AAMC FL#1 CHEM/PHYS

Question 1

in chromatography, the higher the absorption for the stationary phase, the _________ the molecule will move

Answer 1

slower

Question 2

celluloase is a very ___

Answer 2

polar

Question 3

what polarity is the stationary phase (reg)

Answer 3

polar - silica, or cellulose

Question 4

in chroma what is principal factor determining the migration of individual components in sample

Answer 4

H bonds

Question 5

what polarity will travel the furthest in chroma

Answer 5

non polar

Question 6

what will affect the amount of each component in chroma that can be fully separated

Answer 6

thickness of paper

Question 7

in chorm the staniary phase has no

Answer 7

concentration as its immobolized

Question 8

what assumption, made if aspartic acid formed by prebiological synthesis - need to choose answer where somehitng comes before for ex.

Answer 8

compound A and cynaide was found on primitive earth

Question 9

these alcohols readily dehydrate

Answer 9

tertiary - E1

Question 10

during dehydration a ____ forms

Answer 10

carbocation

Question 11

if there is formation of 2 products (cis/trans) then the reaction is NOT

Answer 11

stereospecific

Question 12

what group is formed when aspartic acid reacts with another amino acid to form a peptide bond

Answer 12

amide group

Question 13

the more substituded C-O bond is

Answer 13

weaker

Question 14

at a secondayr carbon (2 pentaol) there is more ____ than 1 pentanol, causing for a ___ reaction substituion rate

Answer 14

sterin hindrance and slower

Question 15

in gas chroma, molecules with low bp will elute

Answer 15

first has london dispersion forces

Question 16

chlorine, bromins, alchols more _than alkenes

Answer 16

polar

Question 17

deuterium is

Answer 17

hydrogen - more neutrons

Question 18

to determine which reactant loses the OH group, want to ____ either of the oxygen

Answer 18

label - it specifically (OH group)

Question 19

negative sign of lens strength is indicative of what lens

Answer 19

diverging

Question 20

ES complex lowers the ____ and promotes is rapid progression by provinf certian or chem groups to form _____ bonds

Answer 20

AE, covalent

Question 21

with enzymes stabalization of _______ changes the AE of the rx

Answer 21

transition state

Question 22

acetic acid is (strong/weak)

Answer 22

weak

Question 23

to dec the percentage ionization of acetic acid you need to

Answer 23

add more acid - strong acid, so equilibrium will shift left, if we dilute or add base, or chlorinate (neg sign) then it will actually increase % ion,

Question 24

what is formula for the index of refraction

Answer 24

n = c/v - speed of light/speed on fluid

Question 25

the intensity of the radiatio emitted by the oxygen sensor is directly porportional to

Answer 25

the photons emitted

Question 26

if multiple photons emitted then it will

Answer 26

increase the intensity

Question 27

intensity of radiation is not related to/direct porportional to

Answer 27

speed, wavelength, and polarization

Question 28

THZ = HZ

Answer 28

1 THz = 1x10^12 Hz

Question 29

what is standard atomospheric pressure

Answer 29

760 mmHg

Question 30

whne half life questions and ask for how much DECAYS IT WILL BE

Answer 30

the most, 31/32 for ex, 1/32 is remaining (decay vs remaining)

Question 31

formula for work

Answer 31

= Power X time = Fd = -PV = -U =KE

Question 32

For work, when we calculate power vs time - use the whole time

Answer 32

10 min = 600s

Question 33

cysteine residues oxidize to form ___ and how do we break these bonds

Answer 33

disulfie bonds, reducing agent

Question 34

this bonding does not really enhance the rigidity of a micelle as much as intermolecular cross links

Answer 34

INTRA covalent bonding

Question 35

when residues wnat to particapte in adhesion we want to have

Answer 35

electrostatic interactions - have side chain - example are Arg an Asp

Question 36

side chain of Thr is a ____

Answer 36

secondary alcohol

Question 37

compared to ph of 4, a ph of 8 has a much higher net ____ charge

Answer 37

negative

Question 38

blood is ____

Answer 38

incompressible, such that the rate of flow into an area must equal the rate of flow out of an area

Question 39

velocity of blood flow in ___ porp to the total cross sectional area

Answer 39

inverse

Question 40

why is velocity of blood slower in capillaries than arteries

Answer 40

the total cross sectional area of capillaries exceeds that of arteries

Question 41

properties of ideal gas

Answer 41

have no attractive interactions; at high T and low P gases behave ideally; particles are far they dont exert any attractive forces

Question 42

STP means one mole of gas occupies a volume of 22.4L at

Answer 42

0 degrees

Question 43

what is the molar volume of ideal gas at 25

Answer 43

24.4L

Question 44

production of variety of opsin functions to

Answer 44

enable detection of different colours

Question 45

which enzyme does peptide bond cleavage

Answer 45

protease

Question 46

in glycogen , each glucose subunit is conected to adj subunit by what bond

Answer 46

1-4 glycosidic

Question 47

a phosphatase with _______ which means ____ phospatation, then the intensity on a western blot with ____

Answer 47

remove phosphate, meaning it will less, less

Question 48

Saying that we have sparse bracnhed means we have

Answer 48

decrease in branched enzyme - alpha 1,6

Question 49

which of equations will show least dissociation

Answer 49

one has HIGH negative charge

Question 50

gamma decay occurs when nucleus emits

Answer 50

photon

Question 51

what will happen if homogenous catalyst cannot be separated from products

Answer 51

products will be contaminated

Question 52

homo catalysts are those occupy the ____ phase as rx mixture

Answer 52

same

Question 53

if catalyst is finely ground before added to rx mix then, - adv of homo catalys

Answer 53

rate will be faster because a greater surface area of catalyst will be exposed

Question 54

if a new solid if formed when Al strip placed in zinc container then

Answer 54

al reduction potential is less than zinc

Question 55

common ion effect with ____ solubiity and and end up having more of the shared product, so equilibrium will shift

Answer 55

decrease, left

Question 56

units to express power

Answer 56

J/s, ftxlb/s, W