Aim: Cell Parts Enter Date Warm-up: HW:

What is a cell? The smallest unit that makes up a living thing!

Why study cells? Cells → Tissues → Organs → Bodies bodies are made up of cells cells do all the work of life!

The Cell Theory 1. All living things are made of cells 2. Cells are basic unit of structure and function 3. All cells come from pre-existing cells

Our organelles do all these jobs! The Jobs of Cells Cells have 3 main jobs make energy need energy for all activities need to clean up waste produced while making energy make proteins make more cells for growth to replace damaged or diseased cells Our organelles do all these jobs!

Organelles Organelles do the work of cells each structure has a job to do keeps the cell alive; keeps you alive They’re like mini-organs!

1. Cell (Plasma) Membrane Selectively Permeable Lets some substances in or out, but not others

FAT

The Cell Membrane is labeled A in both pictures

2. Nucleus Controls cell functions Has its own membrane Contains & Protects DNA

Letter B - Nucleus

3. Cytoplasm Jelly-like fluid Moves in a circular motion within cell

4. Endoplasmic Reticulum (ER) Network of channels Aids in transport of material around cell

4. Types of E.R Rough E.R. – contains ribosomes Smooth E.R.-make lipids, breakdown carbohydrates, detox poisons

Letter B - is the Endoplasmic Reticulum

5. Ribosomes Site of protein synthesis Can be free or attached to E.R. Letter C - Ribosomes

6. Golgi Bodies/ Apparatus Stacks of flattened tubes Where proteins are completed

7. Mitochondria Site of cellular respiration ATP  Energy!!! (POWERHOUSE)

8. Vacuoles LARGE in plants Hold water, food, or waste Small in animals

plant cells animal cells food vacuole central vacuole contractile vacuole

9. Lysosomes digest food clean up & recycle digest broken organelles digesting broken organelles vacuole small food particle digesting food

A Job for Lysosomes 6 weeks 15 weeks

Peroxisomes Use oxygen to break down fatty acids for use by the mitochondria. Produce hydrogen peroxide Found heavily in the liver

Organelles Only in Plant Cells Chloroplasts Contains green pigment - >chlorophyll traps light energy to make food

2. Cell Wall Non-living Supports and protects the cell Composed of cellulose

A B Letter A – Cell Wall Letter B – Chloroplasts (Where Photosynthesis Occurs) A B

Organelles Only in Animal Cells 1. Centrioles - used in cell division. release spindle fibers.

Animal Cell ▪jelly-like material holding organelles in place cytoplasm ▪food digestion ▪garbage disposal & recycling lysosome ▪transport/storage vacuole & vesicles ▪protects DNA ▪controls cell nucleus ▪make energy ▪builds proteins ribosomes ▪helps finish proteins mitochondria ▪finishes, packages & ships proteins Golgi apparatus ▪cell boundary ▪controls movement of materials in & out cell membrane ER Animal Cell

Cell Models: An Interactive Animation Plant Cell cytoplasm ▪jelly-like material around organelles ▪storage: food, water or waste central vacuole ▪support mitochondria ▪make ATP in cellular respiration cell wall lysosome ▪digestion & clean up ▪makes ATP & sugars in photosynthesis cell membrane ▪cell boundary ▪controls movement of materials in & out chloroplast