1. WHAT IS SCIENCE?
Chapter 1
Key concept:
What is the goal of science?

2. SCIENCE: Is an ________________ Uses_______ to ______ events
______and organizes ______
Deals only with __________
Looks for _______ and
__________
organized method
evidence explain
Collects information
natural world
patterns
connections
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3. _______________ that can be _______ by ___________________
Scientists:
_______________ that can be
_______ by ___________________
propose explanations
TESTED
examining evidence

4. Science is ______________but a ___________________
Because of new tools, techniques,
& discoveries, our understanding of
science is __________________.
not “just facts”
“WAY OF KNOWING”
ALWAYS CHANGING

5. Our understanding of science is _________ in _______ intelligent
AIDS
Renewable fuels
Global warming
Stem Cell Research
Alternative energy
Endangered species
Bird flu
Cancer
Pollution
Cloning
Nuclear power
Our understanding of science is
_________ in _______ intelligent
________ about a wide variety
of _______ that affect our lives.
essential
making
decisions
issues

6. BIOLOGY =__________________ = ________________ The science of “LIFE”
Study of living things
Bacteria
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7. Characteristics of ALL LIVING THINGS
Made of _________
_____________
Based on a _____________________
_______ and ____________
______ & ___ ________ & _______
________ to their ____________
______________________________
As a group, __________________
cells
Reproduce
universal genetic code
Grow develop
Obtain use materials energy
Respond environment
Maintain a stable internal environment
change over time

8. ALL LIVING THINGS ARE: Made of cells
The _____ is the
______________.
basic unit of life

9. ALL LIVING THINGS ARE: Made of cells
UNICELLULAR
____________organisms are _____________
made of only 1 cell
bacteria
(Ex: _________)
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10. ALL LIVING THINGS ARE: Made of cells
_________________ organisms _______ as _________ but as adults are
_________________________
Ex: (___________
__________ )
MULTICELLULAR
BEGIN
ONE CELL
MADE OF MANY CELLS
a human
a tree
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11. ALL LIVING THINGS Reproduce
SEXUAL REPRODUCTION
________________________
_____________the
___________________
from _____________
________________
Seen in animals and plants
combines
genetic material
2 parents
sperm + egg = baby
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12. ALL LIVING THINGS Reproduce
ASEXUAL REPRODUCTION
_________________________
makes a new organism
using the
________________
from
_________________
Seen in bacteria, plants, and some animals
genetic material
ONLY 1 PARENT
Planaria animation:

13. All living things share a universal genetic code
Hereditary material = DNA
______________________
DEOXYRIBONUCLEIC ACID
Segment of DNA
________________ with instructions for one _________
is called a ________.
PROTEIN
GENE
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14. ALL LIVING THINGS Grow & develop
Image by Riedell
_____________ organisms, like a bacterium, grow by ________________.
SINGLE CELLED
INCREASING in SIZE

15. ALL LIVING THINGS Grow & develop
Image by Riedell
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Multicellular organisms grow bigger by __________________
AND _____________________.
increasing cell size
increasing cell number

16. MULTICELLULAR ORGANISM don’t just contain MANY CELLS… but many _______________ of cells with _____________________
DIFFERENT KINDS
DIFFERENT FUNCTIONS
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17. PROCESS OF CHANGING
The ________________ EMBRYONIC STEM CELLS into different looking ADULT cells doing different jobs =
__________________________
DIFFERENTIATION
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18. All cells have the SAME DNA...
_________________________
what makes them ___________ is
_______________ are _______________________
different
WHICH GENES
TURNED ON or OFF
See end of show for image sources

19. It’s like having a whole library full of books, but reading only the books that are important to you.

20. ALL LIVING THINGS Take in Materials & Use Energy
grow and develop
To________________,organisms _______ a constant supply of
____________________ &
____________
need
BUILDING MATERIALS
ENERGY!
This sheep uses the
MOLECULES and ENERGY
in the food it eats to
make “more sheep”

21. ALL LIVING THINGS Take in Materials & Use Energy
___________ use energy from sunlight or chemicals to ________________
AUTOTROPHS
make their own food
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GREEN PLANTS
Ex: _____________ use ____________to turn
_________ into _________
photosynthesis
glucose
sunlight

22. ALL LIVING THINGS Take in Materials & Use Energy
______________
get their energy by
___________________
HETEROTROPHS
consuming other organisms
Animals
Ex: ________ (including you) and _________________
most bacteria
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23. Vocab word chemical reactions metabolism
the combination of all the _________________ through which an organism ________ or ___________ materials as it carries out its life processes
= ___________________
chemical reactions
builds up
breaks down
metabolism

24. ALL LIVING THINGS Respond to their environment
A signal to which an organism responds
= ___________________
STIMULUS
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25. ALL LIVING THINGS Respond to their environment
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A stimulus can be
_________________
EXTERNAL
Ex: When there is enough water
and ground is warm enough,
seed germinates. Roots respond to
gravity & grow downward. Leaves respond to sunlight & grow up.

26. ALL LIVING THINGS Respond to their environment
A stimulus can be
____________
INTERNAL
Ex: When the glucose level in your bloodstream becomes low, your body responds by making you feel hungry.

27. VOCAB WORD
A cell works to keep conditions inside the cell constant = ______________________
IF temperature, water content, nutrients, acidity change too much
. . . the cell will die.
HOMEOSTASIS

28. HOMEOSTASIS involves internal __________ mechanisms FEEDBACK
If body temp drops too low,
“shivering” produces
heat to warm you up.
If temp is too hot, “sweating” cools you down.

29. HOMEOSTASIS Drinking a BIG GULP increases the amount
of water in your body
Your next stop gets rid of the excess water.
(OSMOREGULATION)

30. ALL LIVING THINGS as a group, change over time
EVOLUTION
= ______________
Allows _______ of ________ in a ___________
survival
species
changing world

31. SOURCES
Muscle: RBC: Nerve:
Bone:
Cheek: