This preview shows page 1. Sign up to view the full content.
Unformatted text preview: mall spaces. Shows many of the characteristiscs that human show.
Its phisyology is not that different from humans
> A Zebra fish (Danio rerio) is becoming more popular for medical research.
Work on development, The early stages of the embroynic , it has external
fertilization and the eggs are clear, so u can see the embryo. Its genome is
sequenced, they are small so u can hold alot of them in the lab. Have a
generation time of 3 months. Easy to breed, they breed everyday. The heart
cells can heal itself. > The oragnelles that u find in a eukaryote cell. When u look at
a eukaryote cell the # of membrane bound should jump out at u.
There is a membrane-bound nucleus, membrane-bound
organelles, there are membranes all over the place. This is the
key charateristic of eukaryote cell.
> The membrane-bound organelles are part of the cytoplasm.
They are suspended in the cytosol
> Cytosol - Is the aqueous solution, the semi liquid solution of
salts and organic molecules
> Cytoplasm - is the cytosol and everything u find in it, the
organelles, the ribosomes, the cytoskeleton
>Is the cytosol the same in a eukaryote cell and in a prokaryote
cell? Yes it is more and less the same in both the eukaryote and
> Is the cytoplasm the same in a eukaryote cell and in a
prokaryote cell? No they are not the same b/c eukaryotic cells
have organelles and cytoskeleton in its cytoplasm, where as
prokaryotic cells do not. > Non-membrane bound organelles
> The ribosomes and the cytoskeleton
> the ribosomes in eukaryotic cells are responsable for protein
synthesis. The eukaryotic ribosomes are larger and have more
subuints, where as the prokaryotic are smaller
> the cytoskeleton that u find in eukaryotic cells consists of three
different sets of filiamentous structures. The three are
Microtubules,Microfilaments and Intermediate filaments. They
provide support/structure for the cell, functioning as a transport
system within the cell, and responsable for movement of the cell.
They are complexes of proteins
> The cytoskeleton is not present in prokaryotic cells, they do have
proteins that carry out similar functions, but the cytoskeleton is not
present. Non-membrane bound organelles Cytoskeleton
Support/shape, internal organization, movement of cell, movement
within cell Microfilaments, microtubules, intermediate filaments Ribosomes Protein synthesis Microtubule Intermediate filament Microfilament BIO 1140 – SLIDE 13 Fig. 2.18 > In the prokaryote cells the genetic material takes the form of a single
naked DNA chromosome, free floating the cytoplasm. In eukaryotic
cells the genetic material is contained within the nucleus, the nucleus is
bound by a double membrane, two membrane layers.
> There are Nuclear pores through that double memebrane layer to
allow things to move in and out the nucleus, and things that are moving
in a out are ribosomes bits. Within the nucleus u find the genetic
material of the cell and it is organized differently in eukaryotic cell and
> the outer layer of the nucleus envel...
View Full Document