How Plant and How Plant and Animal Cells DifferAnimal Cells Differ

Pages A6-A11Pages A6-A11

Discovery of CellsDiscovery of Cells

Too small to be seenToo small to be seen Microscopes invented: opening up the Microscopes invented: opening up the

world of tiny thingsworld of tiny things Robert Hooke was the first to see them Robert Hooke was the first to see them

The Discovery of CellsThe Discovery of Cells

1665, Robert Hooke 1665, Robert Hooke Looked at corkLooked at cork Named them “cells” after rooms in Named them “cells” after rooms in

monasteries monasteries

The Cell Theory- Part 1The Cell Theory- Part 1

Cells are the building blocks of all living Cells are the building blocks of all living thingsthings They make up everything that is aliveThey make up everything that is alive Larger organism have more cellsLarger organism have more cells Why would Hooke see cells in cork?Why would Hooke see cells in cork?

The Cell Theory- Part 2The Cell Theory- Part 2

All life activities take place in cellsAll life activities take place in cells Different types of cells do different thingsDifferent types of cells do different things Example: muscle cells contract to make us Example: muscle cells contract to make us

movemove

The Cell Theory- Part 3The Cell Theory- Part 3

New cells are made from old cellsNew cells are made from old cells Living things grow larger from their cells Living things grow larger from their cells

producing more cellsproducing more cells New cells replace old cellsNew cells replace old cells

Ex: dry skin falls off, new skin cells replace the Ex: dry skin falls off, new skin cells replace the oldold

Questions about the Questions about the discovery of cellsdiscovery of cells

Who first discovered cells?Who first discovered cells? Before the invention of the microscope, why couldn’t Before the invention of the microscope, why couldn’t

scientists learn what living things were made of?scientists learn what living things were made of? Are all cells alike?Are all cells alike? Are all organisms made up of millions of cells?Are all organisms made up of millions of cells? How does an organism grow?How does an organism grow? Why don’t all cells look exactly alike?Why don’t all cells look exactly alike? In what ways are cells different?In what ways are cells different? In what ways are cells alike?In what ways are cells alike? What are the three parts of the cell theory?What are the three parts of the cell theory?

The Parts of a cellThe Parts of a cell

An animal cellAn animal cell Cell membraneCell membrane VacuolesVacuoles ChromosomesChromosomes Nuclear membraneNuclear membrane NucleusNucleus CytoplasmCytoplasm Mitochondria Mitochondria

Parts of a cellParts of a cell

A plant cellA plant cell Same parts as animal cell plus:Same parts as animal cell plus:

Cell wallCell wall ChloroplastsChloroplasts

To help you remember…To help you remember…

Mighty MitochondriaMighty Mitochondria

Vacuum like VacuolesVacuum like Vacuoles

Cell and nuclear membraneCell and nuclear membrane

To help you remember To help you remember about the plant cell….about the plant cell….

Cell wall: gives plant cell it’s shapeCell wall: gives plant cell it’s shape

Chloroplasts: contain chlorophyll Chloroplasts: contain chlorophyll Makes plant food…Makes plant food… Makes plant greenMakes plant green

Questions about cell Questions about cell partsparts

How are you similar to a flower or a bird?How are you similar to a flower or a bird? What two structures do plant cells have What two structures do plant cells have

that animal cells do not have? that animal cells do not have? What is the function of the cell wall?What is the function of the cell wall? Why don’t animal cells have Why don’t animal cells have

chloroplasts?chloroplasts? What part gives the cell power?What part gives the cell power?

The Nucleus of the CellThe Nucleus of the Cell

The nucleus is the control center or brain The nucleus is the control center or brain of the cellof the cell

Contains Chromosomes Contains Chromosomes Chromosomes are made up of DNA Chromosomes are made up of DNA

“blueprint of life” “blueprint of life” Makes up who you areMakes up who you are

Questions about the Questions about the nucleusnucleus

Why do you think the nucleus is Why do you think the nucleus is sometimes called the brain of the cell?sometimes called the brain of the cell?

How are chromosomes and DNA How are chromosomes and DNA related?related?

What is DNA?What is DNA?