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Pre-Ap Biology > Microscopy > Flashcards

Microscopy Flashcards

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1
Q

Microscope Magnification

A

the number of time s the image of the specimen is made larger.

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2
Q

field of view

A

maximum area you can see through the ocular lens

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3
Q

specimen size

A

the actual size of the specimen being viewed

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4
Q

drawing magnification

A

the number of times larger a drawing is drawn compared to specimen size

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5
Q

resolution

A

point at which two objects can be distinguished separate

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6
Q

compound microscope

A

light rays are passed through
internal structures
cells and organisms can be observed while still living

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7
Q

dissecting microscope

A

light rays are bounced off a specimen
external structures
can be observed still living

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8
Q

transmission electron microscope (TEM)

A

beams of electrons are passed through thin sections of a specimen
internal structures of very small organisms may be viewed
images are projected onto computer or television screen
max magnification: ~1000000
Limit of resolution : 0.0000007

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9
Q

Scanning Electron Microscope (SEM)

A

Beams of electrons are bounced of specimens surface
external structures of very small organisms may be viewed
images are projected onto computer or television screen
max magnification: ~1000000
Limit of resolution : 0.0000007

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10
Q

Base

A

Bottom of microscope

Supports the microscope

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11
Q

arm

A

supports the body tube, objective lens and ocular lens as well

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12
Q

body tube

A

Connects the ocular lens to the objective lenses

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13
Q

coarse adjustment focusing knob

A

moves the stage closer and further from the lenses. general focus

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14
Q

fine adjustment focusing knob

A

an adjustment that is used for higher level lens to fine focus the image. Detail focus

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15
Q

low power objective lens

A

magnifies image 4X

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16
Q

medium power objective lens

A

magnifies image 10X

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17
Q

high power objective lens

A

magnifies image 40X

18
Q

oil immersion objective lens

A

magnifies image 100X

19
Q

ocular lens

A

lens at the top that you look through magnifies 10X

20
Q

stage

A

the platform where the slides are placed

21
Q

stage clips

A

holds the slides in place

22
Q

revolving Nosepiece

A

holds objective lenses in place and revolves them

23
Q

diaphragm

A

used to vary the intensity and the size of the cone of light that is projected upward into the slide

24
Q

lamp

A

light source

25
Q

condenser

A

focuses the light onto the specimen

26
Q

Atom

A

smallest part of an element

Iron, magnesium

27
Q

molecule

A

two or more atoms chemically combined

E.g. CO2, H2O

28
Q

organic compounds

A

contain both carbon and hydrogen atoms

E.g. (DNA)

29
Q

inorganic compound

A

lacks carbon and/or hydrogen atoms (CO2,H2O)

30
Q

organelle

A

small structure within cells

E.g. chloroplast, mitochondria, Golgi apparatus

31
Q

cell

A

basic unit of structure and functioning all living things

E.g. Fat cells cancer cells, skin cells

32
Q

tissue

A

a group of specialized cells that perform a shared function

E.g. muscle tissue, blood, xylem

33
Q

organ

A

a group of specialized tissues that work to perform a shared function

34
Q

organ system

A

a group of interdependent organs, each with a specific function, that work together to carry out a major body function.
E.g. nervous reproductive, respiratory

35
Q

multicellular organisms

A

an independently functioning living thing, compromised of multiple organ systems

36
Q

population

A

a group of interacting and interbreeding organisms of one species.

37
Q

community

A

a group of interacting populations in a specific regions

E.g. Mission creek park includes all the populations of bears, Kokanee salmon, trees, insects, etc

38
Q

Ecosystem

A

the combination of all living and non living parts of the enviornment.

39
Q

biome

A

major geographic areas in which the climate determines which life forms are present

40
Q

biosphere

A

the entire world of living organisms

Pre-Ap Biology (4 decks)

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