what is science?omarascience.weebly.com/uploads/2/7/7/4/2774881/... · 2018. 10. 9. · scientists:...
TRANSCRIPT
WHAT IS SCIENCE?Chapter 1
Key concept:
What is the goal of science?
SCIENCE:• Is an ________________
• Uses_______ to ______ events
• ______and organizes ______
• Deals only with __________
• Looks for _______ and
__________
organized method
Image from: http://www.erschools.org/Teachers/henderson/webquest/images/scientist.jpg
evidence explain
Collects information
natural world
patterns connections
Scientists:
_______________ that can be
_______ by ___________________
http://www.darvill.clara.net/enforcemot/graphics/newton.gif
propose explanations
TESTED
examining evidence
Science is ______________but
a ___________________Because of new tools, techniques,
& discoveries, our understanding of
science is __________________.
http://atmos.pknu.ac.kr/~swimm/wall/1024/EARTH.JPGhttp://www.npr.org/programs/fa/features/2005/04/flat_200.jpg
not “just facts”
“WAY OF KNOWING”
ALWAYS CHANGING
Our understanding of science is
_________ in _______ intelligent
________ about a wide variety
of _______ that affect our lives.
Renewable fuelsAIDS Global warming
Stem Cell Research
Bird flu
Alternative energy
Cancer Endangered species
Cloning Nuclear power Pollution
essential
decisions
issues
making
BIOLOGY
=__________________
= ________________Study of living things
BacteriaImage from: http://analyzer.depaul.edu/astrobiology/kingdoms.jpg
The science of “LIFE”
1.Made of _________
2. _____________
3. Based on a _____________________
4. _______ and ____________
5.______ & ___ ________ & _______
6. ________ to their ____________
7. ______________________________
8. As a group, __________________
Characteristics of ALL LIVING THINGS
cells
Reproduce
universal genetic code
Maintain a stable internal environment
Grow develop
Obtain use materials energy
Respond environment
change over time
ALL LIVING THINGS ARE: Made of cells
The _____ is the
______________.basic unit of life
http://sps.k12.ar.us/massengale/study_guides_bi.htm
CELL
ALL LIVING THINGS ARE: Made of cells
____________organisms are _____________made of only 1 cell
Image from: http://www.agen.ufl.edu/~chyn/age2062/lect/lect_06/bacsiz.GIF
(Ex: _________)
UNICELLULAR
bacteria
ALL LIVING THINGS ARE: Made of cells
_________________ organisms_______ as _________ but as adults are
_________________________
Ex: (___________
__________ )
MADE OF MANY CELLS
Images from:
http://www.angelbabygifts.com/
http://www.inclusive.co.uk/downloads/images/pics2/tree.gif
MULTICELLULARBEGIN ONE CELL
a human a tree
ALL LIVING THINGSReproduce
________________________
_____________the
___________________
from _____________
________________
Seen in animals and plants
SEXUAL REPRODUCTION
Family image from: http://babyhearing.org/Parenet2Parent/index.asp
combines
sperm + egg = baby
genetic material
2 parents
_________________________makes a new organismusing the ________________from _________________
Seen in bacteria, plants, and some animals
ASEXUAL REPRODUCTION
Planaria animation: http://www.t3.rim.or.jp/~hylas/planaria/title.htm
ALL LIVING THINGSReproduce
genetic material
ONLY 1 PARENT
All living things share a universal genetic code
Hereditary material = DNA______________________
________________ with instructions for one _________is called a ________.
DEOXYRIBONUCLEIC ACID
GENE
Image from: http://sbchem.sunysb.edu/msl/dna.gif
Segment of DNA
PROTEIN
_____________ organisms, like a bacterium, grow by ________________.
Image by Riedell
ALL LIVING THINGSGrow & develop
INCREASING in SIZE
SINGLE CELLED
Multicellular organisms grow bigger by __________________ AND _____________________.
increasing cell size
increasing cell number
Image from: http://www.bcps.org/offices/lis/models/life/images/grow.JPG
Image by Riedell
ALL LIVING THINGSGrow & develop
MULTICELLULAR ORGANISM don’t just contain MANY CELLS… but many _______________ of cells with _____________________
Image from: http://www.isscr.org/images/ES-cell-Fig-2.jpg
DIFFERENT KINDS
DIFFERENT FUNCTIONS
The ________________ EMBRYONIC STEM CELLS into different looking ADULT cells doing different jobs =
__________________________DIFFERENTIATION
Image from: http://www.ncu.edu.tw/~ls/graph/faculty_pictures/whole_time/SLC/SLC_lab-1.jpg
PROCESS OF CHANGING
_________________________
what makes them ___________ is_______________ are _______________________
See end of show for image sources
All cells have the SAME DNA...
WHICH GENESTURNED ON or OFF
different
It’s like having a whole library full of books, but reading only the books that are important to you.
http://www.adc.state.az.us/programs/offlibsvs.html
http://school.discovery.com/clipart/clip/report2.html
ALL LIVING THINGSTake in Materials & Use Energy
To________________,organisms _______ a constant supply of
____________________ &
____________
This sheep uses the MOLECULES and ENERGYin the food it eats tomake “more sheep”
grow and developneed
BUILDING MATERIALS
ENERGY!
http://ag.ansc.purdue.edu/sheep/ansc442/Semprojs/2003/spiderlamb/eatsheep.gif
ALL LIVING THINGSTake in Materials & Use Energy
___________ use energy from sunlight or chemicals to ________________
Ex: _____________ use ____________to turn _________ into _________
AUTOTROPHS
http://www.inclusive.co.uk/downloads/images/pics2/tree.gif
Image from: http://vilenski.org/science/safari/cellstructure/chloroplasts.html
make their own food
GREEN PLANTSphotosynthesis
glucose
ALL LIVING THINGSTake in Materials & Use Energy
______________ get their energy by___________________
Ex: ________ (including you) and _________________
HETEROTROPHS
Image from: http://www.epa.gov/region5/superfund/ecology/images/fishcartoon.gif
consuming other organisms
Animalsmost bacteria
The combination of all the _________________ through which an organism ________ or ___________ materials as it carries out its life processes
= ___________________metabolism
chemical reactionsbuilds up
breaks down
ALL LIVING THINGSRespond to their environment
A signal to which an organism responds= ___________________STIMULUS
Image from: http://www.travel-net.com/~andrews/images/animations/traffic.gif
ALL LIVING THINGSRespond to their environment
A stimulus can be_________________
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.
EXTERNAL
Image from: http://www.ccs.k12.in.us/chsBS/kons/kons/images/stimresp.jpg
http://www.nofretete-page.de/gemischtNeu/TN_plant_grow_w.JPG
ALL LIVING THINGSRespond to their environment
A stimulus can be____________
Ex: When the glucose level in your bloodstream becomes low, your body responds by making you feel hungry.
http://www.israellycool.com/eat%20guy%20AFP.jpg
http://www.estrellamountain.edu/faculty/farabee/biobk/BioBookCHEM2.html
INTERNAL
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
HOMEOSTASIS involvesinternal __________ mechanisms
If body temp drops too low,“shivering” produces heat to warm you up.
http://www.dreamstime.com/thumb_4/1099235658Q3A4x8.jpg http://www.clipartheaven.com/clipart/seasons_&_weather/overheating_2.gif
If temp is too hot, “sweating” cools you down.
FEEDBACK
HOMEOSTASIS
Drinking a BIG GULP
increases the amount
of water in your body
http://pluck.typepad.com/photos/uncategorized/restroom_blog.gif
Your next stop gets rid of the excess water.(OSMOREGULATION)
http://www.me-go.net/rtw/images/biggulp.jpg
ALL LIVING THINGSas a group, change over time
= ______________
Allows _______ of ________ in a ___________
EVOLUTION
survivalspecies
changing world
http://cache.eb.com/eb/image?id=63386&rendTypeId=4
Muscle:http://chemistry.uca.edu/faculty/isom/4320_pdf/multimedia/web_ex/web_ex1/skeletalmuscle1.jpg
RBC: http://www.astrographics.com/GalleryPrints/Display/GP2120.jpg
Nerve: http://www.alongnaturestrail.com/the_nervous_system.html
Bone: http://ssm.hkcampus.net/~ssm-is/3.%20human_cell/bone_cell.jpg
Cheek: http://faculty.stcc.edu/nash/cheek1.jpg
SOURCES