DOC PREVIEW
UW-Madison BIOLOGY 151 - Endomembrane System

This preview shows page 1 out of 3 pages.

Save
View full document
View full document
Premium Document
Do you want full access? Go Premium and unlock all 3 pages.
Access to all documents
Download any document
Ad free experience
Premium Document
Do you want full access? Go Premium and unlock all 3 pages.
Access to all documents
Download any document
Ad free experience

Unformatted text preview:

BIO151 1nd Edition Lecture 5 Outline of Last Lecture - Membrane Fluidity- Membrane Transporto Transport proteinso Energy Requirements Passive and Active Transporto Coupling mechanismsOutline of Current Lecture - Prokaryotic Cells- Eukaryotic Cellso Nucleus o Endomembrane system Traffic patterns Exocytosis/endocytosis Degradation and recyclingCurrent Lecture- Active transport driven by ATP hydrolysiso Transport protein called ATPase- Cotransport: two or more molecules moving at onceo one is moving down the concentration gradiento one is moving up links favorable to unfavorable by using a single transport protein, we can physically link an energetically unfavorable rxn to an energetically favorable rxn.These notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.- Antiport system: two different directions; uses antiporter- Symport System: “same” molecules move in same directions- Single cell = 3.6 billion years agoo Structurally simpleo Biochemically advancedo Prokaryotes (before nucleus) like Bacteria Small (1-10) micrometers Very simple membrane No internal membrane, no organelle- Larger, more complex cells (Eukaryotes=true nucleus)= 1.5 billion yrs agoo Signature organelle: nucleuso 10x bigger than Eukaryotic cell 10-100micrometers in diameter diameter increases by 10x volume increases by 100xo Internal membrane compartments = organelleso As size increases, so does information and energyo DNA content: >10x Multiple DNA molecules  package them into the nucleuso Includes lots of classes: Protist, Animals, Plants, Fungi Endomembrane System: for processing and delivery of materials  inside membrane; all organelles work together simultaneously Cytoskeleton: provide internal structural support Large organelles with additional DNA: includes mitochondria (all Eukaryotes have this), plastids (includes chloroplasts): algae and plantso Plants have: cell walls, vacuoles, and plastidso Fungi have cell walls and vacuoleso Animals have lysosomes which is comparable to


View Full Document
Download Endomembrane System
Our administrator received your request to download this document. We will send you the file to your email shortly.
Loading Unlocking...
Login

Join to view Endomembrane System and access 3M+ class-specific study document.

or
We will never post anything without your permission.
Don't have an account?
Sign Up

Join to view Endomembrane System 2 2 and access 3M+ class-specific study document.

or

By creating an account you agree to our Privacy Policy and Terms Of Use

Already a member?