1. Warm Up #1

2. Answer is B (cytoskeleton is made of microfilaments)
Warm Up #1
Answer is B (cytoskeleton is made of microfilaments)

3. Warm Up #2

4. Warm Up #2 Answer: C Pro- Before Karyotes- nucleus
Endosymbiotic theory

5. Warm Up #3

6. Warm Up #3 Answer: B All cells do not have a nucleus
(prokaryotic cells like bacteria don’t have a nucleus, they have DNA but NO Nucleus)

7. Complete the Cells KIM Chart COMPARISON: CELL ORGANELLES
What are we doing today
Complete the Cells KIM Chart
COMPARISON: CELL ORGANELLES
Genetics Art project

8. Cell Theory SB1a. a. Explain the role of cell organelles for both prokaryotes and eukaryotes cells, including cell membrane, in maintaining homeostasis and cell reproduction. – Why cells are the basic units of life?

9. Cell Theory
Some important scientists’ works helped to develop the cell theory:
a. Robert Hooke: Came up with the term “ cells.”
- Used a microscope to look at thin slices of cork
- The “boxy” sections he saw were actually the cell walls of dead plant cells.

10. Cell Theory
b. Anton van Leeuwenhoek: First scientist to observe microscopic organisms and living cells using a microscope

11. Cell Theory
c. Matthias Schleiden: Discovered that plants were made of cells d. Theodor Schwann: Discovered that animals are made of cells**THINK SWAN!

12. Cell Theory
e. Rudolf Virchow: Observed living cells dividing and proposed that “all cells arise from pre-existing cells”

13. Cell Theory 1. All living things are made of 1 or more cells.
2. All cells come from preexisting/other cells (refer to handouts A & B)
Francesco Redi disproved spontaneous generation
- Did a meat experiment: IV – lids
DV - # of maggots control- uncovered jars

15. Cell Theory Louis Pasteur also disproved spontaneous generation
- Did an experiment using broth & an S-shaped flask

17. Cell Theory 3. Cells are the basic unit of structure & function
Cells make up our internal & external body parts and allow these parts to do their jobs

18. Cell Theory Why is cell size important for a cell to function?
Cells are very small so that it’s quick and easy for nutrients to enter and reach every part of the cell & wastes to exit the cell
During cell growth, the cell’s volume increases more quickly than its surface area

19. EXIT Ticket: answer the following