Transcript The cell wall

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 First
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how about the cell theory? I’m glad
you asked - here it is:
All organisms are made up of one or
more cells
Cells are the fundamental and structural
unit of life
All cells come from pre-existing cells
PROKARYOTIC
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
For example: Bacteria
Do not have membrane
bound organelles – it’s DNA
is throughout the cell, not in
a nucleus:
EUKARYOTIC
o For example: Animal
cells
o Have membrane bound
organelles – the DNA is
enclosed by a Nucleus
(control center of the cell)
ANIMAL CELL
PLANT CELL
 Yup, one
thing is a cell wall:
The cell wall is used for support of the cell
 Yup
– you guessed it – Chloroplasts
Chloroplasts contain
chlorophyll which is
a pigment that
absorbs the sun’s
rays – this is
important in a
process called……..
 Photosynthesis
is the process by which
plants use carbon dioxide (CO2), Water
(H2O) and light energy to produce
Oxygen(O2) and food in the form of
sugar – it looks like this:
 This
is called cellular respiration and it
happens in the mitochondria of animal
cells.
 In cellular respiration, sugar is combined
with oxygen to produce carbon dioxide,
water and energy.
 Patience
– I was getting to it – the cell
membrane allows things to flow in and
out of the cell:
 Well, I’m
glad you asked. Prokaryotic cells
(bacteria) reproduce by a process called
binary fission
 Eukaryotic
cells reproduce by a process
called mitosis. It is much more
complicated than prokaryotic cells and
looks like this:
1)
2)
3)
4)
All cells come from ____________.
Prokaryotic cells do not have
___________.
The DNA of eukaryotic cells is in the
________, which is also known as the
_______ ________ of the cell.
Which cell is this?
5) What is the structure surrounding a plant
cell?
6) What is it’s purpose?
7) What is another organelle that a plant
cell has but an animal cell doesn’t?
8) What special pigment does the
organelle from question 7 have and why
is it important?
9)
10)
11)
12)
13)
14)
15)
16)
17)
What is photosynthesis?
What is cellular respiration?
How are the two processes related?
What is diffusion?
What is osmosis?
Why is the cell membrane important?
What is the difference between passive
and active transport?
How does a prokaryotic cell reproduce?
What is the name for the process used by
eukaryotic cells for reproduction?
1)
2)
3)
4)
5)
All cells come from pre-existing cells.
Prokaryotic cells do not have membrane
bound organelles.
The DNA of eukaryotic cells is in the
nucleus, which is also known as the
control center of the cell.
Which cell is this?
Plant
5) What is the structure surrounding a plant
cell? The cell wall
6) What is it’s purpose? To support the cell
7) What is another organelle that a plant cell
has but an animal cell doesn’t?
Chloroplasts
8) What special pigment does the organelle
from question 7 have and why is it
important? Chlorophyll which absorbs
the lights rays
9)
10)
11)
12)
13)
14)
15)
16)
17)
What is photosynthesis? The process by which light
energy and CO2 and water produce O2 and energy
What is cellular respiration? The process by which O2
and sugar produce CO2, H2O and energy
How are the two processes related? Plants use our CO2
and we use their O2
What is diffusion? When something goes from a high
concentration to a low concentration
What is osmosis? Diffusion through a cell membrane
Why is the cell membrane important? It lets things in and
out of the cell
What is the difference between passive and active
transport? Active transport requires energy
How does a prokaryotic cell reproduce? Binary fission
What is the name for the process used by eukaryotic cells
for reproduction? Mitosis