Exam (elaborations)
UNE PHSL 1010 - Week 2 Lecture Notes Test With Complete Solutions
- Course
- Institution
UNE PHSL 1010 - Week 2 Lecture Notes Test With Complete Solutions...
[Show more]
Content preview
UNE PHSL 1010 - Week 2 Lecture Notes Test WithComplete Solutions
What constitutes lipid rafts? - ANSWER Clusters of similar molecules (phospholipid
heads w/ PLAP, aka phospholipid apoproteins)
What part gives a cell membrane it's fluidity? - ANSWER Cholesterol
Is the phospholipid head polar or nonpolar? - ANSWER Polar
Which part of the phospholipid is nonpolar? - ANSWER Lipid tail
What is the phospholipid head composed of? - ANSWER Serine (or perhaps another
chemical i.e. choline), phosphate group and glycerol
What three kinds of transport proteins are there? ANSWER Carriers
Channel
Pumps
What are the different ways of passive transport? ANSWER Simple diffusion
Facilitated diffusion channels, carriers; protein mediated
Osmosis
What kind of proteins are involved in facilitated diffusion? ANSWER Channel
Carrier
Gap junction proteins between cells
, What are the different active transports? ANSWER Primary
Secondary
Vesicular transport
What determines the rate of simple diffusion? HINT Fick's law - ANSWER -Ficks law =
Rate of diffusion = avail surface area + conc. gradient/ resistance of membrane +
thickness of membrane
- Other factors considered with the rate of diffusion include solubility, composition of the
lipid layer, and molecular size. These in turn will influence the factors outlined in Fick's
law defined above.
What types of gates can exist on a protein channel? - answer -Voltage gated
-Ligand gated
-Mechanically gated
-Temperature gated
-Light sensitive
Give two examples of open channel proteins. - answer -Water channels
-Leak channels
What type of proteins generally change shape to move materials across the plasma
membrane? - answer Carrier proteins
Give some examples of carrier proteins - answer GLUT
-SGLT (Sodium-Glucose)
T/F? Molecules moving against their concentration gradient can diffuse passively into
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 Easton. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $10.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
67866 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now