BI503- Cell Biology
- Created by: Joe Parker_
- Created on: 20-10-20 17:14
Other questions in this quiz
2. In a lipid bilayer, lipids can theoretically diffuse between the membrane leaflets (termed transbilayer diffusion or “flip-flop”) or diffuse laterally in the same leaflet. Which of the following statements is TRUE?
- d) Lateral movement of lipids is faster than transbilayer movement.
- e) B and C only
- b. Lateral movement of lipids is slower than transbilayer movement.
- a) Transbilayer diffusion from one membrane leaflet to the other never happens in a biological membrane unless catalysed by an enzyme.
- c. Lateral diffusion requires a catalyst.
3. In Rao and Johnsons Cell fusion experiments, which of the following cell fusions had two mitotic nuclei in the resultant cell:
Select one:
- A G1 Cell fused with a G2 cell.
- A G2 Cell fused with an M phase cell
- A G1 Cell fused with an M phase cell
- An S phase cell mixed with an M phase cell
- A G1 Cell fused with an S phase cell.
4. While examining the crystal structure of a membrane protein, you find several phospholipid molecules bound to the protein. You know that these lipids …
- may enhance the crystallization of the bound membrane proteins.
- can have head groups of various sizes and charges depending on the protein.
- all of the above
- interact specifically with the protein.
- are thought to help stabilize many membrane proteins.
5. In Rao and Johnson's Cell fusion experiments, which of the following cell fusions resulted in a cell with two replicating nuclei?
- a G1 cell fused with an M phase cell.
- a G2 cell fused with an S phase cell.
- a G1 cell fused with a G2 cell.
- a G1 cell fused with an S phase cell.
- an S phase cell with an M phase cell.
Comments
No comments have yet been made