OBJECTIVE

SWBAT: Identify cellular organelles and their purpose

HOW DOES A CELL DO ITS JOB?

Cell Organelles

What jobs do cells do?

Some examples: Making proteins, like keratin (hair follicles) Sending signals (nerve cells) Turning sunlight into glucose (leaf cells) Contracting for movement (muscle cells

Organelles Cooperate

Organelles work together to allow the cell to accomplish its job.

CONTROL AND PROTEIN

Nucleus, Ribosomes

The Nucleus

The Control CenterLocated in the center of the cellControls all functions of the cell, by

controlling protein production

Ribosomes

Ribosomes are the site of protein production. Located on the endoplasmic reticulumor floating freely in the cytoplasm

CELLULAR BOUNDARIES

The Cell Membrane and Cell Wall

Cell Membrane

Regulates what enters and leaves the cell.

Cell wall

The cell wall provides support to plant cells and bacteria.

ASSEMBLY AND TRANSPORT OF

PROTEINS

Endoplasmic Reticulum, Golgi Apparatus

Endoplasmic Reticulum (ER)

A system of folded membranes that transport proteins within the cell

Golgi Apparatus

G.A. marks proteins and exports them outside the cell in membrane bubbles called vesicles.

STORAGE AND RECYCLING

Vacuoles, Lysosomes

Vacuoles

Vacuoles are sacs that store water and other materials

Vacuoles are in plant cells.

Lysosomes

Membranous sac filled with enzymes (certain type of protein) that break down used organelles and large molecules

Known as the recycling center.

Day Two: Cell Organelles

OBJECTIVE

SWBAT: Identify cellular organelles and their purpose

ENERGY FOR THE CELL

Chloroplasts and Mitochondria

Chloroplasts

Capture the sun’s energy to make glucose (food) in plants and algae. Located in the cytoplasm and the the site of photosynthesis.

Brainstorm!

Take two minutes to write down reasons you think plants have chloroplasts and animals do not.

Mitochondria

“Power house” of the cell provides energy for cells. Cell that need more energy, have more mitochondria

Both the ER and the mitochondria have folded membranes to increase the surface area where chemical reaction occur

Think About It!

Take two minutes to think and write down whether you would expect muscle cells or fat cells to contain more mitochondria and why.

SUPPORT AND LOCOMOTION

Cytoskeleton, Cytoplasm, Cillia and Flagella

Cytoplasm

Jelly-like, clear fluid inside cell; holds organelles

Fills all space besides organelles

Cytoskeleton

Function: support structure of the cell.

Located in the cytoplasm

Cilia and Flagella

Movement of cell, made of microtubules.

Plants vs. Animals

Take two minutes and think of three organelles that plants have, and animals do not.

Plants vs. Animals

Brainstorm for two minutes and discuss with a shoulder partner, why plants need these organelles and animals do not.