slide 1 lipid bilayer fluid one layer of lipids one layer of lipids stepped art figure 4.3 page 56
TRANSCRIPT
Slide 1
lipid bilayer
fluid
fluid
one layerof lipids
one layerof lipids
Stepped Art
Figure 4.3Page 56
Slide 2
Protein pump across
bilayer
Protein channel
across bilayer
Protein pump
Recognition protein
Receptor protein
extracellular environment
cytoplasm
lipid bilayer
Figure 4.4Page 57
Slide 3
0.5 1.0 1.5
0.79
0.06
3.14 7.07
0.52 1.77
Diameter (cm):
Surface area (cm2):
Volume (cm3):
Surface- to-volume ratio:
13.17:1 6.04:1 3.99:1
Figure 4.5Page 57
Slide 4
ocular lens
objective lens
stage
condenser
illuminator
prism
source of illumination
Figure 4.6bPage 58
Slide 5
viewing screen
projector lens
intermediate lens
objective lens
specimencondenser lens
accelerated electron flow (top to bottom)
Figure 4.7Page 58
Slide 6
frog egg3 mm
typical plant cell10-100 µm
mitochondrion1-5 µm
chloroplast2-10 µm
human redblood cell7-8 µmdiameter
Trypanosoma(protozoan)25 µm long
Chlamydomonas(green alga)5-6 µm long
polio virus30 nm
HIV(AIDS virus)100 nm
T4 bacteriophage225 nm long
tobacco mosaic virus300 nm long
DNA molecule2 nm diameter
Unaided Vision
Electron Microscope (Down To 0.5 Nm)
Light Microscope (Down To 200 Nm)
Escherichia coli (bacterium)1-5 µm long
1 centimeter (cm) = 1/100 meter, or 0.4 inch
1 millimeter (mm) = 1/1,000 meter
1 micrometer (µm) = 1/1,000,000 meter
1 nanometer (nm) = 1/1,000,000,000 meter
1 meter = 102 cm = 103 mm = 106 µm = 109 nm
1 mm 100 µm 10 µm 1 µm 100 nm 10 nm 1 nm 0.5 nm
Figure 4.8Page 59
Slide 7
microtubules(components of cytoplasm)
Golgi body
vesicle
microfilaments(components of cytoskeleton)
mitochondrion
chloroplast
central vacuole
rough ER)
ribosomes (attached to rough ER)
ribosomes in cytoplasm
smooth ER
DNA + nucleoplasm
nucleolusnuclear envelope
NUCLEUS
plasma membrane
cell wall
Figure 4.10aPage 61
Slide 8
microfilaments
microtubules
components ofcytoskeleton
plasma membrane
mitochondrion
nuclear envelope
nucleolus
DNA + nucleoplasm
NUCLEUS
vesicle
lysosome
rough ER
ribosomes
smooth ER
vesicle
Golgi body
pair ofcentrioles
Figure 4.10bPage 61
Slide 9
cytoplasm
nucleus
plasma membrane
nuclear envelope
nucleoplasm
nucleolus
chromatinFigure 4.11a,b
Page 62
Slide 10
Nuclear pore bilayer facing cytoplasm Nuclear envelope
bilayer facing nucleoplasm
Figure 4.12bPage 63
Slide 11
one unduplicated chromosome
one duplicated chromosome
one duplicated, condensed chromosome
In-text figure Page 63
Stepped Art
Slide 12
5 Vesicles from the Golgi body transport products to the plasmamembrane. Products arereleased by exocytosis.
4 Proteins and lipids take onfinal form inside Golgi body. Modifications enable them to be sorted out and shipped to proper destinations.
3 Vesicles bud from the ERmembrane and transportunfinished proteins and lipids to a Golgi body.
2 In the membrane of smoothER, lipids are assembled.
1 Some polypeptide chainsenter the rough ER. Modifications begin.
Endocytic vesicles format plasma membrane andmove into the cytoplasm. They might fuse withthe membrane of otherorganelles or remain intact, asstorage vesicles.
Exocytic vesicles budfrom ER and Golgimembranes, travel to and fuse with plasma membrane.Their contents are therebyreleased from the cell.
DNA instructions forbuilding polypeptidechains leave the nucleusand enter the cytoplasm.
assorted vesicles
Golgibody
smooth ER
rough ER
Chains are assembled on ribosomes in cytoplasm. Figure 4.13
Page 64
Slide 13
Rough ER
Smooth ER
Figure 4.14Page 65
Slide 14
internal spacebudding vesicle
Golgi body
Figure 4.15Page 65
Slide 15
outercompartment
innercompartment
outer membrane inner membrane
repeated foldings of inner membrane (cristae)
Figure 4.16Page 66
Slide 16
inner membranesystem (thylakoidmembrane)
granum stroma
two outermostmembrane layers
Figure 4.17Page 66
Slide 17
Endoplasmic Reticulum (ER)Nucleus
Mitochondrion Plasma
Membrane
nuclear envelope
nucleolus
Cell Wall Chloroplast
Central Vacuole
Figure 4.18Page 68
Slide 18
Plasma Membrane Golgi Body Lysosome
Endoplasmic Reticulum (ER)
nuclear envelope
nucleolus
Nucleus Mitochondrion
Figure 4.19Page 69
Slide 19
tubulinsubunit
actinsubunit
onepolypeptidechain
microtubule microfilament
intermediate filament
Figure 4.21Page 71
Slide 20
Kinesin Dynein
end that binds cell component
item to be movedbinds here
ATP binding head
ATP binding head
microtubuleminus end plus end
Figure 4.23Page 72
Slide 21
Ribbon model for kinesin
Figure 4.24aPage 72
Slide 22
Figure 4.24bPage 72
Slide 23
one of the outer ring’s pairs of microtubules(doublets)
dynein arm
two centralmicrotubules
central sheath
base of flagellum or cilium
plasma membrane
basal body
plasma membrane
Figure 4.25Page73
Slide 24
plasmamembrane
middle lamella
primarycell wall
plasmodesmata
Figure 4.27bPage 74
Slide 25
three-layersecondary wall
primarycell wall
space once occupied by cytoplasm of living cell
fibers from flax stem Figure 4.27d,ePage74
Slide 26
tight junctions
adhering junction
gap junction
Figure 4.29Page 75
Slide 27
bacterial flagellum
pilus
capsule
cell wall
plasma membrane
cytoplasm
DNA
ribosomes in cytoplasm
Figure 4.30Page 76