characteristics of life eq: how can you tell if something is alive?

Characteristics of Life

EQ: How can you tell if something is alive?

What is Biology?

The study of living things (organisms)

The study of interactions of living things

“bio”-life

“ology”-study of

8 Characteristics

of LIFE1. Living Things are

made up of Cells. a.) CELL: Collection of

living material enclosed within a barrier

b.) cells are basic unit of life

c.) Unicellular: made up of one cell

d.) Multicellular: made up of many cells

Unicellular

Multicellular

2. Living Things Reproduce: a.) produce offspring which resemble parents

b.) asexual reproduction: has only one parent

c.) sexual reproduction: requires two parents

Asexual

Sexual

3. Living Things are based on a genetic code.

a.) inheritance of traits is carried on DNA

4. Living things Grow and Develop

a.) GROWTH: increase in size & shape

b.) DEVELOPMENT: mature over time

c.) living things have a lifespanGrowth

Development

5. Living Things Use & Need Energy a.) energy comes from food, used to maintain body b.) AUTOTROPH: produce own food c.) HETEROTROPH: must consume food d.) DECOMPOSER: breaks down dead material for food

6. Living things respond to their surroundings a.) they react to a stimulus

b.) an action causes a reaction

c. ) reaction is called a response

d.) this involves one individual

7. Living things maintain a stable internal environment

a.) HOMEOSTASIS: internal balance

b.) examples: sweating, panting, shivering, etc.

8. Living things Evolve a.) adapt to long-range changes in environment

b.) change to better survive in environment

c.) these changes take place over a long period of time & involve the entire species