Upload
ze-lin-kow
View
219
Download
0
Embed Size (px)
Citation preview
8/18/2019 BIOLOGY FORM 4 BAB 1 Cell Structure (2)
1/23
Cell
Structureand Function
8/18/2019 BIOLOGY FORM 4 BAB 1 Cell Structure (2)
2/23
Animal cell
Plant cell
8/18/2019 BIOLOGY FORM 4 BAB 1 Cell Structure (2)
3/23
Cell Parts and
Structures
• With electron microscopes, scientists are able to seethe cellular components of a cell in greater detail.
• The cytoplasm contains structures called organelles.
• Organelles perform specific function which enable the
cell to function as a unit of life.
8/18/2019 BIOLOGY FORM 4 BAB 1 Cell Structure (2)
4/23
A n i m a l c e l l
8/18/2019 BIOLOGY FORM 4 BAB 1 Cell Structure (2)
5/23
8/18/2019 BIOLOGY FORM 4 BAB 1 Cell Structure (2)
6/23
P
l a n t c e l l
8/18/2019 BIOLOGY FORM 4 BAB 1 Cell Structure (2)
7/23
8/18/2019 BIOLOGY FORM 4 BAB 1 Cell Structure (2)
8/23
• Controls cellular
activities.
• Nucleus membrane
controls inflow and
outflow of material to
and from nucleus
• Nucleolus acts as site
of ribosome
construction.• Chromosome carries
hereditary information.
8/18/2019 BIOLOGY FORM 4 BAB 1 Cell Structure (2)
9/23
• Acts as a mediumwhere biochemical
reactions and most
living processes
occur within the cell.
• Proides the
organelles with
substances obtainedfrom e!ternal
enironment.
8/18/2019 BIOLOGY FORM 4 BAB 1 Cell Structure (2)
10/23
• "eparates the content
of the cell from its
e!ternal enironment.
• Regulates the
movement of
substances enteringand leaving the cell.
• Allows the e!change
of nutrients,
respiratory gases and
wastes products
between the cell and
its enironment.
8/18/2019 BIOLOGY FORM 4 BAB 1 Cell Structure (2)
11/23
• Chlorophyll captures theenergy of sunlight and
conerts light energy into
chemical energy duringphotosynthesis.
• The green pigment of
chlorophyll gies plantstheir colour.
8/18/2019 BIOLOGY FORM 4 BAB 1 Cell Structure (2)
12/23
• "tores chemicals
such as organicacids, sugar, amino
acids, mineral salts,
oxygen, carbondioxide and so on.
• #egulates water
balance in plantcells.
8/18/2019 BIOLOGY FORM 4 BAB 1 Cell Structure (2)
13/23
8/18/2019 BIOLOGY FORM 4 BAB 1 Cell Structure (2)
14/23
• $aintains the shape of plant cells.
• Proides mechanical strength and support toplant cells.
• Protects plants cells from rupturing due to the
moement of e!cess water into the cells.
8/18/2019 BIOLOGY FORM 4 BAB 1 Cell Structure (2)
15/23
• %orms a networ& of
transportation within
the cell.
Rough endoplasmic reticulum
'has ribosomes attached to itssurface(
Transports protein which is
synthesi)ed in ribosomes.
Smooth endoplasmic reticulum
'does not hae ribosome attach toits surface(
Transports and
synthesi)ed fat and
glyserol
8/18/2019 BIOLOGY FORM 4 BAB 1 Cell Structure (2)
16/23
8/18/2019 BIOLOGY FORM 4 BAB 1 Cell Structure (2)
17/23
• "ite of proteins synthesis.
• They are either bound to the
endoplasmic reticulum or lie free in
the cytoplasm.
8/18/2019 BIOLOGY FORM 4 BAB 1 Cell Structure (2)
18/23
• The sites of cellular
respiration.• Principle site of
energy production.
• *nergy generated orreleased in the form
of ATP (adenosine
triphosphate).
8/18/2019 BIOLOGY FORM 4 BAB 1 Cell Structure (2)
19/23
8/18/2019 BIOLOGY FORM 4 BAB 1 Cell Structure (2)
20/23
• "tac&s of flattened sacs
• %unctions+
• processes *# products into final form
• sort and direct finished products to final destinations
'intracellular or e!tracellular( esicles - small
membrane coated chambers used to transport materials
8/18/2019 BIOLOGY FORM 4 BAB 1 Cell Structure (2)
21/23
8/18/2019 BIOLOGY FORM 4 BAB 1 Cell Structure (2)
22/23
• "ac-li&e organelles
which contain
en)ymes
• rea& down large
molecules cell/s
0digestie system1
• 2estroy bacteria, old
organelles, etc.
3ysosomes
8/18/2019 BIOLOGY FORM 4 BAB 1 Cell Structure (2)
23/23