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Introduction to CellsUnit 4
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PRE-WARM UP:• Start a new Table of Contents – “Life Science –
Molecular Biology”• Write your homework – leave it to be
stamped• MAKE SURE YOUR YOU HAVE SOMETHING TO
CORRECT YOUR TEST WITH!Date Session
#Activity Page
#1/27 & 1/28
1 What Does it Mean to be Alive? 1
Introduction to Cells Note Guide 2
Photosynthesis & Cellular Respiration Homework 3
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PRE-WARM UP:
• On page 1 of your notebook, answer the following questions: –What does it mean to be alive?
• How do you determine if something is living?
–What do the words biotic & abiotic mean?
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WARM UP:
Surprise!! We are going outside for
our warm-up!
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Living vs. Nonliving
TASK 1:Make a list of 5 living & 5 non-living things
TASK 2:Make a list of characteristics you used to determine if something living
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5 Characteristics of Living Things:
Organized structureMade of cells!
Grow and Develop Respond to Environment Reproduce*Need/use energy
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Quick Comprehension !
Whiteboards ready!
• Living (L)• Non-living (N)
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Living or Nonliving?
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Living or Nonliving?
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Living or Nonliving?
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Living or Nonliving?
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Living or Nonliving?
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Let’s Start With Organized Structure…
Organism- A living thing made up of AT LEAST one cell (most have many cells)
Wait a Minute!....What‘s a cell???
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What is a cell?Cell- the smallest unit of any living thing
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2 Types of Organisms: One Cell or Many Cells?
Unicellular• Organisms made up
of only ONE cell• Examples: amoeba,
bacteria
Multicellular• Organism made up
of MANY cells• Examples: plants,
animals, humans
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OK…The truth about cells:
• The reason cells are important to life is summarized in the Cell Theory:
1.Every living thing is made of one or more cells.2.Cells carry out the functions needed to
support life.3.Cells can only come from other living cells.
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Cell Theory: Example1. Every living thing is
made up of one or more cells.
A polar bear is a multicellular organism.
2. Cells carry out the functions needed to support life.
Every type of cell has a different function, for example fat cells
provide extra energy as well as insulation.
400x
3. Cells come only from other living
cells. Each polar bear cub
began as a single cell. That single cell split
into 2, those 2 split into 4 and so on…
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Quick Comprehension !
Whiteboards Ready!
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Quick Comprehension !
•What Is Biology ?
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Quick Comprehension !
•What determines if something is
living?
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Quick Comprehension !
•What’s an organism ?
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Quick Comprehension !
•What is this cell theory and why
do I care?
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Quick Comprehension !
•What are the 2 types of
organisms?
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Well…There are also 2 Types of Cells
Eukaryotic Prokaryotic
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2 Types of CellsEukaryotic Cell
• HAS A NUCLEUS• EXAMPLE: plant and
animal cells (multicellular)
Prokaryotic Cell
• NO NUCLEUS• EXAMPLE: bacteria
cells (unicellular)Nucleus
What is the exception to the rule?
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Quick Comprehension !
Whiteboards Ready!
- Multicellular or UnicellularAND
- Eukaryotic or prokaryotic
“ME” & “UP”
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Unicellular or multicellular?
E. Coli Bacteria Cell
Eukaryotic or prokaryotic?
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Unicellular or multicellular?
Human Red
Blood Cells
Eukaryotic or prokaryotic?
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Unicellular or multicellular?
Fungi Cell
Eukaryotic or prokaryotic?
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Unicellular or multicellular?
Human Cheek Cells
Eukaryotic or prokaryotic?
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Unicellular or multicellular
Onion Root Cells
Eukaryotic or prokaryotic
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Unicellular or multicellular?
Spiral Bacteria
Eukaryotic or prokaryotic?
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Unicellular or multicellular
Leaf Cells
Eukaryotic or prokaryotic?
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Unicellular or multicellular
Protists
Eukaryotic or prokaryotic?
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Tie It Together…What Do All Cells Need?
• Ok, regardless if an organism is unicellular or multicellular – prokaryotic or eukaryotic…what do they all need to function????
ENERGY!!!!
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Where Do They Get Their Energy?
It Depends…Animal Cells – consume food and their cells
create energy through the process of CELLULAR RESPIRATION
Plant Cells – use the sunlight and their cells convert it into energy through the process of PHOTOSYNTHESIS
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But How…?• Read about the 2 processes for now, and next
time we will see how each part of a cell has a specific job to do to make these processes possible!– DO NOW: Read the Photosynthesis & Cellular
Respiration article and answer the questions– HOMEWORK: Create a Venn diagram or chart
on the back to compare & contrast the processes!
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HOMEWORK
• Complete the reading on Photosynthesis & Cellular Respiration and answer the questions.
• DON’T forget to create the Venn diagram on the back!!
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Extra Credit Opportunity
• Discovery of Cells: 10 points• Research the following information and write a well
crafted paragraph about it:– When was the microscope invented?– Who invented the microscope?– When was the first cell discovered?– Who discovered it?– Add 2 additional facts that you found that support
this topic and its importance to the field of biology