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Transcript
Bell Work 8/18/09
1.
Why do you think the invention of the
microscope was important?
If you haven’t finished your reading from
yesterday p.9-15, please continue
reading. Remember you need to list 3
things you learned from the reading in
the notes section of your journal.
Characteristics of Life
1.
2.
3.
4.
Organization
The ability to develop and grow
The ability to respond to the
environment
The ability to reproduce
The Cell



All living things are made of cells.
The cell is the smallest unit of a living
thing.
The cell is the basic unit of function in an
organism.
What activities that plants and animals do
are carried out by cells?
The Cell Theory
1.
2.
3.
Every living thing is made of one or more
cells.
Cells carry out the functions needed to
support life.
Cells come only from other living cells.
Peach Lab




P. 15 Louis Pasteur’s experiment
Bacteria and Spontaneous Generation
Explain peach lab
Explain Lab Write Up procedure
Bell Work 8/19/09



Please have a seat and get out your
homework, I will be by to check it.
Fill out the top of the peach lab sheet with
your name and hour.
Please sit quietly until class starts.
Bell Work
Without touching the peaches, make
observations of the peach in the bag and
the peach exposed to air.
Vocab 1.2

Cell membrane (p.20) – a protective
covering enclosing an entire cell.


A layer that controls what enters or leaves the
cell.
Cytoplasm (p.20) – A thick, gelatin-like
material contained within the cell
membrane.

Most of the work of the cell is carried out
here.




Eukaryotic cell (p.20) – a cell in which the
genetic material is enclosed within a nucleus,
surrounded by its own membrane. (most
multicellular organisms)
Nucleus (p.20) – The structure in a eukaryotic
cell that contains the genetic material a cell
needs to reproduce and function.
Organelle (p.20) – A structure in a cell that is
enclosed by a membrane and that performs a
particular function.
Prokaryotic cell (p.20) – A cell without a
nucleus and without organelles. Genetic
material is in the cytoplasm. (most unicellular
organisms)



Cell wall (p.21) – Only plant cells have
these. A tough outer covering that lies
outside the cell membrane.
Chloroplast (p.23) – An organelle in a
plant cell that contains chlorophyll, a
chemical that uses the energy from
sunlight to make sugar.
Mitochondria (p.23) – Organelles that
release energy by using oxygen to break
down sugars. Found in plant and animal
eukaryotic cells.