Membrane bounded and non membrane bounded cell organelles (Structure, Functions and Importance)
0 view 0 purchase
Course
Cell Biology
Institution
Inside the cell we have compartmentalization known as cellular organelles. An organelle is actually a specialized subunit within the cell that has specific function.
Cellular organelles have been divided into two major categories:
Membrane bounded organelles (Endoplasmic reticulum, Mitochond...
Definition:
“Inside the cell we have compartmentalization known as cellular organelles.
An organelle is actually a specialized subunit within the cell that has specific
function.”
Explanation:
Compartmentalization in the cells is largely about efficiency. Separating the cell
into different parts allows for the creation of specific microenvironments within a cell. It is
similar to the way that a home needs different environments in different rooms. So, the
cells have evolved to become super-efficient by creating several spaces where multiple
functions takes place at a time and allowing the cell to perform all of its vital activities.
Roles of compartments:
Compartments have three main roles:
• One is to create physical boundaries for biological processes that enable the cell to
carry out different metabolic activities at the same time. This may include keeping
certain biomolecules within a region or keeping other molecules outside.
• Second is to generate a specific micro-environment to spatially or temporally regulate
a biological process.
• Third role is to establish specific locations or cellular addresses for which processes
should occur at which region of the cell.
For example: A transcription factor may be directed to a nucleus, where it can
promote transcription of certain genes. In terms of protein synthesis, the necessary
organelles are relatively near one another. The nucleolus within the nuclear envelope is
the location of ribosome synthesis. The destination of synthesized ribosomes for protein
translation is rough endoplasmic reticulum which is connected to and shares the same
membrane with the nucleus. The Golgi body is also near the rough ER for packaging and
distribution of proteins.
3
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 iqrafatima1. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $8.49. You're not tied to anything after your purchase.
