which reactions will usually be irreversible regarding chemical equilibrium in living systems.

Answer 17

glucose to CO2 and H2O

Question 18

________ is fat soluble, produced in the skin on exposure to UV radiation, and necessary for normal bone growth and function.

Answer 18

Vitamin D

Question 19

Carbohydrates are stored in the liver and muscles in the form of ________.

Answer 19

glycogen

Question 20

What is the ratio of fatty acids to glycerol in neutral fats?

Answer 20

3:1

Question 21

The four elements that make up about 96% of body matter are ________.

Answer 21

carbon (C), oxygen (O), hydrogen (H) and nitrogen (N)

Question 22

Which statement about enzymes is false?

Answer 22

Enzymes raise the activation energy needed to start a reaction.

Question 23

Choose the statement that is false or incorrect.

Answer 23

A key feature of the body’s metabolism is the almost exclusive use of exergonic reactions by the body.

Question 24

Which of the following is an example of a suspension?

Answer 24

blood

Question 25

Which of the following would be regarded as an organic molecule?

Answer 25

CH4

Question 26

Which property of water is demonstrated when we sweat?

Answer 26

high heat of vaporization

Question 27

Heat shock proteins (hsp) are a type of protein called ________.

Answer 27

chaperonins

Question 28

An example of a coenzyme is ________.

Answer 28

riboflavin (vitamin B2)

Question 29

A chemical reaction in which bonds are broken is usually associated with ________.

Answer 29

the release of energy

Question 30

Which of the following is not considered a factor in influencing a reaction?

Answer 30

time

Question 31

Which protein types are vitally important to cell function in all types of stressful circumstances?

Answer 31

molecular chaperones

Question 32

Which statement about enzymes is false?

Answer 32

Enzymes raise the activation energy needed to start a reaction

Question 33

Which of the following is not true of proteins?

Answer 33

They appear to be the molecular carriers of the coded hereditary information.

Question 34

Which statement about enzymes is false?

Answer 34

Enzymes raise the activation energy needed to start a reaction.

Question 35

Which of the following is not a role of molecular chaperonins?

Answer 35

act as a biological catalyst