Characteristics of Living Things. Characteristics of ALL Living Things.
Cells – The Basic Unit of Life The Characteristics of Living Things §All living things have these...
-
Upload
alannah-jacobs -
Category
Documents
-
view
216 -
download
1
Transcript of Cells – The Basic Unit of Life The Characteristics of Living Things §All living things have these...
Cells – The Basic Unit of Life
The Characteristics ofLiving Things
All living things have these six characteristics.
Anything without one of these six characteristics is nonliving.
Living things are called organisms.
1. Made of CellsOrganisms are
made up of one or more cells.
A cell is the basic unit of structure and function in living things.
Cells = the of life.
2. Use and Need Energy
All organisms need and use energy to live.
Energy is the ability to do work.
Sunlight is the source of energy for most living things.
Plants use the energy in sunlight to make food, and animals get energy by eating plants or other animals that have eaten plants.
3. Adapted to Their Surroundings
Organisms are adapted, or suited, to their surroundings.
All organisms have features that help them survive in their surroundings.
For example: fish have gills
4. React to Changes
Organisms react to change in their surroundings.
Any reaction to change is called a response.
For example: A bright light may cause you to blink.
5. ReproduceOrganisms
produce more organisms of their own kind.
Reproduction allows organisms to continue living on the earth.
6. Grow and Develop
Living things change, or develop, during their lifetimes.
One way organisms change is by growing.
Living things may also change in appearance.
• For example: tadpoles and frogs
All organisms grow and develop.
SummaryBiologists use six characteristics to
classify something as a living thing.1. Made of Cells2. Use and Need Energy3. Adapted to Their Surroundings4. React to Changes5. Reproduce6. Grow and Develop
All living things display all of the above characteristics.
Hairy T-cell
Cell Theory
Three part theory about cells
1. All living things are made of cells.
Part 2 of the Theory
2. The cell is the basic structural and functional unit of life.
Part 3 of the Theory
3. All cells come from pre-existing cells.
yeast cells dividing
Who came up with this theory?
1. Schleiden (circa 1838)
All plants are made of cells!
Onion skin cells
2. Schwann
Who came up with this theory?All animals are made of cells!
Human red blood cells
Who came up with this theory?
3. Virchow All cells come
from pre-existing cells!