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How Plant and Animal Cells Differ Pages A6-A11. Discovery of Cells  Too small to be seen  Microscopes invented: opening up the world of tiny things.

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Presentation on theme: "How Plant and Animal Cells Differ Pages A6-A11. Discovery of Cells  Too small to be seen  Microscopes invented: opening up the world of tiny things."— Presentation transcript:

1 How Plant and Animal Cells Differ Pages A6-A11

2 Discovery of Cells  Too small to be seen  Microscopes invented: opening up the world of tiny things  Robert Hooke was the first to see them

3 The Discovery of Cells  1665, Robert Hooke  Looked at cork  Named them “cells” after rooms in monasteries

4 The Cell Theory- Part 1  Cells are the building blocks of all living things  They make up everything that is alive  Larger organism have more cells  Why would Hooke see cells in cork?

5 The Cell Theory- Part 2  All life activities take place in cells  Different types of cells do different things  Example: muscle cells contract to make us move

6 The Cell Theory- Part 3  New cells are made from old cells  Living things grow larger from their cells producing more cells  New cells replace old cells  Ex: dry skin falls off, new skin cells replace the old

7 Questions about the discovery of cells  Who first discovered cells?  Before the invention of the microscope, why couldn’t scientists learn what living things were made of?  Are all cells alike?  Are all organisms made up of millions of cells?  How does an organism grow?  Why don’t all cells look exactly alike?  In what ways are cells different?  In what ways are cells alike?  What are the three parts of the cell theory?

8 The Parts of a cell  An animal cell  Cell membrane  Vacuoles  Chromosomes  Nuclear membrane  Nucleus  Cytoplasm  Mitochondria

9 Parts of a cell  A plant cell  Same parts as animal cell plus:  Cell wall  Chloroplasts

10 To help you remember…  Mighty Mitochondria  Vacuum like Vacuoles  Cell and nuclear membrane

11 To help you remember about the plant cell….  Cell wall: gives plant cell it’s shape  Chloroplasts: contain chlorophyll  Makes plant food…  Makes plant green

12 Questions about cell parts  How are you similar to a flower or a bird?  What two structures do plant cells have that animal cells do not have?  What is the function of the cell wall?  Why don’t animal cells have chloroplasts?  What part gives the cell power?

13 The Nucleus of the Cell  The nucleus is the control center or brain of the cell  Contains Chromosomes  Chromosomes are made up of DNA “blueprint of life”  Makes up who you are

14 Questions about the nucleus  Why do you think the nucleus is sometimes called the brain of the cell?  How are chromosomes and DNA related?  What is DNA?


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