Bio 227 Exam 2 with Complete Solutions
ain integrity and shape of a cell
n nutrients and form chemical building blocks
3. dispose of wastes Answer-What are the 3 cell functions?
cholesterol Answer-strengthens the cell membrane and stabilizes it at temperature
extremes
glycocalyx Answer-a "c...
Bio 227 Exam 2 with Complete Solutions
1.maintain integrity and shape of a cell
2.obtain nutrients and form chemical building blocks
3. dispose of wastes Answer-What are the 3 cell functions?
cholesterol Answer-strengthens the cell membrane and stabilizes it at temperature
extremes
glycocalyx Answer-a "coating of sugar" on the cells surfaces
passive transport Answer-kinetic energy inherent within a a substance as it moves down
its concentration gradient (diffusion & Osmosis)
active transport Answer-movement of a solute against its concentration gradient
vesicular transport Answer-bulk transport
sodium-potassium pump Answer-moves one type of ion into a cell against its
concentration gradient, while moving another type of ion out of the cell against its
concentration gradient
autophagy Answer-when lysosomes digest molecular structures of damaged organelles
, Bio 227 Exam 2 with Complete Solutions
autolysis Answer-when enzymes from a damaged cells lysosomes are released in the
cytosol, resulting in a rapid digestion of the molecular components of the cell itself
3, 2 Answer-the sodium potassium exchange pump transfers ___ sodium ions out of the
cell for every ___ potassium ions it transports into the cell
proteasomes Answer-"garbage disposal" of unwanted protein
cilia Answer-small hairlike projections extending from the exposed surfaces of some cells
(move mucus and other substances)
flagella Answer-similar to cilia except longer and usually only one present (help propels
an entire cell)
membrane junctions Answer-connect and support cells
tight junctions Answer-seal off intercellular space and prevent substances from passing
between the cells
gap junction Answer-composed of 6 transmembrane proteins and provide a direct
passage way for substances to travel from neighboring cells
connexons Answer-6 proteins that make up the gap junction
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 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 GOLDTUTORS. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for £9.27. You're not tied to anything after your purchase.
