Summary
Summary Topic 3 Prokaryotes
- Course
- Institution
Edexcel Biology Topic 3 Prokaryotes, Structure, Bacteria,
[Show more]
Seller
Follow
milosmithnotes
Content preview
Ultrastructure of Prokaryotic cellsProkary
cells
otic
-
-
simple
small 1-104m
-
no membrane bound organelles
S.I units -
unicellular
-shared with -
cell membrane
Eukaryo
ta-cytoplasm
-
ribosomes
.
bacterial cell wall-peptidoglycan
↳> some are
gram positive which is multiple layers of
peptidoglycan
some are
graw negative
which
single layer of peptidoglycan
-
is
toutermembrane
-
Capsule T water and
polysaccharides
↳ stops dessication
(drying out)
chemicals
-
provides protection to toxic
Mesosome-folding of the inner
cellular
membrane
↳
function in respiration .
circular DNA
essential to
-
growth
contains
and
genes
survival
which code
for proteins
Plasmid-circular and contains gene which code
protein stress (non essential)
for in survival uncer
Nucloid
region of cytoplasm
circular DNA
->
containing .
70s ribosomes -
smaller
bacterial flagellum >
-
motility/locomotion
protein called flagellin
One or more
Propulsion ↑ rotation
from rotor
rotate
hook and
filment
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller milosmithnotes. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $3.76. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
59804 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 15 years now