physio lab quiz 1 (HP1-HP4)

1. Is attendance required?

2. are here makeups for missed labs/quizzes

1. yes

2. no

1. 3 parts of your lab grade?

2. how many quizzes/how many graded?

1a. lab attendance = 5 points

b. post-lab questions = 5 points

c. quizzes = 15 points

2a. you take 6 quizzes, lowest grade is dropped

1. scientific notation layout

2. coefficient rules

2. positive exponent v neg exponent

1. (coefficiant) x (base^exponent)

2. 1

3a . + exp = greater than 1

b. - exp - less than 1

prefix -> 10^___:

pico

nano

micro

milli

centi

deci

base unit

deka

hecto

kilo

mega

giga

tera

-12

-9

-6

-3

-2

-1

000

1

2

3

6

9

12

convert 987mm into km

987mm x 1m/1000mm x 1km/1000m = 9.87x10^-4km

molarity v. osmolarity:

1. units

2. what it measures

3. what mCs dissociate?

1. molarity = mol/L (M)

a. amount of solute molecules regardless of dissociation

2. osmolarity = Osmol/L

a. amount of solute particles, accounting for dissociation

3. they'll tell you if mCs dissociate. complex organic molecules like glucose or amino acids don't disassociate

total magnification equation

ocular lens magnification x objective lens magnification

magnification/total magnification of each lens

1. ocular = 10X

2. scanning = 4X, total = 40X

3. low power = 10X, total = 100X

4. high power = 40X, total = 400X

5. oil immersion = 100X, total = 1000X

which lens requires more/less light

amount of light increases w/ magnification

ex. scanning = least light, oil immersion = most light

how are images in microscopes distorted?

upside down and backwards

diffusion and osmosis are both ____ processes

passive

diffusion v. osmolarity definitions

1. diffusion - movement of solute particles from high to low solute concentration

2. osmosis = movement of solvent particles from low to high solute concentration

osmolarity only occurs through a ___

selectively permeable membrane that allows water and stops particles

flux:

1. definition

2. how do these affect flux/diffusion rate?

a. temp,

b. conc. gradient,

c. particle size/mass

1. rate of substance (fluid or particles) across a membrane

2a. higher temp = higher D = higher flux

b. higher conc. gradient = higher D = higher flux

c. larger particle size/mass = higher D = lower flux

hypo, iso, hypertonic solutions ? where does water go and what happens to a cell?

1. hypo = ECF has less solute than cell = water into cell

a. cell grows/lyses

2. iso = ECF and cell have same solute concentration = equilibrium

a. no change

3. hyper = ECF has more solute than cell = water leaves cell a. cell shrinks