Transcript What do all living things have in common?

What do all living things
have in common?
Living things have several
characteristics that distinguish them
from non-living things.
1. Living things grow in size, reproduce and are
able to repair themselves.
 Repair worn
or injured
parts
 Grow in size
 Produce offspring
2. Living things require energy.
3 Living things respond to changes in their
environment.
Animals try to escape from
predators.
Plants grow in the direction
of moist soil…and the sun.
Responses do not always cause
motion.
Some responses occur within the living
thing and are not directly observable.
e.g. an animal’s metabolism may slow
down when an animal is cold hungry
or thirsty which affects the bodily
functions and not the motion.
4. Living things have a life span.
5. Living things produce waste.
Check your learning…
Characteristic of living things
Non-living things with similar characteristic
• Grow in size, reproduce, are able to
repair themselves
• Require energy
• Have a life span
• Responds to things in their environment
• Living things produce waste
• A car produces waste in the form of
fumes but is not alive
What two characteristic are described in the following statement?
“A human begins life as a single cell, whereas an adult is made up
of trillions of cells”
1.
2.
Introducing the amazing cell….
The basic structural and functional
unit of all living things!
Living or Non-living?
1. Check your learning….
2. http://www.saburchill.com/questions/lanlt001.html
3. E-Learning Ontario
Are you ready to take care of an Amoeba ?
ELO1395090
Introducing…
The first true cells!
You are very
welcome!!!!
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First were anaerobes (lived without oxygen)
About 3- 3.5 billion years ago
Became photosynthetic bacteria
Began producing oxygen which built up in Earth’s atmosphere
The Cell Theory
 Investigate the functions and
processes of plant and animal cells
 Investigate the basic structure and
function of plant and animal cells
The theory that states that all
living things consist of cells, that
the cell is the basic structural and
functional unit of life, and that all
cells come from pre-existing cells.
1. All living things are composed of one or
more cells.
2. The cell is the basic unit of life.
3. All cells come from pre-existing cells.
Does Size Matter?
Cells have a wide variety of sizes.
Smallest: Bacterial
Not more than 10μm ( 10 1/1000 of a mm)
Typical human cell:
About 100 μm
Largest cell: Nerve cell of large animals
About 10 m in length but very narrow
Bacterial cell
Human
Largest cells
1 cm in diameter
10 cm in diameter
10 000 m long
Compare the sizes of cells
http://www.cellsalive.com/howbig.htm
Common Components of Plant
and Animal Cells
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Organelles
Cytoplasm
Cell Membrane
Nucleus
Chromosomes
Vacuoles
Cell Movement
Plants are special because…..
You will find out when you complete the following chart comparing plant and
animal cells. (pg.104-107)
component
Definition
Animal
cell
Plant
cell
Structure
Location
Function
Organelle
Cytoplasm
Cell
membrane
Nucleus
chromosones
vacuoles
Cell wall
chloroplast
flagella
cilia
Assignment #1
1. Complete table comparing the plant and animal
components. (Page 107 #4) What do you notice?
2. Describe the main structural difference between
plant and animal cells. Explain why these differenc
are important for each type of cell.
3. Answer the key question “ What do all living thing
have in common?” Use words and diagrams.
Explore the parts of animal and
plant cells
http://www.cellsalive.com/cells/cell
_model.htm
Assignment #1
1. Complete table comparing the plant and animal components. (Page
107 #4) What do you notice?
2. Describe the main structural difference between plant and animal
cells. Explain why these differences are important for each type of cell.
3. Answer the key question “ What do all living things have in common?”
Use words and diagrams.
Compare the sizes of cells
http://www.cellsalive.com/howbig.htm
Introducing… the Microscope!
Scientist: __________________________________
Advances in Microscopy
(Page 111-112)
Light Microscope
Electron Microscope
Advances in Microscopy
Light Microscope
Electron Microscope