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Cell 1

What does choline phspholipids consist of?
Sphingomyelin
Lecithin
Kephalin
Phosphatidylserine
Phosphatidylinositol
 
What does amine phospholipids consist of?
Sphingomyelin
Lecithin
Kephalin
Phosphatidylserine
Phosphatidylinositol
Where is colesterol mounted?
On the inside of the cellmembrane
On the outer layer
In between phospholipid
What can NOT diffuse trough freely through the cell membrane?
Gases
Hydrophobic molecules
Hydrophillic molecules
Fatty acids
Which is responsible for passive transport?
Channels
Carriers
Pumps
Which is constantly open?
potassium leak channels
Aquaporins
Calcium channels
Sodium-pumps
Sodium channels
What is uniport transport?
Transport of 1 substance
Transport of 2 substances
Transport of mutiple substances
 
What is transport of two substances in the same direction?
Symport
Antiport
Uniport
Doubleport
Which is an example of symport transportation?
Na+ -glucose pump
H+ -K+ pump
Na+ -K+ pump
Potassium leak channels
What is the name of the membrane protein which allows unfolded protein to pass through the cell membrane?
Translocons
Integrins
Cadherins
Selectins
Which does not have translocons?
Cell membrane
ER membrane
Mitochondria
Perixisomes
What are the pathway of vesicular transport called?
Membrane trafficking
Vesicular trafficking
Endosome trafficking
Lysosome trafficking
What is another word for cell membrane?
Plasmalemma
Glycocalyx
Basallaris
Laminaris
Which is not a function of glycocalyx?
Participation in endocytosis
Participation in cell-cell recognition and contact
Protection of cell from physical and chemical damage
Transport of substances
Which is not an adhesion molecule?
Cadherins
Spectrins
Selectins
Immunoglobulin superfamily
Integrins
Which membrane does not participate in membrane trafficking?
Perixisomes membrane
Mitochondria membrane
Golgi apparatus membrane
Lysosome membrane
Rough ER membrane
Smooth ER membrane
Which of the chromatins are active?
Euchromathin
Heterochromathin
What chromatin is temporarily inactive (genes switched off during differentiation)?
Constitutive euchromatin
Constitutive heterochromatin
Facultative euchromatin
Facultative heterochromatin
How many basepairs does a nucleosome contain?
146 base pairs
80 base pairs
235 base pairs
120 base pairs
Which histone participate in connecting neighboring nucleosomes?
H1
H2A
H2B
H3
H4
Where is ribosomal subunits produced?
The nucleolus
Cytoplasm
Rough ER
Smooth ER
In which chromosome do we not find rDNA areas?
13
14
15
21
22
16
What is the space between membranes in the nuclear envolope called?
Perinuclear space
Nuclear lamina
Subnuclear space
Intranuclear space
Which protein is not part of the nuclear pore complex?
Cytoplasmic ring
Columns
Nuclear ring
Central area
Translocons
What is cytoplasmic importins?
Receptors for nuclear proteins
Receptor for RNA's and ribosomal subunits
What is polyribosomes?
Multiple ribosomes associated with mRNA chain
Multiple ribosomes fused together
Large and small subunit fused together
What does NOT free (cytosolic) ribosomes produce?
Lysosomal proteins
Nuclear proteins
Mitochondrial proteins
Peroxisomal proteins
Cytoskeletal proteins
Cytosolic proteins
What is the function of the hydrophobic „stop” sequence?
To incorporate the protein in the membrane
To determin where to protein should be sent
To denaturate the protein
To make it available to exocytosis
When are proteins incorporated to ER?
During translation
After translation
Before translation
Which binds first to the mRNA?
Large ribosomal subunit
Small ribosomal subunit
TRNA
Which direction does the translation occur?
From 5' to 3'
From 3' to 5'
What is signal recognition particle?
A particle which makes the peptide bind to the receptor of translocon
A particle which "says" that ribosomes are translating wrongly
A particle which makes the ribosomes produce signal sequence
What binds the large ribosomal subunit to the translocons?
Ribophorins
Riboreceptors
Ribonephrins
Clathrin
Which of the ER have mainly flat cisternae?
RER
SER
Which of the ER have most SRP receptors?
RER
SER
Which of the ER does NOT have ribosomes?
RER
SER
Which of the ER are responsible for early postranslational modifications (initial glycosylation, folding)
RER
SER
Which of the ER is responsible for calcium storage?
RER
SER
Which of the ER does not have any translocons?
SER
RER
What is a dictyosome?
A subunit of the Golgi apparatus
A subunit of RER
A subunit of SER
A subunit of mitochondria
Which og the dictyosome is concave?
Cis
Trans
Which is the thickest?
Cis
Trans
Which is the right order?
ER → CGN → cis → trans → TGN
ER → cis → CGN → trans → TGN
ER → CGN → cis → TGN → trans
ER → cis → CGN → TGN → trans
Which is the precoursor of lysosome?
Hydrolase
Secretory vesicles
Membrane vesicles
What is NOT a function of the Golgi apparatus?
Membrane remodeling
Glycosylation, phosphorylation and sulfation of proteins
Sorting of proteins into different vesicles
Production of proteins
Which vesicle does NOT have a clathrin coat?
Secretory vesicles
Membrane vesicles
Lysosomes
Mannose-6-phosphat plays a part in what?
Making secretory vesicles
Making membrane vesicles
Making lysosomes
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