Download Science 103: Lecture 4

Science 103: Lecture 4
Reading:
The Nature of Living Things
P 403-406 , 421 & 477
Cell Theory
1. What is a Cell?
2. Discovery of Cells – Robert Hooke (1665)
(a)
(b)
3. Anton van Leeuwenhoek (1674)
4. The Cell Theory – Schleiden and Schwann (1839)
5. Basic (Eukaryotic) Cell Structure
(a) Nucleus –
(b) Cytoplasm –
(c) Organelles –
6. Characteristics of Major Cell Types
There are 2 structurally different types of cells, prokaryotes and eukaryotes.
FIGURE 19.3
(a) Differences between Prokaryotes and Eukaryotes
Prokaryotes
True Nucleus?
Membrane Bound Organelles?
Kingdoms?
(b) Similarities between Prokaryotes and Eukaryotes
(i)
Eukaryotes
(ii)
(iii)
(iv)
(v)
7. Classification of Organisms
(a) 3 Domains:
(i)
(ii)
(iii)
FIGURE 19.18
8. Viruses?
FIGURES 21.22 & 21.23
(b) 6 Kingdoms:
(i)
(ii)
(iii)