Is It Alive??

Origins QQ#3

QQ#1 What did your group decide

for the requirements to

determine if something is

alive?

Origins QQ#3

Requirements For Life

1. Living Things Are Made Up of

Cell(s) that contain DNA

2. Living Things Reproduce

3. Living Things Grow and

Develop

4. Living Things Obtain and Use

Energy

5. Living Things Respond to The

External Environment and

Maintain their internal

environment

QQ#2 choose two of

the above

statements and

predict what

they might

mean

Origins QQ#3

1. Living Things Are Made Up of Cell(s) that contain

DNA

• Unicellu lar organisms are made of 1 cell

• Multicellu lar organisms are made of more than 1 cell

• Cells contain genetic information in the form of DNA

Paramecium Dog

Requirements For Life

Origins QQ#3

DNA

2. Living Things Reproduce

• Sexual Reproduction: The mixing of genetic material

from 2 members of the same species

• Asexual Reproduction: Offspring are genetically

identical to the parent. No mixing of genetic material.

Requirements for Life

Sexual Reproduction Asexual Reproduction

Is it Alive!?!?

QQ#3 a. Compare AND contrast sexual vs.

asexual reproduction.

b. Predict why is reproduction important

in the bigger picture of evolution

Is it Alive!?!?

3. Living Things Grow and Develop

• New cells can be created and d ifferentiate/ specialize

to perform certain functions for the organism as time

passes

• As development occurs, organisms age until

inevitable death occurs

Requirements For Life

Blue Oak Acorn Blue Oak Tree Sprouting Blue Oak Tree

Is it Alive!?!?

QQ#4 In what ways

would metabolism

be different for a

human and for a

plant?

Is it Alive!?!?

4. Living Things Obtain and

Use Energy

• Energy is obtained and

used to grow, develop

and reproduce

• Metabolism: The total

sum of all chemical

reactions in the body

Anabolism:

Synthesizing

substances to store

energy

Catabolism: Breaking

down substances to

release energy

Requirements For Life

Is it Alive!?!?

Requirements For Life

5. Living Things:

-Respond to The External Environment

Living things respond to stimuli to improve their

chances for survival

-Maintain their internal environment.

Homeostasis: the ability to maintain constant or

stable conditions that are necessary for life

Sweat to release heat

Sensations of thirst and hunger

Is it Alive!?!?

QQ#5 Thinking about the example of how

human’s sweating explains homeostasis,

how does this apply to the sensation of

thirst and hunger?

Is it Alive!?!?

Specimen #1: Pinto Bean

Is It Alive?

Is it Alive!?!?

Specimen #2: Fire

Is It Alive?

Is it Alive!?!?

Specimen #3: Yeast

Is It Alive?

Is it Alive!?!?

Specimen #4: Virus

Is It Alive?

Is it Alive!?!?