the cell: the basic unit of life
Post on 24-Feb-2016
33 Views
Preview:
DESCRIPTION
TRANSCRIPT
The Cell: The BasicUnit of Life
OrganismAnything that is
living
Dogs , cats birds,Insects, moss, trees, bacteria
Needs energy, materials from the environment, &
living space.Grows, develops, responds to environment, reproduces
and has cells.
Rocks, water, dirt
4 Characteristics of
Living Things
Grows and Develops Reproduces
OrganizationResponds to the
Environment
Needs of Living Things1. Energy
2. Materials
3. Living Space
Almost all of this energy comes form the sun.
Animals must eat other animals or plantlife for energy.
Food gives animals the energy to grow and reproduce.
They need living space for protection from predators
If any of these three thing were missing…
…the organism will die.
Multi-cellular/UnicellularXXXXXXX
XXXXXDefinition Example
Unicellular
Multi-celluar
They consist of ONE cell only.
They are made of many
ce l ls .
Bacteria & pondorganisms
Frogs & the water lily is only
scratching the Surface.
Cells were far too smallto be seen prior to the invention of themicroscope.
Robert Hooke gavethe cell its namewhile using the microscope. He was looking at cork under A microscope
He was one of the first to describe the cell. He thought they looked like miniature animals callingthem “animalcules”.
1. Every living is made of one or more cells.
2. Cells carry out the functions neededto support life.
3. Cells come from only other living things.
It is a widely accepted explanation of things observed in nature.
He was a French scientist who showed the Practical use of the cell theory.
HOW?He observed (through a microscope) that harmful bacteria was growing in milk causing it to spoil. He created a process (Pasteurization) that killed off thisbacteria making milk safe to drink.
Bacteria grew from non-living things.
1. Two flasks of broth-One is sealed, the other seal is broken.
2. Let them sit for several days.
3. Sealed Flask is unchanged Unsealed flask becomes cloudy because of bacteria growth.
4. Conclusion- The broth in the unsealed Container clouded because bacteria from the Surroundings was able to get into the broth and grow.
Boys vs Girls
A. BoysB. Girls
BoysGirls
42%
58%
Which pair is NOT a characteristic of all living things?
11%
0%
74%
16% 1. Growing and response to the environment.
2. reproducing and DNA3. Growing and Organized4. Reproducing and response to the
environment
Team ScoresPoints Team Points Team75 Girls72.73 Boys
Which is an example of a unicellular organism?
84%
5%
5%
5% 1. Virus2. Water lily3. Fly4. Bacteria
Team ScoresPoints Team Points Team162.5 Girls154.55 Boys
Who named the cell?
0%
79%
21%
0% 1. Pasteur2. Van Leeuwenhoek3. Hooke4. Watson
Team ScoresPoints Team Points Team250 Girls227.27 Boys
Where does most of the energy needed by organisms come from?
0%
5%
89%
5% 1. Plants2. The Sun3. Plants and Animals4. Animals
Team ScoresPoints Team Points Team350 Girls309.09 Boys
Where do animals get their energy?
11%
58%
5%
26% 1. Plants2. Other animals3. Plants and animals4. water
Team ScoresPoints Team Points Team400 Girls372.73 Boys
Spontaneous generation is…
32%
47%
16%
5%1. Life created from other living
things.2. Non-living things creating other
non-living things.3. Non-living things creating living
things.4. Living things creating non-living
things.
Team ScoresPoints Team Points Team462.5 Girls409.09 Boys
A scientific _____ is widely accepted explanation of things
observed in nature.
0%
0%
95%
5% 1. Law2. Theory3. Hypothesis4. Educated guess
Team ScoresPoints Team Points Team562.5 Girls500 Boys
Who proved spontaneous generation as untrue?
17%
17%
8%
58% 1. Pasteur2. Hooke3. Van Leeuwenhoek4. Crick
Team ScoresPoints Team Points Team622.5 Girls557.14 Boys
Team MVPPoints Team Participant800 Boys Arnold, Austin Jarred700 Girls Markawicz Weaver, Na...
top related