History of the Cell

advertisement
ThinkGroup-Share
Predict, Observe, Explain
P.O.E Analysis
3 Shutter-Door FOLDABLE
P O E
Predict, Observe, Explain
P.O.E Analysis
GATE
SON GOKOU
Predict, Observe, Explain
V - MALL
BRAIN
POOL
NETWORKING
PACKAGING
SOY MILK
OPERATION
History of the Cell
Anton Van Leeuwenhoek
Father of Microscope
He is a Dutch
biologist who
perfected a simple
microscope.
Robert Hooke
An English scientist who made
improvements in the compound microscope.
Using an ordinary penknife he sliced a very
thin piece of cork and examined it.
In 1665, he published a report entitled
Micrographia.
I could exceedingly plainly perceive it to
be all perforated and porous … these pores, or
cells, were not very deep, but consisted of a
great many little boxes.
Matthias Jacob Schleiden (1804-1881)
He was a German
botanist.
He concluded that all
plants were composed
of cells.
Theodor Schwann (1810-1882)
He was a German zoologist.
He concluded that all
animals were composed of
cells.
Rudolf Virchow
A German physician
and biologist.
Omnis cellula e cellula
(every cell comes from
another cell)
The works of Schleiden, Schwann and
Virchow established the Cell Theory:
All organisms are made up of one or
more cells.
A cell is the basic unit of an organism.
A cell arises from pre-existing cells.
CELL MORPHOLOGY
Plant Cell
Animal Cell
Cell Membrane
The cell membrane is also called the plasma
membrane or the plasmalemma.
Its differentially permeable property enables it to
regulate the flow of materials into and out of the
cell through diffusion or active transport.
Cell Wall
The cell wall is a rigid outer
structure protecting cells of plants,
fungi, and bacteria and plant-like
protest cells.
Nucleus
The nucleus is the center of hereditary
processes in the cell.
This is the site where nucleic acids
called DNA and RNA are synthesized.
Ribosomes
Ribosomes are the most numerous
cell organelles that are responsible
for protein synthesis.
Endoplasmic Reticulum
The endoplasmic reticulum consists of a series of
membrane-lined channels which facilitate transport
within the cell. The membrane also serves as a site of
chemical
reactions.
Endoplasmic
reticulum
with
ribosomes close to it are rough endoplasmic reticulum
(RER). Endoplasmic reticulum without ribosomes are
called smooth endoplasmic reticulum (SER).
Golgi Complex
The golgi complex or dictyosome is a cluster
of flattened, parallel sacs and appears to be
involved in the transport, packaging, and
secretion of materials, particularly lipids
and proteins.
Mitochondria
The mitochondria are rounded, or cigarshaped, or elongated organelles which are
specialized for energy (ATP) production
through
a
respiration.
process
called
cellular
Plastids
Food and pigments ae stored in plant cell
organelles called plastids. A plastid that
contains the green pigments chlorophyll is
called
the
chloroplast.
This
is
where
photosynthesis takes place in the presence of
light.
Vacuoles
Vacuoles are found in plant and some animal cells.
The content of the vacuole is often called the cell
sap which contains ions, waste products, molecules
of sugar, proteins, and other organic materials in
colloidal suspension in the water form.
Lysosomes
Lysosomes digest disease-causing
bacteria captured by white blood
cells and worn-out broken part of
cells.
Microtubules and Microfilaments
The cytoskeleton or the framework of the
cell is due to the long, slender protein tubes
called microtubules and the fine protein
threads called microfilaments.
Centriole
Animal cells contain centrioles which consist of two
sets of microtubular units placed at right angles to
each
other.
they
lust
just
above
the
nuclear
membrane. Centrioles play a role in the assembly of
the spindle apparatus, which is an essential feature of
both mitosis and meiosis, the cell division process.
Predict, Observe, Explain
P.O.E Analysis
GATE
SON GOKOU
CELL MEMBRANE
MITOCHONDRIA
Predict, Observe, Explain
V - MALL
LYSOSOME
VACUOLE
BRAIN
POOL
NUCLEUS
CYTOPLASM
NETWORKING
PACKAGING
ENDOPLASMIC
RETICULUM
GOLGI APPARATUS
SOY MILK
OPERATION
RIBOSOME
CENTRIOLE
Comparison of Animal and Plant Cell
Feature
Animals
Plants
10-20 um
30-50 um
Cell membrane
Present
Present
Cell wall
Absent
Present
Nucleus
Present
Present
Ribosome
Present
Present
Endoplasmic reticulum
Present
Present
Golgi complex
Present
Present
Mitochondria
Present
Present
Chloroplast
Absent
Present
Small or absent
Usually a single large one
per cell
Often present
Rare
Present
Present
Average size (diameter)
Vacuoles
Lysosomes
Microtubules
Download
Related flashcards
Create Flashcards