how are cells involved when we inherit traits? wednesday, 10/14/2015 cwszifklm
TRANSCRIPT
How are cells involved when we inherit traits?
Wednesday, 10/14/2015
https://www.youtube.com/watch?v=gwcwSZIfKlM
Truth or Lie?
1.Each set of partners will have 12 cards with statements about cells.
2.Together – Sort them into piles of statements that are true and statements that are false.
3.Be ready to answer questions quickly about which ones are true and which are false.
I will read off:• The statement number• Ask you to signal with thumbs up if it’s
true
Don’t rely on others!
Truth or Lie?
1. All matter is made up of cells.
2. All living things are made up of cells.
3. There are no single-celled organisms.
4. Leaves contain cells, but roots do not.
5. Cells do not carry out essential life functions for the organism
they are part of
6. In the early development of an organism, cells grow in size
but the number of cells remains constant.
7. Cells provide structure but not function to living things.
8. New cells can only come from existing cells.
9. Some living parts of organisms are not made of cells
10.All cells are the same size and shape.
11.Cells are the smallest functional unit of a living thing.
12.Organisms grow when existing cells get larger
Cell Theory – Which are true?
The 3 Correct Statements make up the Cell Theory
Cells are the smallest functional unit of a living thing.
All living things are made up of cells.
New cells can only come from existing cells.
All living things are made up of cells
Cells Colored dots
Human Heart Magazine Pictures
made of many tiny made of many tinyas
More Analogies using a Bridge map
Cells Bricks
Human Heart LEGO car
made of many tiny made of many tinyas
More Analogies using a Bridge map
Cells . . .
Human Heart . . .
made of many tiny made of many tinyas
?
?
New cells can only come from existing cells
One Cell
Becomes 2
Allium cells in different phases of the cell cycle
What are the
squiggly black
things?
New cells can only come from existing cells Analogy
cells . . .
cells . . .
Come from existing Come from existingas
?
?
Cells are the smallest functional unit of a living thing
RNA
Ribosome
Protein
How many organelles can you
remember from our cell
sale presentations
?
Smallest functional unit Analogy
Muscle group Team
Muscle Cells PlayerSmallest functional unit
as
PHOTOS: http://science.nationalgeographic.com/science/photos/heart/#/donor-heart_933_600x450.jpg http://en.wikipedia.org/wiki/Muscle, http://district.bluegrass.kctcs.edu/rmccane0001/shared_files/bio137website/BIO137/137Lab8/Lab8Images/LegMuscles-names.jpg
?
Smallest functional unit
Smallest functional unit Analogy
Muscle group . . .
Muscle Cells . . .Smallest functional unit
as
PHOTOS: http://science.nationalgeographic.com/science/photos/heart/#/donor-heart_933_600x450.jpg http://en.wikipedia.org/wiki/Muscle, http://district.bluegrass.kctcs.edu/rmccane0001/shared_files/bio137website/BIO137/137Lab8/Lab8Images/LegMuscles-names.jpg
?
Smallest functional unit
?
Cells are the smallest functional unit of a living thing
Gland cells Digestive enzymes
Hormone cells Thyroid cells that fuel your metabolism
Keratin cells Hair root sheath cell
Nerve Cells Sense hot and cold
Muscle Cells Movement and heart
Blood Cells Carry oxygen/carbon dioxide, fight
Human body has
230 DIFFERENT
types of cells
Microscope work led to discovery of cells
• Used light microscope to look at thin slices of plant tissues -- cork
• Looked empty, like monk’s chamber
• Called tiny chambers “cells”
Robert Hooke ( 1665)
Leeuwenhoek ( 1600’s)
• First to see living microscopic organisms
Using the Cell Theory, answer these 3 questions:
What function does a cell have?
Where do cells come from?
How do organisms grow?
1. All matter is made up of cells.
2. All living things are made up of cells.
3. There are no single-celled organisms.
4. Leaves contain cells, but roots do not.
5. Cells do not carry out essential life functions for the organism
they are part of
6. In the early development of an organism, cells grow in size
but the number of cells remains constant.
7. Cells provide structure but not function to living things.
8. New cells can only come from existing cells.
9. Some living parts of organisms are not made of cells
10.All cells are the same size and shape.
11.Cells are the smallest functional unit of a living thing.
12.Organisms grow when existing cells get larger
Revisit Cell Theory – Which 3 are true?
The Life of a CellThe Cell Cycle Occurs in 3 Stages
• Interphase – the longest phase– G1, S and G2
• Mitosis – the process of cell division– Prophase– Metaphase– Anaphase– Telophase
• Cytokinesis – forms 2 identical cells
Mitosis – the process of cell division
• Cell division is an important process because it is involved in growth, development, repair and reproduction
• Cells contain genetic information, DNA, that tells it what to do
• When a cell divides into two new cells, each cell gets a complete set of DNA from the parent cell.
• These new cells are created from a parent cell through the process of mitosis
Interphase is the longest phase of the cell cycle. The G1, S and G2 phases all occur during interphase. The process of Mitosis only takes up about 25% of the cells life.