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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

Whiplike tail of sperm

Flagella