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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!?!?