What makes something alive? Describe the features common to all life?

What makes something alive?

•Describe the features common to all life?

What makes something alive?1. Reproduces

2. Grows

3. Develops

4. Uses Energy –food

5. Responds to environment

6. Adapts

7. Made of cells

8. Moves

Reproduction

• Produce next generation of offspring

Cells– Mitosis– Meiosis

Individuals– Asexual – one parent– Sexual – two parent

Growth

• Get bigger• Grow larger

Development

• All the changes that occur as a living thing grows

• Simple form to complex form

• Changes size and shape

• New structures

Use Energy

• Energy is the ability to do work

• Energy comes from food

• Cellular respiration is the process used to breakdown foods and release energy

Use Energy

• Producers make food– Plants, bacteria, some

protists

• Consumers eat or absorb food– Animals, bacteria,

protists, fungi

Respond to Stimuli

• Stimuli: Something external or internal that cause a response

• Cold: shiver• Hot: sweat• Pressure:

pleasure/pain• Sunlight: plant growth• Fear: adrenaline

Adaptations

• Traits that help an organism survive

• When the ecosystem changes over time, so do the traits that help the organism survive

• Help an organism get food, shelter, a mate

• Territory, swim, fly

Made of Cells

• Basic unit of all life• One celled organism• Bacteria, protists• Many celled organism• Fungi, plants, animals

Movement

• All life has some type of movement

• Animals move

• Plants move

• Fungi move

• Bacteria move

Plant Adaptations

• Thorns• Waxy coating (cuticle) on

the leaves provides water-proofing

• Cactus have stems that store water

Colors

• The pepper moth became darker during the industrial revolution

• a fine layer of coal dust covered tree trunks where the moth rested during the day

• the whitish color against the darker background allow birds to more readily find the moth

• The pepper moth survived

Morphology• Strawberries have

underground stems which readily break so that a new plant can result from just a portion of the parent plant

• Leaves of desert plants are often hairy (to reduce water loss) whereas those in the tropics are mostly smooth; l

• fruits in temperate regions tend to be hard (nuts, acorns) whereas those of the tropics are often fleshy (banana)

• Flowers tend to be large and solitary in tropical plants; smaller and more numerous in temperate regions