Download Nucleus and Ribosomes?!

NUCLEUS AND RIBOSOMES
Mary Francis Baxter, Morgan Good, Hannah Moore, Cathie Quamme
AP Bio
Period 1&2
CHROMATIN
 Found in eukaryotic plant and animal cells.
 Located within the nucleus.
 Is a network of condensed strands
- coil into rod-like structures called chromosomes
during mitosis
 May cause ATR-X syndrome

- mutations of the ATR-X gene have higher chance of
mental retardation, along with facial and skeletal
abnormalities
 Chromatin is similar to a library in that it stores
information, and not every chromatin is the same
or perfect, just as library books aren’t.
NUCLEOLUS




Is a structural knot of chromatin.
Responsible for the manufacture of ribosomes.
Present in eukaryotic plant and animal cells.
May cause Parkinson’s disease, a neurological disorder
-this occurs when nucleoli do not efficiently carry out protein
synthesis, making the cells defective.
Is similar to a factory in that both the
nucleolus and a factory produce multiples
of the same product, being the
ribosomes, and also in that both a factory
and nucleoli are thrown off in their
production greatly when a small
malfunction occurs.
NUCLEAR PORE
•Each cell have multiple pore, each being a
pathway for the cell to import and export
proteins, and export RNA.
•Responsible for the synthesis of RNA .
•Found in eukaryotic plant and animal cells.
•Can cause various viruses such a HIV
-the nucleolus can allow things into the
cell whih are harmful, then the nucleus can
intensify these.
• similar to a river in that different substances
flow to a new place, and by it’s path-like
structure.
CHROMOSOMES
•carry genetic info.
• equal number of c-somes.
•are divded between daughter cells during nuclear
division.
•contain DNA and some RNA.
• found in eukaryotes (animal and plant).
• can cause down syndrome among many others.
•are much like nurses because they help deliver/care for
babies who are basically big bundles of genetic info <3
•AND much like nurses work in hospitals which are like
eukaryotic cells because of all their various wards, like a
cells organelles.
RIBOSOMES
•can be found in all prokaryotic and eukaryotic organisms.
•are either free-floating in the cytoplasm or attached to the endoplasmic
reticulum.
•make proteins by connecting amino acids into long chains.
•have 2 subunits, which are different for eukaryotic and prokaryotic cells.
•are much like construction workers, because they connect the amino acids
one at a time and because they build a long chain of them. Some scientists
believe that ribosome dysfunction lead to Alzheimer’s disease, Diamond
Blackfan Anemia, and gastric cancer
C’EST LA FINI!