Midterm 1

Question 1

What is biochemistry?

Answer 1

The study of living things at the molecular level

Question 2

Why are cells the fundamental unit of life?

Answer 2

Carry genetic information in the form of DNA respond to stimuli and reproduce through cell division

Question 3

What are the biopolymers?

Answer 3

Proteins, nucleic, acids, lipids, carbohydrates

Question 4

Why are chemical bonds important

Answer 4

The macromolecules responsible for cellular structure and function are mad up of many thousands of adoms, held together by covalent bonds

Question 5

What is a covalent bond

Answer 5

Strong Bond that holds molecules together

Question 6

What is a noncovalent bond

Answer 6

Weaker bonds between ions and parts of molecules

Question 7

Carbon carbon bonds and carbon hydrogen

Answer 7

They are strong
Sharing of eletrons

Question 8

Intermolecular interaction

Answer 8

Between molecules

Question 9

Intramolecular interactions

Answer 9

Within molecules

Question 10

Electrostatic interactions

Answer 10

Between oppositely charged species

Question 11

Why are noncovalent bonds important

Answer 11

Because they can be broken and reformed

Question 12

Whats a strong acid/base

Answer 12

Completely dissociates

Question 13

What is a weak acid / base

Answer 13

Dissociates only partly into protons + acceptors

Question 14

Charge- charge

Answer 14

1/r

Question 15

Charge - dipole

Answer 15

1/r^2

Question 16

Dipole- dipole

Answer 16

1/r^3

Question 17

Charge - induced diapole

Answer 17

1/r^4

Question 18

Dipole induced diapole

Answer 18

1/r^5

Question 19

What is ionization

Answer 19

Procces by which a adom or molecule gains a negative or positive charge by gaining or loosing electrons

Question 20

What is ph

Answer 20

The acidity of a solution

Question 21

Why study ph

Answer 21

Critical for life balance

Question 22

Acids and bases do what in water

Answer 22

Ionize

Question 23

What are acids

Answer 23

Proton donating molecules

Question 24

What are bases

Answer 24

Proton acceptors

Question 25

What is a strong acid / base

Answer 25

Dissociates almost completely into protons

Question 26

What is a weak acid \ base

Answer 26

Dissociates only partially into protons

Question 27

What is the equilibrium constant

Answer 27

K = product/ reactants

Question 28

Percent inozation of a weak acid base

Answer 28

A-
—- X 100%
HA ( initial)

Question 29

Importance of buffers

Answer 29

Resists ph change
Maintains homeostasis in living systems