#Question id: 4381
#Unit 3. Fundamental Processes
All the following statements about heterochromatin are true except:
#Question id: 1519
#Unit 4. Cell Communication and Cell Signaling
Following statements are regarding to the FOXO3a protein.
A. In the presence of growth factors, FOXO3a is non phosphorylated and mainly localizes to the nucleus, where it activates transcription of several genes encoding pro-apoptotic proteins.
B. When growth factors are removed from the cells, PKB becomes active and phosphorylates FOXO3a.
C. Phosphorylated FOXO3a binds to cytosolic phosphoserine-binding protein 14-3-3 to bind FOXO3a and thus sequester it in the cytosol.
D. Dephosphorylated FOXO3a binds to cytosolic phosphoserine-binding protein 14-3-3 to bind FOXO3a and thus sequester it in the cytosol.
Which of the following is correct?
#Question id: 1271
#Unit 4. Cell Communication and Cell Signaling
Common sugars found in proteoglycans include all of the following except:
#Question id: 5761
#Unit 8. Inheritance Biology
E. coli cells were spread on an agar plate, producing 1000 colonies. The colonies are replica plated on two agar plates containing the antibiotic kanamycin and one agar plate without antibiotics. All of the colonies are able to grow on the agar plate without antibiotic but only 4 colonies are able to grow on each of the agar plates containing kanamycin. You notice that the four colonies that grew on each of the kanamycin containing plates are in the exact same position. This demonstrates
#Question id: 1378
#Unit 4. Cell Communication and Cell Signaling
Which of the following apply to fibronectins? Please select all that apply.
a) They are disulphide linked dimers, with each polypeptide composed of a number of binding domains joined together by short flexible segments.
b) They have an essential role in linking the extracellular matrix to its underlying cells.
c) Like integrins, fibronectins are directly connected to the cytoskeleton.
d) They participate in 'inside out' and 'outside in' signalling mechanisms.