7.1 and 7.2 Flashcards

(52 cards)

1
Q

scanning electron

A
pencil-like beam of electrons scan over surface of specimen
produces 3D image
does not have to be ultra thin 
cannot see inner layers
1000000x
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2
Q

transmission electron

A
explores cell structure and large protein molecules
2D, flat-like image
farther zoo 
ultra thin specimen
10000000x
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3
Q

holds the objectives and can rotate to change the magnification

A

nose piece

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4
Q

holds slide in place

A

stage clips

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5
Q

moves body tube to focus image

A

course adjustment knob

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6
Q

basic unit of life

A

cell

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7
Q

fundamental concept of biology

A

cell theory

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8
Q

Robert Hooke

Anton van Leeuwenhoek

A

discovered cells

discovered bacteria

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9
Q

lysosomes

p e a

A

plant

animal

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10
Q

provides magnification

A

scanning power objective - red - 4x
low power objective - yellow - 10x
high power objective - blue - 40x

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11
Q

Schleiden and Schwann

A

all plants and animals are made up of cells

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12
Q

central vacuole

A

stores salts
absorbs water to expand cell
supports heavy structures

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14
Q

ER

p e a

A

animal

plant

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15
Q

contractile vacuole

A

pump out excess water in single-celled organisms

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16
Q

vesicles

A

store and move materials between cell organelles

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17
Q

lysosomes

A

sac filled with enzymes
breaks down lipids, proteins, carbohydrates
fuse with food vacuoles to digest food
destroy harmful bacteria

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18
Q

microfilmates

A

pale purple
threadlike structures made of actin
allows cell to move and change shape

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19
Q

golgi

p e a

A

animal

plant

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20
Q

regulates amount of light passing up toward eye piece

A

diaphragm

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22
Q

microtubules

A

yellow
hollow structure made of tubulins
involved in cell division

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23
Q

contains magnifying lens

24
Q

bound ribosomes

A

bound to ER

make membrane proteins

25
Q

rough endoplasmic reticulum

A

attached or bound to ribosomes
proteins exit out to Golgi
found in salivary glands

26
Q

maintains the proper distance between the eye piece and the objectives

27
smooth endoplasmic reticulum
no ribosomes | produce lipids and sex hormones
28
ribosomes | p e a
prokaryotic animal plant
29
produces light or reflects light up toward eye piece
lamp | illuminator
30
golgi apparatus
flattened stack structure receives proteins from ER revises and modifies proteins sends to vesicles
31
chloroplasts
site of photosynthesis
32
cell wall | p e a
prokaryotic | plant
33
mitochondria
power house | makes ATP - adenosine tri phosphate (high energy)
34
cell wall
outside of cell membrane | glues plant shape and protection support
35
flagella
long, thin whip-like structure projects from cell "s" shape motion
36
cilia
shorter, more numerous than flagella microtubules rowing movement
37
process of proteins leaving a cell
ribosomes > rough ER > golgi > vesicle
38
nucleus
control center | contains DNA for reproduction
39
nucleolus
produces ribosomes
40
supports microscope
base
41
nuclear membrane
controls movement into and out of nucleus
42
compound light microscope
``` observe objects and nonliving things allows light to pass through specimen see multiple layers of specimen can only magnify small specimen 1000x ```
43
cell membrane | p e a
prokaryotic animal plant
44
vacuoles | p e a
animal - small and many | plant - large center vacuole
45
mitochondria | p e a
animal | plant
46
moves body tube slightly to adjust image
fine adjustment knob
47
nucleus | p e a
animal | plant
48
chloroplast | p e a
plant
49
Rudolf Virchow
new cells can be produced only from division of existing cells
50
cytoskeleton | p e a
animal | plant
51
supports body tube
arm
52
cytoskeleton
network of protein filments - microfilm aged and microtubules give cells shape and internal organization transport materials between cell
52
free ribosomes
suspend in cytoplasm | make proteins that remain in cytoplasm
52
cell membrane
``` plasma membrane thin outer boundary of cell inside cell wall of plants regulates chemicals in and out of cell semi-permeable ```