12. Figure 7.5
Fibers of extra-
cellular matrix (ECM)
Glyco- Carbohydrate
protein
Glycolipid
EXTRACELLULAR
SIDE OF
MEMBRANE
Cholesterol
Microfilaments Peripheral
of cytoskeleton proteins
Integral
protein
CYTOPLASMIC SIDE
OF MEMBRANE
13. Figure 7.6
Lateral movement occurs Flip-flopping across the membrane
∼107 times per second. is rare (∼ once per month).
14. Figure 7.7
RESULTS
Membrane proteins
Mixed proteins
Mouse cell after 1 hour
Human cell
Hybrid cell
23. Figure 7.10
Signaling molecule
Receptor
Enzymes
ATP
Signal transduction
(a) Transport (b) Enzymatic activity (c) Signal transduction
Glyco-
protein
(d) Cell-cell recognition (e) Intercellular joining (f) Attachment to
the cytoskeleton
and extracellular
matrix (ECM)
24. Figure 7.10a
Signaling molecule
Receptor
Enzymes
ATP
Signal transduction
(a) Transport (b) Enzymatic activity (c) Signal transduction
25. Figure 7.10b
Glyco-
protein
(d) Cell-cell recognition Intercellular joining
(e) (f) Attachment to
the cytoskeleton
and extracellular
matrix (ECM)
27. Figure 7.11
HIV
Receptor Receptor (CD4)
(CD4) but no CCR5
Co-receptor Plasma
(CCR5) membrane
HIV can infect a cell that HIV cannot infect a cell lacking
has CCR5 on its surface, CCR5 on its surface, as in
as in most people. resistant individuals.
29. Figure 7.12
Transmembrane Secretory
glycoproteins protein
Golgi
apparatus
Vesicle
ER
ER lumen
Glycolipid
Plasma membrane:
Cytoplasmic face Transmembrane
Extracellular face glycoprotein Secreted
protein
Membrane
glycolipid
37. Figure 7.13
Molecules of dye
Membrane (cross section)
WATER
Net diffusion Net diffusion Equilibrium
(a) Diffusion of one solute
Net diffusion Net diffusion Equilibrium
Net diffusion Net diffusion Equilibrium
(b) Diffusion of two solutes
38. Figure 7.13a
Molecules of dye
Membrane (cross section)
WATER
Net diffusion Net diffusion Equilibrium
(a) Diffusion of one solute
39. Figure 7.13b
Net diffusion Net diffusion Equilibrium
Net diffusion Net diffusion Equilibrium
(b) Diffusion of two solutes
42. Figure 7.14
Lower Higher Same concentration
concentration concentration of solute
of solute (sugar) of solute
Sugar
molecule
H2 O
Selectively
permeable
membrane
Osmosis