CELL STRUCTURE
7 th Grade
Do Now…
◦Define organelles, nucleus, chloroplasts, and
mitochondria on index cards
◦Vocabulary Check will be tomorrow
Objectives
Students will…
◦Describe the development of the cell theory
◦Identify the names and functions of each part of a cell
Cell Theory
◦1) All organisms are made up of one or more
cells.
◦2) The cell is the basic unit of organization
of organisms.
◦3) All cells come from cells.
◦Wacky History of Cell Theory
Visualizing Microscopes
◦ Turn to pgs. 222-223 in your textbook
Microscope
Brightfield/Darkfield
Leeuwenhoek
Transmission Electron
Phase Contrast
Scanning Electron
Fluorescence
Facts
Cellular Organization
◦ http://www.cellsalive.com/cells/bactcell.htm (Prokaryotic)
◦ Label bacteria cell worksheet.
◦ Prokaryotic cells-are only found in one-celled organisms like bacteria.
◦ All cells must constantly take in nutrients, store, produce, breakdown
substances and take in and use energy.
◦ Prokaryotic vs. Eukaryotic
For Next Time…
◦Read pgs. 226-231
◦Define endoplasmic reticulum, golgi bodies, tissue,
organ and organ system.
CELL STRUCTURE
7th Grade
Do Now…
◦Which of the scientists who contributed to the development
of the cell theory is the most important? Explain your
thoughts.
Objectives
Students will…
◦Review cell structure vocabulary
Vocabulary Review Time
◦With a partner, review your cell structure vocabulary cards.
Make sure that you have the same number of cards and have
accurate definitions.
◦Quiz each other on the words and definitions.
For Next Time…
◦Continue to review vocabulary cards over the
weekend.
◦Each lab group needs to bring in one flashlight
for Monday’s mini lab.
◦ http://www.cellsalive.com/cells/3dcell.htm
(Practice labeling different types of cells.)
CELL STRUCTURE
(CONTINUED)
7 th Grade
Do Now…
◦Name the 3 parts of the cell theory.
Objectives
Students will…
◦Identify names and functions of each part of the
cell
◦Explain how important a nucleus is in a cell.
◦Compare tissues, organs and organ systems.
◦Model cytoplasm using gelatin
Cellular Organization
◦http://www.cellsalive.com/cells/cell_model.htm
(Eukaryotic)
◦Label plant/animal cell worksheet.
◦Eukaryotic cells have membrane-bound structure and
are found in protists, fungi, plants and animals.
◦Crash Course Animal Cells
◦Crash Course Plant Cells
Mini Lab-Modeling Cytoplasm
◦Purpose: Model Cytoplasm using gelatin.
◦Lab procedures/directions
◦Complete lab worksheet.
For Next Time…
◦Finish labeling plant/animal cell worksheets if needed.
Use textbook or cellsalive.com to help.
BILL NYE: CELLS
7th Grade
Do Now Together…
◦How are plant animal cells alike and different?
Many-Celled Organisms
◦ Cells in many-celled organisms do not work alone. They each carries on its
own life functions while depending on some way on other cells in the
organism.
◦ Many one-celled organisms perform all life functions on their own.
◦ Tissue is a group of similar cells that work together to do one job. Each cell
in a tissue does it part to keep the organ alive.
◦ Organ (made up of tissue) is a structure made of 2 or more different types
of tissues that work together. (muscle/blood tissue)
◦ Organ system is a group of organs working together to perform a certain
function. (heart, arteries, veins and capillaries)
Objectives
Students will…
◦Watch a Bill Nye video to review the major
components of cells
Bill Nye: Cells
◦Take a few minutes and write down 3 things that you
already know about heat on your worksheet.
◦As you are watching the video, write down 3 content
related questions you might have about the topics
discussed.
◦Finally, write down the 3 main points of the video in
the triangle on the back of the paper.
For Next Time…
◦No Homework!
◦Happy Thanksgiving 
◦Random Acts of Kindness