Download Topic 6: Cells, Membranes, and Structure

SFR 100 – Topic #6: Cells page 1
Topic # 6
Cells, Membranes, and Structure.
(Campbell and Reece 98-101, 125-141)
I.
II.
Objectives
A.
Understand the structure of cell membranes
B.
Understand how the structure influences the functioning of cell membranes.
C.
Apply previous knowledge on biological molecules.
Flow of materials.
A.
Diffusion.
B.
Osmosis and Selectively permeable membrane.
1.
Selectively or Semi-permeable membrane
2.
Osmotic pressure.
3.
Osmotic concentration.
SFR 100 – Topic #6: Cells page 2
III.
Cell membrane.
A. Lipid bilayer.
B.
Proteins.
C.
Selective transport.
1.
Diffusion.
2.
Transport proteins.
3.
Transport of large molecules.
SFR 100 – Topic #6: Cells page 3
IV.
Cell theory.
V.
Cell components
VI.
VII.
A.
Membranes:
B.
Cytoplasm:
C.
Nucleic acids:
D.
Ribosomes:
E.
Prokaryotic:
F.
Eukaryotic
Why are cells small?
Nucleus.
A. Chromosomes.
1.
B.
Nuclear envelope.
SFR 100 – Topic #6: Cells page 4
VIII.
Cytoplasm and organelles.
A.
Ribosomes.
B.
Endoplasmic reticulum.
C.
Vacuoles.
D.
Mitochondria.
E.
Plastids.
F.
Cytoskeleton.
G.
Endosymbiotic hypothesis. (p. 549-551)
IX.
No typical cell except in lecture.
X.
Key terms.
plasma membrane
cell theory
diffusion
osmosis
selectively permeable
osmotic concentration
osmotic pressure
transport proteins
facilitated diffusion
membrane pump
active transport
vesicle
cytoplasm
organelle
nucleus
procaryotic
eucaryotic
chromosome
nuclear envelope
endoplasmic reticulum
ribosome
vacuole
mitochondria
plastid
chloroplast
endosymbiotic hypothesis