Transcript Introduction to Cells

Introduction to Cells
Unit 4
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
#
1/27 &
1/28
1
Activity
Page
#
What Does it Mean to be Alive?
1
Introduction to Cells Note Guide
2
Photosynthesis & Cellular Respiration Homework
3
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?
WARM UP:
Surprise!!
We are going outside for
our warm-up!
Living vs. Nonliving
TASK 1:
TASK 2:
Make a list of
5 living & 5
non-living
things
Make a list of
characteristics
you used to
determine if
something living
BIOLOGY
• BIO= Life
• OLOGY= study of
• BIOLOGY = Study of Life!
5 Characteristics of Living
Things:
Organized structure
Made of cells!
 Grow and Develop
 Respond to Environment
 Reproduce*
Need/use energy
Quick Comprehension !
Whiteboards ready!
Living (L)
• Non-living (N)
•
Living or Nonliving?
Living or Nonliving?
Living or Nonliving?
Living or Nonliving?
Living or Nonliving?
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???
What is a cell?
Cell- the smallest unit of any living thing
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
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.
Cell Theory: Example
1. Every living thing is
made up of one or
more cells.
A polar bear is a
multicellular organism.
400x
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.
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…
Quick Comprehension !
Whiteboards Ready!
Quick Comprehension !
• What Is Biology ?
Quick Comprehension !
• What determines
if something is
living?
Quick Comprehension !
•What’s an
organism ?
Quick Comprehension !
• What is this cell
theory and why
do I care?
Quick Comprehension !
•What are the 2
types of
organisms?
Well…There are also
2 Types of Cells
Eukaryotic
Prokaryotic
2 Types of Cells
Eukaryotic Cell
Prokaryotic Cell
• NO NUCLEUS
• HAS A NUCLEUS
• EXAMPLE: bacteria
• EXAMPLE: plant and
animal cells (multicellular) cells (unicellular)
Nucleus
What is the exception to the rule?
Quick Comprehension !
Whiteboards Ready!
- Multicellular or Unicellular
AND
- Eukaryotic or prokaryotic
“ME” & “UP”
Unicellular or multicellular?
E. Coli
Bacteria Cell
Eukaryotic or prokaryotic?
Unicellular or multicellular?
Human
Red
Blood
Cells
Eukaryotic or prokaryotic?
Unicellular or multicellular?
Fungi Cell
Eukaryotic or prokaryotic?
Unicellular or multicellular?
Human
Cheek Cells
Eukaryotic or prokaryotic?
Unicellular or multicellular
Onion Root
Cells
Eukaryotic or prokaryotic
Unicellular or multicellular?
Spiral
Bacteria
Eukaryotic or prokaryotic?
Unicellular or multicellular
Leaf Cells
Eukaryotic or prokaryotic?
Unicellular or multicellular
Protists
Eukaryotic or prokaryotic?
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!!!!
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
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!
HOMEWORK
• Complete the reading on Photosynthesis
& Cellular Respiration and answer the
questions.
• DON’T forget to create the Venn
diagram on the back!!
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