Flashcards in Cell Biology Deck (31)
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1
DNA storage and copied here
Nucleus
2
Compartmentalize functions
Organelles
3
ICF and organelles
Cytoplasm
4
ICF only
Cytosol
5
Selective Barrier "gatekeeper of the cell"
Plasma membrane
6
Movement of materials between cells (not membrane)
Filtration
7
Movement of particles from high concentration to low concentration
Diffusion
8
Water pressure when pressure inside is greater than pressure outside. Water flows out = "pushing pressure"
Example: capillaries in kidneys
Hydrostatic pressure
9
-net flow of water across a membrane
-high to low
-low solute to high
-water moves to dilute solute
Osmosis
10
Total solute concentration (how much stuff) is dissolved in water
Osmolarity
11
Proportional to solute concentration = pulling pressure
Osmotic pressure
12
Pressure needed to stop osmosis
Osmotic pressure
13
-needs carrier
-requires energy (ATP) because movement is against "up" concentration gradient
Active transport
14
Requires ATP and membrane proteins to make vesicles
Endo/exo
15
control center
Nucleus
16
Production and processing
ER
17
Make ribosomes
DNA -> rRNA -> ribosomes
Nucleolus
18
Has ribosomes that synthesize proteins; produces plasma membrane
Rough ER
19
-no ribosomes
-synthesize steroids (ovaries and testies)
-Stores Ca2+ (in muscles)
-Detoxifies alcohol/drugs (in liver)
Smooth ER
20
-protein factories
-made of rRNA and protein
-translate mRNA into protein
-exist free in cytoplasm and on rough ER
Ribosomes
21
-sorting and packaging
-receives protein from ER
-sorts, add CH2O
-package into vesicles
Golgi Complex
22
-recycling centers
-contain enzymes that digest old/foreign materials
-"cell suicide" (apoptosis)
Lysosomes
23
-powerhouse of the cell
-synthesis ATP
-has own DNA and RNA
Mitochondria
24
-cell division
-made up of microtubules arranged in set pattern
Centrioles
25
Infrastructure and transport
Cytoskeleton
26
In the cytoskeleton....
-structural support
Intermediate filaments
27
In the cytoskeleton...
-intercellular transport
-hold organelles in place
Microtubule
28
In the cytoskeleton...
-cell movement
Microfilament
29
External movement
Cilia/Flagella
30
Hairlike
-ear/eye, respiration and reproduction tracks
Cilia
31
