Plant Science Unit 2 Lesson 1: Plant Cell Structure and Microscope Lab.

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Presentation transcript:

Plant Science Unit 2 Lesson 1: Plant Cell Structure and Microscope Lab

T he A mazing Plant c ell!!

Why are Plant Cells so Amazing? CONVERT FOOD INTO ENERGY ADAPT TO OUTSIDE STIMULI

Cells can determine : How productive plants will be. How food tastes! Why plants get sick.

Amazing characteristics of cells! a.They are the smallest unit of a living system. b.They all hold the blueprints of how an animal is put together. c.They are vital to all life functions. d.They can reproduce!! e. They can change the physical form of a plant. Good traits and bad.

There are basically two cell types Eukaryotic cells (membrane bound) Prokaryotic cells (before nucleus)

A Prokaryote Cell Single-celled organisms Lacks internal structures Example: Bacteria

A Eukaryote Cell Has internal membrane- bound structures called organelles. The largest organelle is the Nucleus, which contains the cell’s DNA. May be made of one or many cells. Makes up most of all living cells. Red blood cell

How big are animal cells? 1 centimeter = 10 millimeters 1 millimeter = 1,000 micrometers

Cell sizes range from 200 micrometers… pinhead

200 micrometers Pin head Human hair

200 micrometers Dust Mite

20 micrometers

Lymphocyte Red Blood Cell Pollen grain Bakers yeast E-coli

200 nanometers Ebola virus

To 20 nanometers Rhinovirus

How did scientists discover cells? Using Microscopes!! –Instrument developed by 16 th century Anton van Leeuwenhoek.

CELL Theory states: All organisms are composed of one or more cells. The cell is the basic unit of organization of all organisms. All cells come from pre-existing cells.

Let’s go and look at some cells!! Step # 1Teacher demonstration of microscope use. Step # 2Students begin Microscope Lab 8.1 due today!!

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