Chapter 2

Question 1

Merging property

Answer 1

Membranes are interchangeable with each other

Question 2

Extracellular matrix

Answer 2

proteins outside of the cell

Question 3

What is the ECM for

Answer 3

sensing and communication

Question 4

Hydrophilic proteins must travel in vesicles

Answer 4

False

Question 5

Lyposome

Answer 5

Equivalent of vesicle

Question 6

How do senses work

Answer 6

through proteins (receptors)

Question 7

Phage

Answer 7

A cell that does a lot of phagocytosis
Ex: WBC

Question 8

Weak bonds permit what

Answer 8

Interactions of biomolecules to allow life processes

Question 9

1 Angstrom

Answer 9

Distance of a covalent bond with an H atom
0.1 nm

Question 10

Brownian motion

Answer 10

Movement powered by random fluxes in enviro energy

Question 11

Thermal movement

Answer 11

Constant movement causes disorder and energy loss

Question 12

More disordered = Less likely to react

Answer 12

False

Question 13

Why do most biochemical reactions happen in aqueous solution

Answer 13

Water is stable and polar

Question 14

Hydrophilicity is the same as being polar

Answer 14

True

Question 15

Do hydrocarbons have a partial charge

Answer 15

No, so they are hydrophobic

Question 16

If there is an N or O in a functional group of a hydrocarbon the molecule will remain non-polar

Answer 16

False

Question 17

What type of strong bond can water create

Answer 17

Hydrogen bonds

Question 18

How many H bonds can water make

Answer 18

4

Question 19

What is an H bond donor

Answer 19

A molecule that gives up its H to a lone pair

Question 20

Cohesion

Answer 20

Self connection

Question 21

Ubiquitous solvent

Answer 21

Water
Dissolves many solutes

Question 22

Detergent

Answer 22

Acts as a bridge between hydrophobics and hydrophilics

Question 23

Weak interactions allow for

Answer 23

reversable reactions

Question 24

Electrostatic interactions happen between

Answer 24

charged molecules

Question 25

Other names for electrostatic interactions

Answer 25

Ionic bonds Salt Bridges

Question 26

Coulombs law

Answer 26

Energy of electrostatic interaction

Question 27

Water has what effect on electrostatic interactions

Answer 27

It weakens them because it has a higher dielectric constant

Question 28

Crystal latice

Answer 28

the stable form of a solid substance

Question 29

What does water do to a crystal latice

Answer 29

it creates bonds with the ions involved using its positive and negative sides to disovle the latice

Question 30

Does water stabilize or destabilize an ionic compound

Answer 30

It destabilizes the latice but stabilizes the ions

Question 31

What does heating do to a substance

Answer 31

Increase the movement of particles

Question 32

What does increased particle movement mean

Answer 32

Higher entropy

Question 33

What does higher entropy mean

Answer 33

More dissorder

Question 34

What does more disorder mean

Answer 34

Weaker bonds/atom interactions

Question 35

What are acids

Answer 35

Compounds that lose a proton during a reaction

Question 36

What are bases

Answer 36

Compounds that receive a proton during a reaction

Question 37

What is a conjugate acid

Answer 37

A base that has gained a proton

Question 38

What is a conjugate base

Answer 38

an acid that has lost a proton

Question 39

How does water disrupt hydrogen bonds

Answer 39

by replacing the existing compounds to create new H bonds

Question 40

Van der Waals interactions

Answer 40

Asymmetry of a molecule induces neighboring asymmetry

Question 41

What does Asymmetry do to molecules

Answer 41

Create a positive and negative side to the molecule that attract each other

Question 42

What do Van der Waals forces rely on

Answer 42

Distance between molecules

Question 43

What is the ideal distance for van der waals forces

Answer 43

3 Angstrom

Question 44

The lowest energy gives rise to

Answer 44

the most stable molecule positioning

Question 45

What does the lowest energy have to do with distance

Answer 45

The lowest energy is at the ideal distance to create a stable bond

Question 46

What does SA have to do with Van der Waals interactions

Answer 46

More SA = more ability for interactions = more strong bonding

Question 47

What are some key points about DNA base pairing

Answer 47

A with T (2 bonds) C with G (3 bonds)

Question 48

When a substance is dissolved the solvent has high entropy

Answer 48

False The solute has high entropy and the solvent has low entropy

Question 49

When a substance is precipitated it has low entropy

Answer 49

True The solvent has high entropy

Question 50

The strongest IM force

Answer 50

Electrostatic

Question 51

The 2nd strongest IM force

Answer 51

H bonding

Question 52

The weakest IM force

Answer 52

Van der Waals

Question 53

Why does the hydrophobic effect take place

Answer 53

The entropy of water increases when a hydrophobic substance clumps

Question 54

When something dissolves in water water gains freedom

Answer 54

False

Question 55

Bioassembling

Answer 55

The process of molecules clotting (Hydrophobic effect)

Question 56

Polar molecules force water to have less freedom

Answer 56

False, they give more freedom which is what causes hydrophobic molecules to internalize

Question 57

What are salt bridges for in hydrophobic interaction

Answer 57

They take place of hydrogen bonds after folding has occurred STABALIZERS