practical unit 2

Question 1

ocular lens vs objective lens

Answer 1

eye piece you look through (10x)

lenses you turn

Question 2

diaphragm

Answer 2

controls amount of light that reaches the specimen

Question 3

coarse vs fine focus knobs

Answer 3

moves a lot, brings stage up and into view

moves a little, gets sharp focus

Question 4

condenser

Answer 4

lens that focuses light onto specimen

Question 5

magnification

Answer 5

enlargement of specimen

Question 6

resolving power

Answer 6

the ability of a lens to show two adjacent objects as discrete entities

Question 7

depth of field

Answer 7

thickness of the sample that appears in focus at a particular magnification

Question 8

field of view

Answer 8

area of slide you are observing under a microscope

Question 9

working distance

Answer 9

distance between objective and slide

Question 10

7 characteristics of life

Answer 10

1) organization (cells)

2) evolutionary adaptations

3) response to environment

4) reproduction

5) regulation

6) energy processing

7) growth and development

Question 11

what are the 4 things that all cells share?

Answer 11

cell membrane

cytosol

DNA

ribosomes

Question 12

identifying a protist

Answer 12

spirogyrea crassa (algae)

has spiral shaped chloroplasts

Question 13

identifying fungi

Answer 13

rhizopus stolonifer (black bread mold)

circle head with tail

Question 14

viewing kingdom plantae

Answer 14

eloda

has cell wall

Question 15

identifying kingdom animalia

Answer 15

cheek cells

cell membrane with nucleus

Question 16

bacterial morphology

Answer 16

bacillus/bacilli: rod shaped

coccus/cocci: round

spirillum/spirilla: spiral

Question 17

bacterial arrangement

Answer 17

strepto: long chain link structure

staphylo: grape like structure

Question 18

gram stains

Answer 18

positive: purple

negative: red