Bio Lab Mid Term

Front 1

Total Magnification

Back 1

(Objective lens power) x (ocular lens power)

Front 2

Specimen (actual) length and width

Back 2

Calibrated value of one ocular division x # of ocular divisions taken up by the specimen‟s length(or width)

Front 3

Calibrated values

Back 3

Low Power = 26μm, Medium Power = 10μm, High Power= 2.6μm

Front 4

To get scale you

Back 4

Take specimen length/ drawing length (pick 10cm, most likely)

Front 5

Drawing width

Back 5

take specimen width/ scale.

Front 6

Resolving power

Back 6

the ability to separate small details (ie. Points really close together)

Front 7

Wet Mount slides

Back 7

Temporary slides you make yourself

Front 8

STAIN

Back 8

is used to increase contrast

Front 9

IRRIGATION

Back 9

is used to change or add more fluid to temporary slides

Front 10

Diffusion

Back 10

Movement of PARTICLES from a region of HIGHER concentration, to a region of LOWER concentration

Front 11

Osmosis

Back 11

Movement of WATER (or solvent) across a membrane from a region of lower total concentration of solutes to a region of higher concentration of solutes

Front 12

Hypotonic

Back 12

more concentrated side (less water)

Front 13

Hypertonic

Back 13

the less concentrated side (the watery side)

Front 14

Isotonic

Back 14

Equal amount of solvent on each side

Front 15

STARCH

Back 15

large molecules that don‟t move or influence water concentration

Front 16

Dialysis tubing

Back 16

differentially permeable membrane used in lab (app. 50 atoms in diameter)

Front 17

Problem

Back 17

write as it is

Front 18

Hypothesis

Back 18

present tense, no explanation, just answer the question

Front 19

Prediction

Back 19

future tense, no explanation, make a prediction based on your hypothesis as to what will happen

Front 20

Procedure

Back 20

just refer to where it is found

Front 21

Tables

Back 21

make sure they are titled, ruled, boxed in, correct headings, etc.

Front 22

Graphs

Back 22

make sure its on graph paper, in pencil, titled, each axes is titles with units, if a key is required make sure you use it

Front 23

Stereomiscroscope

Back 23

provides a 3-d view of the specimen

Front 24

Diameter of field of view decreases

Back 24

magnification increases

Front 25

One ocular division

Back 25

Stage micrometer distance (mm)/# of divisions x 1000um/mm

Front 26

Benedict's Reagent

Back 26

turns red/green/yellow/orange/brown when sugars are present

Front 27

Iodine

Back 27

turns dark in colour (brown/black/blue/purple) when starch is present

Front 28

Sudan IV

Back 28

turns dark pink when lipids are present (uses filtrate paper)

Front 29

Biuret Reagent

Back 29

turns purple when proteins are present

Front 30

Surface Area to Volume ratio

Back 30

as cell increases in size this decreases

Front 31

Percent Weight Change

Back 31

(Final weight-Initial Weight)/Initial weight x 100

Front 32

Silver Nitrate

Back 32

text for chlorine ions, a white precipitate is positive

Front 33

Sea Urchin Fluid

Back 33

Coelomic Fluid found in the coelom(body)

Front 34

Onion Cells

Back 34

Epidermal Cells

Front 35

Longitudinal section

Back 35

any cut parallel to a line running centrally down the length of the specimen

Front 36

Cross sections

Back 36

any cut perpendicular to a longitudinal section