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Science 10 Biology
Section V.
The Role of Membranes
Section VI. Classification of Living
Things
The Role of Membranes
Pages 272-283
All cells have a cell membrane
and a cell.
The purpose of a membrane is as
follows…

The Role of Membranes
1. Regulates movement of matter in
and out of the cell.
[Although there are several other ways
such as pinocytosis ( cell drinking)
And phagocytosis (cell eating)]
2. Separates cell from its environment
–Serves as protection.
The Role of Membranes
Membranes
vary in size and shape. The true
structure of membranes has been difficult to study.
The
current model we use is called the
Mosaic Model. (see the diagram)

Work book pages 3-16 to 3-17
Fluid
Section VI
Classification of Living Things: The
Five Kingdoms.
Classification of Living Things:
The 5 Kingdoms
Living systems can be remarkably
different, yet remarkably similar at the
same time.

It is easy enough to see the differences
between living things. Each organism has
unique Structures, tissues, organs, and
systems that help it adapt to its
environment. Despite the differences, each
living organism has things in common with
other organisms. They must….

I
Classification of Living
Things: The 5 Kingdoms
1.
Absorb nutrients to grow.
2. Have a system to convert
energy to a useable form.
3. Be able to reproduce
(divide cells).
4. Be able to get rid of waste.
Classification of Living Things:
The 5 Kingdoms
To help us understand the diversity and
unity of living things, we have classified them
into 5 Kingdoms:

1. Prokaryotae
 2. Protista
 3. Fungi
 4. Plantae
 5. Animalia
Viruses are a class of their own because
they do not fit into the above categories

Prokaryotae (Monerans)
Primarily
Bacteria.
 Consumers, decomposers,
And producers
Need
Energy/Nutrients
to get rid of wastes
• Can synthesize
own proteins.
• Unicellular,
some chlorphyll,
with cell wall and
are prokaryotic.
• Found in
Yogurts, Cottage
Cheese, Sour
Creams


Eukaryotic with
many unicellular,
but some are
multicellular.
Brown, Red, Green
Algae with some
Chlorophyll and
cell walls.




Includes:
Euglenas
Paramecium's.
Live their lives as
single cells but
carries out all the
functions as a
multicultural
system does-very
complex!




Most are
multicellular.
No Chloroplasts.
Get energy by
decomposing
/ingesting.
Reproduce by
spores.



Have cell wall and
are Eukaryotic.
Eg. Mushrooms,
mold, athletes
foot.
First antibiotics
from penicillium.



Multicellular
Eukaryotes.
Chloroplast-with
grana (folded
structures that
capture sunlight
for
photosynthesis).
Also undergo
cellular
respiration.


Plants provide
food for the
biosphere, and
hold soil in place.
Also responsible
for building soil.
Eg. Vascular
plants, mosses,
ferns, etc.



Multicellular
Eukaryotes.
Have a cell
membrane with no
cell wall.
Organelles are in
membrane bound
material.


They are
consumers and are
mobile.
Contains
specialized cells.




No membranes
No organelles
Does not divide
like most cells.
Outer structure of
protein with
genetic material.

Borrows host cells
organelles then
destroys host to
release new
particles.