Uploaded by Janae Taylor

Organelles and their Functions

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Janae Taylor
Function
Origin
Organelle Name
Organelle Function and Origin
Plant - Animal - Both
Lysosome
★ Lysosomes destroy proteins
Both
and remove dead cells.
★ Lysosomes are ​believed ​to be
formed by the joint activity of
the endoplasmic reticulum,
endosomes and the golgi
complex. The precursors are
synthesized at the Rough ER
then the Golgi complex
changes them into enzymes.
Vesicles in the Golgi
complex are joined by
endosomes to form
lysosomes.
Centriole
★ Centrioles organize
microtubules that work as the
cell's skeletal system. They
help determine the locations
of the nucleus and other
organelles inside the cell.
Centrosome
★ Centrosomes work to direct
Animal
the movements of
microtubules a​nd other
cytoskeletal compositions and
proteins, eventually allowing
large modifications to the
shapes of animal cell
membranes.
★ Centrosomes are believed to
have evolved only in the
metazoan (animal) family of
eukaryotic cells.
Peroxisome
★ Peroxisomes destroy lipids by Both
breaking down long chains of
fatty acids.
★ The presence of proteins
common to many species has
been used to suggest an
endosymbiotic origin. This
means that peroxisomes
evolved from bacteria that
invaded larger cells as
parasites, and slowly evolved
Both
a symbiotic link.
Golgi Appartus
★ The golgi apparatus modifies
and packages proteins in
vesicles for export. ​Golgi
bodies also syn​thesize certain
polysaccharides and
glycolipids.
★ Golgi bodies originated fron
the endoplasmic recticulum.
The Golgi apparatus receives
materials from the cytosol
and endoplasmic reticulum in
the form of transitional
vesicles. The vesicles move
to the forming face of the
Golgi bodies and fuses there
with existing cisternae and
support in the maturity of the
organelle. (that’s all I could
find)
Both
Secretory Vesicles
★ Secretory vesicles store
molecules and proteins from
the endoplasmic reticulum
and golgi apparatu​s​ until the
cell is ready to release them.
★ Secretory vesicles grow from
the Trans Golgi network and
they release their contents to
the cell exterior in response
eo extracellular signals. The
secreted podut can be either a
small molecule or a protein.
Animal
Mitochondrion
★ The mitochondrion is used
for energy production.
★ Mitochondria likely evolved
from ​engulfed prokaryotes
that once lived as
independent organisms. At
some point, a eukaryotic cell
engulfed an aerobic
prokaryote, which then
formed an endosymbiotic
relationship with the host
eukaryote, steadily
developing into a
mitochondrion.
Both
Rough Endoplasmic Reticulum
★ The rough endoplasmic
reticulum produces protein. It
sends the protein out of the
cell.
Both
★ The most precise hypothesis
is that the endoplasmic
reticulum started off from the
nuclear envelope.
Nuclear Envelope
★ The NE separates the nucleus
from the cytoplasm in
eukaryotic cells. It also helps
in gene regulation.
★ The nuclear envelope is
believed to be formed by
either a coalescence of
vesicles acquired from the
endoplasmic rectculum at the
surface of the chromosomes
or by thin lamellar units of
endoplasmic rectculum
draping themselves around
the chromosomes at the poles
in telophase.
Animal
Nucleoplasm
★ The nucleoplsm stores DNA
Animal
and promotes an isolated
environment where controlled
transcriptions and gene
regulation is enabled.
Nucleolus
★ The nucleous produces and
Animal
assembles the cell’s
ribosomes.
★ The matter from which the
nucleous is formed is from a
fat-body. It diffuses into the
ovarioles, then into the
cytolasm and the nuclei of
oocytes. ​It then coalesces to
form a single large nucleolus
of the Limulus oocyte and the
three or four smaller ones of
the Tenebrio germ-cell.
Nuclear Pore
★ Nuclear pores allows small
molecules and ions to diffuse
into or out of the nucleus.
Nuclear pores also allow
proteins to enter the nucleus
from the cytoplasm if the
proteins have special
sequences that showthey
belong in the nucleus.
Animal
Smooth Endoplasmic Recticulum
★ The smooth endoplasmic
reticulum produces
lipids/fats. It also detoxifies
Both
poisons and drugs.
★ The most precise hypothesis
is that the endoplasmic
reticulum started off from the
nuclear envelope.
Cell Membrane
★ The cell membrane protects
Both
the cell from damage. It also
facilitates communication and
signaling between cells.
Cilium
★ The cilium​ ​keeps the airways Animal
clear of mucus and dirt,
allowing us to breathe easily
and without irritation.
★ The theory suggests that
cilium originated from a
permanent symbiosis between
an ancient Spirochete
bacterium (spiral shaped
bacteria that can be
dangerous to humans) and an
Archaebacterium
(microorganisms considered
to be an ancient form of life
that evolved separately from
the bacteria and ​blue-green
algae​, and they are sometimes
labelled as a kingdom).
Ribosomes
★ Ribosomes are responsible
for bringing amino acids
together to make protein.
★ The earliest origins of
ribosomes likely lie in the
Ribonucleic acid (RNA)
world. Studies show that old
ribosomes made solely1 of
rRNA could have developed
the ability to synthesize
peptide bonds.
Both
Central Vacuole
★ The central vacuole stores
water. It also pushes the
contents of the cell towards
the cell membrane, allowing
them to take in light
energy/​maintains turgor
pressure against the cell wall.
Plant
Plasmodesmata
★ The plasmodesmata helps
Plant
with intercellular
communication by allowing
molecules to pass directly
from cell to cell.
★ The endoplasmic reticulum
plays a role in the origin of
the plasmodesmata.
Plasmodesma originates
during cytokinesis when cell
plate is created. It is formed
at those areas of the cell plate
where the endoplasmic
reticulum (ER) is present and
stops the fusion of vesicles.
Cell Wall
★ Protecting the cell and giving
the cell shape.
Plant
Chloroplast
★ Chloroplast converts light
Plant
energy into chemical energy,
helping with photosynthesis.
★ Just like the mitochondria,
chloroplast likely originated
from an ancient symbiosis
when a nucleated cell covered
a photosynthetic prokaryote.
Sources:
https://www.khanacademy.org/test-prep/mcat/cells/eukaryotic-cells/a/organelles-article
https://www.toppr.com/ask/question/organelle-which-plays-an-important-role-in-detoxification-of-drugs-and-toxins-is/
https://microbenotes.com/plasmodesmata-structure-and-functions/
https://ciliopathyalliance.org/cilia
https://biologydictionary.net/centrosome/#:~:text=two%20during%20mitosis.-,Function%20of%20Centrosomes,shapes
%20of%20animal%20cell%20membranes
https://tardigrade-in.cdn.ampproject.org/v/s/tardigrade.in/question/which-of-the-following-sequence-is-correct-for-theorigin-of-bmlwwclw/amp?amp_gsa=1&amp_js_v=a6&usqp=mq331AQHKAFQArABIA%3D%3D#amp_tf=From%20
%251%24s&aoh=16137083000060&referrer=https%3A%2F%2Fwww.google.com&ampshare=https%3A%2F%2Ftar
digrade.in%2Fquestion%2Fwhich-of-the-following-sequence-is-correct-for-the-origin-of-bmlwwclw
https://www.nature.com/articles/188239a0
https://www.toppr.com/ask/en-ca/question/golgi-body-originated-from/
https://en.wikipedia.org/wiki/Peroxisome#:~:text=The%20protein%20content%20of%20peroxisomes,gradually%20ev
olved%20a%20symbiotic%20relationship​.
https://www.nature.com/scitable/topicpage/plant-cells-chloroplasts-and-cell-walls-14053956/
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