Study Guide For Lab Test 1

Front 1

Parfocal

Back 1

term that describes the ability to change from low power to high power w/out having to adjust the knobs

Front 2

Field of View

Back 2

the circle of light that you see as you look through the ocular

Front 3

Compound Microscope

Back 3

a scope with two systems of lenses

Front 4

Ocular

Back 4

lens at top of body tube—magnifies 10X

Front 5

Objective lenses

Back 5

shortest is scanning objective, middle-sized one is low power objective, longest is high power objective

Front 6

Condenser

Back 6

contains a lens that concentrates light on the specimen being studied

Front 7

Fine adjustment knob

Back 7

small wheel used to move body tube slowly for final focus

Front 8

Coarse adjustment knob

Back 8

large wheel which moves body tube up and down to bring specimen into view (use only with scanning and low power objective

Front 9

Nosepiece

Back 9

rotating device to which objective lenses are attached

Front 10

Stage

Back 10

platform on which microscopes slide is placed and held by stage clips

Front 11

Diaphragm

Back 11

structure beneath condenser that can be opened and closed by means of a small lever to control the amount of light illuminating the specimen

Front 12

Scanning objective

Back 12

magnifies image 4X times 10X ocular magnification= 40X total magnification

Front 13

Low power objective

Back 13

magnifies image 10X times 10X ocular magnification= 100X total magnification

Front 14

High power objective

Back 14

magnifies image 40X times 10X ocular magnification= 400X total magnification

Front 15

Parcentric

Back 15

whatever is in the center will stay in the center when magnification is changed

Front 16

Cheek epithelial cells

Back 16

contain a nucleus, cell membrane, and cytoplasm

Front 17

Amoeba

Back 17

contains a plasmalemma (cell membrane), cytoplasm- two different kinds: endoplasm and ectoplasm-, and pseudopodium (organelles of locomotion and food-catching- arms)

Front 18

Elodea cells

Back 18

contain a cell wall, cell membrane, central vacuole, cytoplasm, and chloroplasts

Front 19

Onion epidermal cell

Back 19

contains a nucleus, cell wall, cytoplasm, cell membrane, central vacuole, and nucleoi

Front 20

Osmosis

Back 20

diffusion of water from the membrane

Front 21

Plasmolysis

Back 21

shrinking of the cytoplasm due to osmosis

Front 22

Hypertonic solution

Back 22

more than/higher concentration of solute than inside the cells

Front 23

Crenation

Back 23

animal cells shrink due to hypertonic solution

Front 24

Hypotonic solution

Back 24

less than/lower percentage of solute than inside the cell

Front 25

Turgor pressure

Back 25

plasma membrane pushes against the rigid cell

Front 26

In lab 3 what is the dialysis tubing bag w/40% syrup solution inside supposed to represent

Back 26

40% syrup solution represent the cytoplasm
dialysis tubing represent the cell membrane

Front 27

Disaccharide

Back 27

dual enzyme that consist of amylase and maltase

Front 28

Benedict's reactant

Back 28

used to indicate the presence of sugars- must boil to see results

Front 29

Diastase enzyme

Back 29

breaks down starch into sugar

Front 30

What do indicator substances do?

Back 30

indicate levels of starch or sugar

Front 31

When starch molecules are digested (broken down) what molecules are produced as a result

Back 31

simple sugars

Front 32

What, specifically does iodine do?

Back 32

indicates the presence of starch and shows how much

Front 33

Photosynthesis reaction

Back 33

solar energy + 6 CO2 + 6 H20= C6H12O6 + 6 O2

Front 34

Photosynthesis

Back 34

starch is an end product of photosynthesis produced during the light-independent reactions- plants must have direct sunlight in order to perform photosynthesis

Front 35

Isolation of pigments by chromatography

Back 35

primary photosynthetic pigments- chlorophyll a and chlorophyll b

Front 36

Major functions of chlorophyll a and chlorophyll b

Back 36

to absorb sunlight

Front 37

Enzyme lab

Back 37

iodine test indicates either blue/black for starch or amber for glucose

Front 38

Photosynthesis test

Back 38

iodine either indicates blue/black for starch or amber for no starch

Front 39

Relationship between photosynthesis and light

Back 39

direct sunlight is needed in order for photosynthesis to take place

Front 40

Who discovered microbiology in the late 1660's?

Back 40

Anton von Leeuwenhoek

Front 41

How coined the term "cell"

Back 41

Robert Hooke (British)

Front 42

Magnification

Back 42

if magnification increases, the field of view decreases