Characteristics of Living Things

Response to Stimuli (sensitive)

Pulling your hand away when you touch a hot stove is an example of _____________.

Made of Cells

This is the smallest unit of life and is the basic building block of all living things.

Requires Energy (Nutrition)

Organisms use this to grow, repair injuries, make more cells, cellular respiration etc.

Grows and Develops

When organisms increase in size and become more complex as they get older.

Reproduces

Important characteristic to keep a species from going extinct

Unicellular

Made of a single cell

Multicellular

Consisting of many cells

organism

a living thing

stimuli

something that causes a reaction

growth

the process of increasing in physical size.

develop

change in complexity as time passes

8 characteristics of living things

1. Movement

2. Respiration

3. Sensitive

4. Reproduce

5. Growth

6. Organized

7. Nutrition

8. Excrete

Bacteria

An example of a single-celled organism:_________________.

Lifespan

The length of time an organism is expected to live is called ___________.

carbon dioxide

Only plants need this for energy: ____________.

Oxygen

Plants must get rid of ____________ as a waste product

Cells

All living things are made of _____.

Respiration and Excretion

Exchange gases, uses water & eliminates wastes

Homeostasis

organisms maintain a relatively stable internal environment