Transcript The Building Blocks of Life

The Building Blocks of Life
The Building Blocks of Life: Cells
• All living organisms are made up of
cells. Some organisms, such as the
paramecium and amoeba (Right)
have one cell, while others, such as
humans, have millions of cells.
• Each type of cell has its own
function, but they contain the basic
organelles. Each small part of the
cell is an organelle. Each organelle
has its own name and function.
• There are two main groups of cells
– Animal Cells and Plant Cells
The Building Blocks of Life: Cells
• Focus Question:
– How do we know that animal and plant cells are not
the same?
• Prediction:
– Do you think an animal cell and a plant cell will share
similar attributes?
• Do you think they will be very similar or very different?
Animal Cells
•
The animal cell is found in all animals and
humans.
•
All organisms begin as a single cell
•
Our bodies have approximately ten trillion cells.
•
A group of cells that are the same and carry out
a function together are called tissue.
•
Blood is made up of cells that carry oxygen and
carbon dioxide to other cells in your body.
•
Our bodies are constantly making new cells to
replace old cells that die.
•
When a cell reproduces by mitosis, it makes an
exact duplicated copy of itself.
Plant Cells
•
All life is dependent directly or indirectly from
plants because of the energy produced by
photosynthesis in the cells.
•
When a plan it watered, the water collects in the
vacuole of the plant cells. This helps the cells to
stay rigid, which keeps the plant from wilting.
The vacuole then helps maintain the shape of
the plant.
•
The Cell wall also helps give the plant its shape
and keep it rigid.
•
The color of flowers comes from pigments that
are also contained in the vacuoles.
•
The green color of plants comes from
Chlorophyll.
Cells
Animal
Plant
Cells
Animal
Plant
Rough ER
Contains
Cell Waste
Synthesize Proteins
lysosome
Smooth ER
Vacuole
Golgi Apparatus
Mitochondria
Ribosomes
cytoplasm
Holds Shape
Stores Water
Composed of RNA
Chromatin
Chloroplast - Photosynthesis
Cell membrane
centrioles
Nucleolus
nucleus
Cell Wall
Quick Write
Use the information you collected from your scientist
notebook to answer the following questions…
How do you know plant and animal cells are not the same?
-Describe the major organelles that a plant and animal cell have in
common.
-Describe the major organelles that a plant and animal cell don’t have in
common.
Why does a plant cell have a cell wall?
Why do animals cells not have chloroplast?
Claims and Evidence
• Focus Question:
– How do we know that animal and plant cells are not
the same?
I claim that…
I claim this because…
The Building Blocks of Life: Cells
Conclusion
• Revisit your original prediction and explain
whether the evidence from our investigation
supports it or not.
Reflection
• Respond to some of the following
– What really surprised you
– What new questions do you have
– What would you really like to know more
about