Homeroom: Read quietly or complete any missing assignments. SIT IN YOUR ASSIGNED SEAT!!

Warm UP How is a plant cell different from an animal cell? List at least 3 ways. COMPLETE ON PAGE 39 OF NOTEBOOK. How is a plant cell different from an animal cell? List at least 3 ways. COMPLETE ON PAGE 39 OF NOTEBOOK. Plant Cell vs. Animal Cell

What does it mean to be alive?  Living things have these characteristics: The ability to develop and grow Organization The ability to respond to the environment The ability to reproduce The ability to eat  Living things have these characteristics: The ability to develop and grow Organization The ability to respond to the environment The ability to reproduce The ability to eat

What is a cell?  The cell is one of the most basic units of life  There are millions of different types of cells  The cell is one of the most basic units of life  There are millions of different types of cells

Latin origin  Cells come from the Latin word cella meaning “small room”

First Observed by…..  First discovered in 1665 by Robert Hooke through a microscope  Over time the cell theory was made…..  First discovered in 1665 by Robert Hooke through a microscope  Over time the cell theory was made…..

Cell Theory  First discovered in 1839 by Matthias Jakob Schleiden and Theodor Schwann All organisms are composed of one or more cells Cells come from pre-existing cells Vital functions of an organisms occurs within cells Cells contain genetic information to carryout cell function, and passing on information for the next generation  First discovered in 1839 by Matthias Jakob Schleiden and Theodor Schwann All organisms are composed of one or more cells Cells come from pre-existing cells Vital functions of an organisms occurs within cells Cells contain genetic information to carryout cell function, and passing on information for the next generation

What does a cell need to do? Extract energy for food Getting rid of waste Movement and secretion of waste Extract energy for food Getting rid of waste Movement and secretion of waste

Types of organisms  Unicellular One celled Makes their own food or consumes it Simple Move without feet, another source  Unicellular One celled Makes their own food or consumes it Simple Move without feet, another source  Multicellular Many cells Gets food from other sources Complex Moves with feet or appendages

Examples of Single cell organisms Amoeba Paramecium Volvox Euglena Amoeba Paramecium Volvox Euglena

Paramecium How does it move? Moves by cilia (tiny hairs surrounding the cell How does it eat? Uses cilia to gather food as it sweeps across its surroundings. How does it reproduce? Sexually and asexually One nucleus for each (2 of them!) Asexually most of the time-binary fission Sexually if in stressful conditions

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Amoeba How does it move? Cytoplasmic streaming: movement of the cytoplasm to gain nutrients How does it eat? Using pseudopods “false feet” which engulfs solid particles. How does it reproduce? Asexually-binary fission-splits into two

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volvox How does it move? They live in colonies! Each cell in the colony has a Flagellum(tail) How does it eat? Contains an eye spot; Swims towards light for Photosynthesis (they’re green!) How does it reproduce? Forms a daughter colony inside of Itself that splits off Sometimes sexually: one colony produces egg They other produces sperm

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Euglena How do they move? Flagellum-tail-like structure How do they eat? Absorbed through the cell or photosynthesis. Has plant and animal characteristics How do they reproduce? asexually->binary fission->splits in two

Classwork Each reading passage will give you more detailed information about these organisms. As you are reading, color and label the pictures as the article describes. After you read each section, answer the questions on page 40. DO NOT WRITE ON THE READING PASSAGES! *Once you are done coloring, you will staple your worksheet onto page 41.