1. Unit 4: Microbiology
Lesson 1: The Cell

2. Day 1 Objective Agenda Bell Work Unit 4 Overview Note packet
Discuss State Standards
Discuss Objectives
Note packet
Vocabulary
Unit Summary
Unit Timeline
It is essential that students obtain and communicate information to support claims that (1) organisms are made of one or more cells, (2) cells are the basic unit of structure and function of organisms, and (3) cells come only from existing cells.
It is essential that students be able to analyze and interpret data to describe and classify a cell as plant, animal, bacteria, or protest
It is essential that students develop and use models to explain how various organelles within a cell function and relate their function to the cell’s overall survival.
It is essential that students construct scientific arguments to support claims that bacteria are both helpful and harmful to other organisms and their environment.

3. Day 3 Bell Work Look up the term microbiology. What does it mean?
Look up cell. What does it mean?

4. Day 3 Agenda Bell Work Notes Lesson 1 Part 1: The Cell Theory
Time Line (Due Monday Nov. 12)

5. Day 2 Objectives and Standards
Standard 7.L.3: The student will demonstrate an understanding of how the levels of organization within organisms support the essential functions of life.
7.L.3A Conceptual Understanding: Cells are the most basic unit of any living organism. All organisms are composed of one (unicellular) or many cells (multicellular) and require food and water, a way to dispose of waste, and an environment in which they can live in order to survive. Through the use of technology, scientists have discovered special structures within individual cells that have specific functions that allow the cell to grow, survive, and reproduce. Bacteria are one-celled organisms found almost everywhere and can be both helpful and harmful. They can be simply classified by their size, shape and whether or not they can move.
7.L.3A.1: Obtain and communicate information to support claims that (1) organisms are made of one or more cells, (2) cells are the basic unit of structure and function of organisms, and (3) cells come only from existing cells
It is essential that students obtain and communicate information to support claims that (1) organisms are made of one or more cells, (2) cells are the basic unit of structure and function of organisms, and (3) cells come only from existing cells.

6. Theory A well tested explanation for a broad set of observations.
May use models.
May allow predictions.
Theories may change to explain new observations.

7. Law
A statement that summarizes results of observations, but does not explain them.
Changes or is abandoned when contradicted by new experiments.
Laws are descriptions often mathematical descriptions of natural phenomenon

8. The Cell
LIFE IS CELLULAR

9. The History of Cell Biology
A person who studies cells is called a cytologist.
They work in the field of cytology.

10. The History of Cell Biology
Anton van Leeuwenhoek
1600’s
Became the first to use a microscope to study nature.
Was the first person to see tiny living organisms in water.

11. The History of Cell Biology
Robert Hooke
1665
Saw “cells” in a cork under a light microscope.

12. The History of Cell Biology
Matthias Schleiden
1838
Concluded that all plants have cells.

13. The History of Cell Biology
Theodor Schwann
1839
Concluded that all animals have cells.

14. The History of Cell Biology
Rudolf Virchow
1855
Studied cell reproduction

15. The Cell Theory A cell is the basic unit of life.
All of the scientists’ work contributed to what is now called the cell theory:
All living things are composed of one or more cells.
Cells are the basic units of structure and function in an organism.
Cells come only from the reproduction of existing cells.

16. Unicellular Organisms
Sometimes the cell is the organism.
Do everything that you would expect a living thing to do.
Include both prokaryotes and eukaryotes.
Prokaryotes: bacteria and archae
Eukaryotes: some types of algae, protists, fungi.

18. Multicellular Organisms
Made up of more than one cell.
Cells in multicellular organisms are specialized to perform particular functions within the organism.
This is called cell specialization.
Think:
blood cells, hair cells, digestive cells, etc.

20. Unit 4: Microbiology
Lesson 1 Part 2: Cell Division

21. Day 4 Bell Work Life is __________________________.
What are the three parts of the cell theory?
Name the major people who helped with the cell theory and the years that they made their discoveries.

22. Day 4 Agenda and Objectives
It is essential that students obtain and communicate information to support claims that (1) organisms are made of one or more cells, (2) cells are the basic unit of structure and function of organisms, and (3) cells come only from existing cells.

23. Day 4 SC Standards
Standard 7.L.3: The student will demonstrate an understanding of how the levels of organization within organisms support the essential functions of life.
7.L.3A Conceptual Understanding: Cells are the most basic unit of any living organism. All organisms are composed of one (unicellular) or many cells (multicellular) and require food and water, a way to dispose of waste, and an environment in which they can live in order to survive. Through the use of technology, scientists have discovered special structures within individual cells that have specific functions that allow the cell to grow, survive, and reproduce. Bacteria are one-celled organisms found almost everywhere and can be both helpful and harmful. They can be simply classified by their size, shape and whether or not they can move.
7.L.3A.1: Obtain and communicate information to support claims that (1) organisms are made of one or more cells, (2) cells are the basic unit of structure and function of organisms, and (3) cells come only from existing cells

24. Mitotic Phase (M-Phase)
4 phases of mitosis:
Prophase
Metaphase
Anaphase
Telophase
Results in IDENTICAL cells.

25. Mitosis Prophase First and longest phase of mitosis
Chromosomes become visible
Centrioles separate to opposite sides of nucleus.

26. Mitosis Metaphase 2nd phase of mitosis
Chromosomes line up in the center of the cell.

27. Mitosis Anaphase 3rd phase of mitosis
Chromosomes move apart until they have separated into 2 groups opposite each other.
Ends when the chromosomes stop moving.

28. Mitosis Telophase 4th phase of mitosis
Chromosomes disperse into a tangle of dense material.
Nucleus reforms
Mitosis is complete.