Pre-ICFES - Biology

Cell BiologyPart 1

Ms. Marcos - 2010-2011

Cell Structures and Functions

Take the Cell Biology Challenge!

A prokaryotic cell

A eukaryotic cell

Prokaryotes vs. Eukaryotes

Us vs. Them -Eukaryotes and Prokaryotes

Celula Animal

Celula Vegetal

Study Tip: Make a table

Study Tip: Draw a Venn Diagram

Plant vs. Animal Cells

How will the cell respond?

Movement Across a Membrane

•Simple Diffusion

•Osmosis diffusion of WATER

Cell Membranes – What are the parts?

What can get across a membrane?•Ions?•Sugar?•Protein?•Water?•Oxygen?

•What rules define whether something can enter/exit a cell via diffusion?

Define the terms:

Diffusion

Facilitated Diffusion

Active Transport

Give examples

Endocytosis and Exocytosis•Is this active or passive transport?

Three types of Endocytosis

More questions...

•How big are cells?•What needs to enter/exit a cell?•How does it get in/out?•What determines how large a cell can get?•How can cells get larger and still function?

•Why do cells need to divide?•What must cells do before dividing?

Mitosis:

What is happening at each stage?

http://www.cellsalive.com/mitosis.htm