General cell biology

Question 1

What are the two most importent cells in the retina

Answer 1

RPE cells and photorecptor cells

Question 2

What are the 3 main groups of lipids

Answer 2

phospholipids
glycolipids
sterols (i.e. cholestrol)

Question 3

what is a cytoskeleton

Answer 3

a dynamic network of protein filaments that extends throughout the cytoplasm

Question 4

what are the main types of cytoskeletons

Answer 4

microfilaments
Microtubules
Intermediate filaments

Question 5

What are the main filament sytems

Answer 5

microfilaments (actin filaments)
Microtubules (tubulin)
Intermediate filaments - robust, durable

Question 6

What are microfilaments made of

Answer 6

two stranded helical polymers of the protein actin

Question 7

What are the different type of cell junctions

Answer 7

gap junctions
tight juntions
anchoring junctions

Question 8

Adherens and
desmosomes
Functions?

Answer 8

Adherens - connects actin networks

desmosomes - connect IF networks

Question 9

What are the endoplasmic reticulum parts and functions

Answer 9

smooth ER - synthesis of lipids

Rough ER - synthesis of proteins

Question 10

what are the two vesicular transport systems within the golgi apparatus

Answer 10

Exocytosis

Endocytosis