Cell parts (try 2) Flashcards

1
Q

Not all cells within an _____ are like.

A

organism

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2
Q

Even cells within the same organism show great _____ in size, shape and internal organization (ie. Never, skin, cheek, rbc’s, muscle)

A

diversity

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3
Q

Cell

A

the smallest unit of life that can carry on all the functions of life.

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4
Q

the smallest unit of life that can carry on all the functions of life.

A

cell

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5
Q

Unicellular organism

A

A complete living thing costing of only one cell.

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6
Q

A complete living thing costing of only one cell.

A

Unicellular organism

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7
Q

Multicellular organism

A

A living thing consisting of more than one cell.

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8
Q

A living thing consisting of more than one cell.

A

Multicellular organism

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9
Q

Prokaryote

A

cell that does not have a nucleus or membrane bound organelles.

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10
Q

cell that does not have a nucleus or membrane bound organelles.

A

prokaryote

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11
Q

Eukaryote

A

cell that has a nucleus and membrane bound organelles

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12
Q

cell that has a nucleus and membrane bound organelles

A

Eukaryote

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13
Q

Robert Hooke

A

English scientist in 1665 observed a thin slice of cork (dead plant material) with a microscope. “little boxes” reminded him of small rooms = cells. First to use the word “cell”.

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14
Q

English scientist in 1665 observed a thin slice of cork (dead plant material) with a microscope. “little boxes” reminded him of small rooms = cells. First to use the word “cell”.

A

Robert Hooke

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15
Q

Anton van Leeuwenhoek

A

Dutch microscope maker. In 1675 was the first
person to observe living cells.

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16
Q

Dutch microscope maker. In 1675 was the first person to observer living cells.

A

Anton van Leeuwenhoek

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17
Q

Schleiden

A

1838 this German botanist concluded that all plants were composed of cells

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18
Q

1838 this German botanist concluded that all plants were composed of cells

A

Schleiden

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19
Q

Schwann

A

1839 this German zoologist concluded that all animals were composed of cells.

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20
Q

1839 this German zoologist concluded that all animals were composed of cells.

A

Schwann

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21
Q

virchow

A

1855 this German physician determined that cells came from other cells

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22
Q

1855 this German physician determined that cells came from other cells

A

virchow

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23
Q

Cell theory #1

A

All living things are composed of one or more cells.

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24
Q

Cell Theory #2

A

Cells are the basic units of structure and function in an organism.

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25
Cell theory #3
Cells come only from the reproduction of existing cells.
26
All ______ are composed of one or more cells
living things
27
____ are the basic units of structure and function in an organism.
Cells
28
Cells come only from the _____ of existing cells
reproduction
29
The electron microscope has revealed many specialized structures (______) inside the cell. Each “little organ” performs one or more special tasks to keep the cell alive.
organelles
30
organelles
The electron microscope has revealed many specialized structures (______) inside the cell. Each “little organ” performs one or more special tasks to keep the cell alive.
31
Cytoplasm
region of the cell between the cell membrane and the nucleus.
32
Cytosol
The aqueous gelatin like fluid that bathes the organelles on the inside of the cell membrane.
33
region of the cell between the cell membrane and the nucleus.
Cytoplasm
34
The aqueous gelatin like fluid that bathes the organelles on the inside of the cell membrane.
Cytosol
35
Mitochondria
powerhouse” of the cell. Contains its own DNA. Site of aerobic respiration.
36
powerhouse” of the cell. Contains its own DNA. Site of aerobic respiration.
Mitochondria
37
Ribosomes
Most numerous of the organelles. Not surrounded by a membrane. Organize the synthesis of proteins.
38
Most numerous of the organelles. Not surrounded by a membrane. Organize the synthesis of proteins.
Ribosomes
39
free ribosomes
make proteins for inside cell.
40
make proteins for inside cell.
free ribosomes
41
attached ribosomes
make proteins for outside.
42
make proteins for outside.
attached ribosomes
43
ER - rough
prepares proteins for export.
44
prepares proteins for export.
ER rough
45
ER smooth
synthesizes, regulates and breaks down chemicals.
46
synthesizes, regulates and breaks down chemicals.
ER smooth
47
• Golgi Apparatus
System of membranes that process, package and secrete substances produced by the cell. Works closely with ER to modify proteins for export.
48
System of membranes that process, package and secrete substances produced by the cell. Works closely with ER to modify proteins for export.
Golgi apparatus
49
Lysosomes
Common “little stomachs” in animals. Digests molecules, old organelles and foreign substances like bacteria and viruses.
50
Common “little stomachs” in animals. Digests molecules, old organelles and foreign substances like bacteria and viruses.
Lysosomes
51
Cytoskeleton
Skeleton of the cell which gives the cell its shape. Made of non membrane bound organelles, microfilaments and microtubules.
52
Skeleton of the cell which gives the cell its shape. Made of non membrane bound organelles, microfilaments and microtubules.
Cytoskeleton
53
Cilia
Short, hair-like extensions of cells that function in movement. Commonly found in large numbers.
54
Short, hair-like extensions of cells that function in movement. Commonly found in large numbers.
Cilia
55
Flagella
Long, tail-like extensions of cells that occur singly, or in pairs; also for movement.
56
Long, tail-like extensions of cells that occur singly, or in pairs; also for movement.
Flagella
57
Nuclear membrane (nuclear envelope)
Double membrane that surrounds the nucleus and controls what enters and leaves the nucleus.
58
Double membrane that surrounds the nucleus and controls what enters and leaves the nucleus.
Nuclear membrane (nuclear envelope)
59
Chromatin
Thin, invisible, non-active strands of hereditary info. (DNA + protein).
60
Thin, invisible, non-active strands of hereditary info. (DNA + protein).
Chromatin
61
Chromosomes
Thick, coiled, densely packed, visible, active strands of hereditary info. (DNA + proteins).
62
Thick, coiled, densely packed, visible, active strands of hereditary info. (DNA + proteins).
Chromosomes
63
Nucleolus
Can be one or more present. Site where ribosomes are synthesized.
64
Can be one or more present. Site where ribosomes are synthesized.
Nucleolus
65
Nucleus
Directs all cell activity; carries the hereditary information (DNA).
66
Directs all cell activity; carries the hereditary information (DNA).
Nucleus
67
Cell wall:
The outer wall secreted around the cell membrane of plant cells; it is nonliving, made of cellulose, and used for support and protection.
68
The outer wall secreted around the cell membrane of plant cells; it is nonliving, made of cellulose, and used for support and protection.
Cell Wall
69
• Cell membrane:
A semi- Permeable lipid and protein boundary that controls what passes in and out of the cell. “chain link fence” of the cell
70
A semi- Permeable lipid and protein boundary that controls what passes in and out of the cell. “chain link fence” of the cell
Cell membrane
71
Found in animal cells and function in cell division (mitosis).
Centrioles
72
Centrioles
Found in animal cells and function in cell division (mitosis).
73
Microtubules
Help shape and support the cell; also make up cilia and flagella.
74
Help shape and support the cell; also make up cilia and flagella.
Microtubules
75
Microfilaments
Help shape and support cell; play a role in cytoplasmic streaming.
76
Help shape and support cell; play a role in cytoplasmic streaming.
Microfilaments
77
Vacuole
Supports cell wall in plants (turgor pressure); stores food, waste, enzymes and poison.
78
Supports cell wall in plants (turgor pressure); stores food, waste, enzymes and poison.
Vacuole
79
Plastids
Found in plants and contain their own DNA. Store pigments that absorb light or store food (starch, fats).
80
Found in plants and contain their own DNA. Store pigments that absorb light or store food (starch, fats).
Plasatids
81
Chloroplasts
Plastids that contains green pigment (chlorophyll) which traps and converts sunlight into food (sugar).
82
Plastids that contains green pigment (chlorophyll) which traps and converts sunlight into food (sugar).
Chloroplasts
83
Chromoplasts
Plastids that make and store accessory pigments (orange, yellow and red) which aide in photosynthesis.
84
Plastids that make and store accessory pigments (orange, yellow and red) which aide in photosynthesis.
Chromoplasts
85
Leucoplasts
Plastids that store food such as starch, protein and fat.
86
Plastids that store food such as starch, protein and fat.
Leucoplasts
87
Prokaryotic
No nucleus or nuclear membrane ie. bacteria
88
No nucleus or nuclear membrane ie. bacteria
Prokaryotic
89
Eukaryotic
Nucleus and nuclear membrane ie. animal and plant cell
90
Nucleus and nuclear membrane ie. animal and plant cell
Eukaryotic
91
Plant
Autotrophic (make their own food) • Cell wall • Large vacuole • Plastids • Few lysosomes if any • No centrioles
92
Animal
Heterotrophic (must eat food) • No cell wall • Small vacuole if any • No plastids • Many lysosomes • Centrioles
93
Autotrophic
plant
94
cell wall
plant
95
large vacuole
plant
96
plastids
plant
97
few if any lysosomes
plant
98
no centrioles
plant
99
heterotrophic
animal
100
no cell wall
animal
101
small vacuole if any
animal
102
no plastids
animal
103
many lysosomes
animal
104
centrioles
animal
105
autotrophic
make their own food
106
heterotrophic
must eat food