Cells Objective: I will examine the parts of a cell. Objective: I will examine the parts of a cell. Homework: Homework: Study parts of the cell!

Warm up 1.Which best describes the difference between unicellular and multicellular organisms? a) Unicellular organisms have nuclei, while multicellular organisms do not. b) Unicellular organisms produce their own energy, while multicellular organisms must get energy from another source. c) Unicellular organisms reproduce and then die, while multicellular organisms can reproduce many times. d) Unicellular organisms carry out all life processes within one cell, while multicellular organisms contain cells that have specialized jobs. 2.What is the smallest unit of life called? 3.What are living things made of?

Agenda for Today Do Now Do Now Review Review Cells Scavenger Hunt Cells Scavenger Hunt Introduction to cell organelles Introduction to cell organelles Drillin and Killin Game (if time permits) Drillin and Killin Game (if time permits) Cells video Cells video Cells paragraph Cells paragraph

Review Homeostasis: Examples Homeostasis: Examples Requirements of living things Requirements of living things

PARTS OF A CELL

Cell Theory Robert Hooke was the scientist that discovered the cell. Scientist summarized their observations and evidence into 3 basic concepts known as the cell theory. 1. All living things are made of one or more cells. 2. A cell is the smallest unit of life. 3. All cells come from other living cells.

Eukaryotic Cells  First cells to evolve  No nucleus  Hereditary info is contained within cytoplasm Examples: Bacteria Prokaryote Cells  Evolved from prokaryotes  Have a nucleus  Hereditary info is contained within the nucleus Examples: 1. Animals 2.Protists 3.Plants

Eukaryotic Cells Eukaryotic Cells have many different specialized parts. Eukaryotic Cells have many different specialized parts. Cell function is most dependent on the structure of the cell. Cell function is most dependent on the structure of the cell. A cell’s structure will determine what function it performs within an organism. A cell’s structure will determine what function it performs within an organism. Think back to the previous lesson when you learned that cells make up tissues that make up organs. Cells in the heart (blood cells) are expected to do different things than the cells that make up your skin.

Eukaryotic Cell Diagram= Animal cell Use this diagram to fill out your diagram.

Eukaryotic Cell Parts Function Cell Membrane “Door” Provides a barrier between the cell and its environment. All nutrients and waste move across the cell membrane. Nucleus “Brain” Controls the functions of the cell. Acts as the “brain” of the cell. Mitochondria “Duke power” Makes energy that can be used by the cell. Lysosome “Digestive system” Breaks down waste into a form that can be removed from the cell. Breaks down the cell itself if the cell is damaged or old. Endoplasmic Reticulum “subway” Transports nutrients and waste within the cell. Vacuoles “Water bottle” Holds water transported into the cell until used by the cell.

Differences Between Plant and Animal Cells? Where do plants get there energy from? Where do plants get there energy from? Where to animals get there energy from? Where to animals get there energy from? Plant cells have central vacuoles, chloroplasts and a cell wall that help them turn solar energy into food and store their water. Plant cells have central vacuoles, chloroplasts and a cell wall that help them turn solar energy into food and store their water. Animal cells have none of the above. Instead of a central vacuole, an animal cell has lysosomes that break down materials (food) that are brought into the cell.

Exit slip 1. Cell function is most dependent on which cell characteristic? a. size b. shape c. color d. structure 2. Which is the primary function of mitochondria in animal cells? a. to release energy b. to provide support c. to store materials d. to transport waste 3. How do lysosomes function inside the cell? a. Lysosomes manufacture proteins for the cell. b. Lysosomes distribute enzymes throughout the cell. c. Lysosomes assist the nucleus in DNA synthesis. d. Lysosomes serve as the cell’s digestive system.

Create a Cell! Use construction paper to create the different parts of a cell…BE CREATIVE!!! Use construction paper to create the different parts of a cell…BE CREATIVE!!! Do BOTH Plant and Animal Cells Do BOTH Plant and Animal Cells Yellow textbook For a picture see page C22

Step 1: Holding an 8 1/2" x 11" paper horizontally, fold both ends in so they meet, but do not overlap. Step 2: Draw, color, and label the outside left flap as a plant cell and the outside right flap as an animal cell. Next Slide will show you an example of how the outside of your foldable should be.

Step 3: With your paper flat (flaps open), you will have three sections formed by your folds. The far left section will be for plant cell differences, the far right section for animal cell differences, and the center for similarities between plant and animal cells. In each of these sections, cell organelles will be listed and defined. Next page will have a picture example of how the inside should be down

Plant Cell Animal Cell