Robbins chapitre 1

Question 1

Which of those 2: phosphatidylinositol and phosphatidylserine gives a ‘‘eat mea’’ signal when flipped?

Answer 1

phosphatidylserine

Question 2

2 ways plasma membrane proteins can be agreggated to form large complexes

Answer 2

chaperone molecules from the RER or lateral difusion

Question 3

Anchoring junctions include: (3)

Answer 3

adherens junction, desmosomes/hemidesmosomes

Question 4

Kinases phosphorylate tyrosine residue . Which protein removes those residues to modulate singaling?

Answer 4

phosphatase

Question 5

what are major constituents of basal membrane?

Answer 5

type IV collagen (non fibrillar collagen) and laminin

Question 6

name 1-3 adhesive glycoproteins

Answer 6

laminin
fibronectin
integrins

Question 7

what is the job or CDK inhibitors?

Answer 7

enforcing the cell cycle checkpoints by modulating CDK-cyclin complex activity

Question 8

Where are the 2 checkpoints in cellular cycle?

Answer 8

G1-S: check for DNA dammage
G2-M check for DNA dammage or unduplicated DNA.

Question 9

symmetric va asymmetric division of stem cells

Answer 9

symmetric: both daughter cells can elf renew vs asymmetric: one of the 2 daughter cells cannot renew