1. What are the 2 types of eukaryotic cells?

1. Which organelle makes energy?

2. Which organelle stores food?

3. Which organelle breaks down food?

4. What are the three rules of Cell Theory?

Cells in Action

Learning HOW Cells Work

Moving Particles In/Out

Moving Small Particles:

◦ Passive Transport

◦ Active Transport

Moving Large Particles:

◦ Endocytosis

◦ Exocytosis

Active vs. Passive Transport

Passive Transport - The movement across a cell membrane without energy.

◦ High to Low concentration

◦ Ex: Osmosis & Diffusion

or Facilitated Diffusion

Active Transport - The movement opposite to normal diffusion, requiring energy (ATP).

◦ Low to High concentration

Diffusion vs. Osmosis

Diffusion – When particles move from a region of higher to one of lower concentration.

Osmosis - movement of fluid (water) through a semi permeable membrane from High to Low concentration.

◦ Wants to reach Homeostasis

** Osmosis is the diffusion of water

Blue particles are water

Endocytosis vs Exocytosis

Endocytosis – the process of entering

into a cell

Exocytosis – the process of exiting a cell

Energy Produced by Cells

A cell can produce energy in one of these

three ways:

1.Cell respiration

2.Fermentation

3.Photosynthesis

#1 - Cell Respiration

How cells make energy using Oxygen

Glucose + O2 CO2 + H2O + Energy

(sugar) (ATP)

#2 - Fermentation

Process of making energy without

Oxygen

Less efficient than cellular respiration

Typically seen in bacteria, protists and

some fungi

Glucose + Energy Ethanol + CO2 + H2O + Energy

(sugar) (ATP) (ATP)

#3 - Photosynthesis

Process of Making food in a Plant cell

CO2 + H2O + Light Energy Glucose + O2

(sugar)

Cell Division

Prokaryotic Cells

◦ Reproduce by Binary Fission

•Eukaryotic Cells

–Reproduce by Mitosis

Binary fission

Mitosis

Binary Fission – Prokaryotic Cell

Division

Rapid Reproduction of prokaryotic cells

Bacterial Growth Video - Teacher Tube

Bacteria on a Dish Song

Mitosis – Eukaryotic Cell Division

I Picked My Apples Today Cheerfully

6 Steps of Eukaryotic Cell Division

◦ Interphase

◦ Prophase

◦ Metaphase

◦ Anaphase

◦ Telophase

◦ Cytokinesis

Cells Alive

Mitosis