1. Characteristics of Living Things

2. All living things:
Sense and Respond to Change Reproduce Have DNA Use Energy Grow and Develop
Have Cells

3. Living Things Have Cells
Every living thing is composed of one or more cells.
A cell is the basic unit of life. It is a membrane-covered structure that contains all of the materials necessary for life.

4. Living Things Sense and Respond to Change
A change in an organism’s environment that affects the activity of the organism is called a stimulus.
Ex: darkness, sounds, tastes, heat, light

5. Organism’s must maintain a stable internal environment to survive.
The maintenance of a stable internal environment is called homeostasis.
Ex: sweating, shivering

6. Living Things Reproduce
Organisms make other organisms like themselves.
This is done one of two ways:
asexual reproduction sexual reproduction

7. In asexual reproduction, a single parent produces offspring that are identical to the parent.
Most single-celled organisms reproduce this way.
Ex: hydra

8. Most animals and plants reproduce in this way.
Sexual reproduction almost always requires two parents to produce offspring that will share characteristics of both parents.
Most animals and plants reproduce in this way.

9. Living Cells Have DNA
The cells of all living things contain DNA (deoxyribonucleic acid).
DNA provides instructions for making proteins.

10. The transmission of characteristics from one generation to the next is called heredity.
Ex: children looking like their parents

11. Living Things Use Energy
Organisms use energy to carry out the activities of life, like breaking down food.
An organism’s metabolism is the combined chemical processes that it performs.

12. Living Things Grow and Develop
All living things grow, develop, and change over time.
Growth is getting bigger Development is getting more complex.
Ex: kids become adults

13. Needs of Living Things
In order to carry out and support these processes, living things need food, water, living space, and stable internal conditions.

14. Facts about Cells…. All living things are made up of cells
Cells are the smallest units of all living things
Most cells are too small to see with the naked eye
Cells come in different shapes and sizes
There are two types of cells: Prokaryotic Cell and Eukaryotic Cell.

15. History behind cells…..
Robert Hooke discovered the first cells by looking through a microscope at a slice of cork.
Anton Von Leeuwenhoek was the first to observe living organisms under the newly invented microscope.
Theodore Schwann discovered that all animals have cells.
Mathias Schleiden discovered that plants have cells.
Scientist eventually came up with the cell theory…….

16. Cell Theory All living things are made up of cells
Cells are the basic units of structure and function in living things
Living cells come only from other living cells.
Cell theory Song