BIO 353 (CELL BIOLOGY) EXAM 1
STUDY REVISION QUESTIONS AND
ANSWERS ARIZONA STATE UNIVERSITY
1. What causes a myosin II molecule to be able to form a
bipolar fiber
✔✔Calcium binding to calmodulin.
2. The diameter of the actin filament is ...... nm
✔✔7
3. Actin filaments will only assemble in parallel bundles
✔✔false
4. The ability of actin filaments to disassemble into small
monomers
✔✔enables the building blocks of actin filaments to move
from one side of the cell to the other.
5. Transmembrane Proteins
✔✔can move laterally and cannot flip 180˚in the membrane.
6. From the following, where would a proline residue be least
likely to be?
✔✔in the middle of an alpha helix
, 7. The presence of 2 disulfide bonds near each other is a good
thing when a stretch of protein is to be immobilized.
✔✔true
8. Submembrane cytoskeletons can provide shape to a cell
✔✔true
9. Beta pleated sheets can provide a unique environment on
one side of the sheet relative to the other side of the sheet
because of the types of side groups that can accumulate
there.
✔✔true
10. The empty center of a single pass transmembrane
protein provides a channel for the transport of ions.
✔✔false
11. Membrane anchors set up the geography of a cell
✔✔true
12. How many amino acids are required to span a typical
membrane?........
✔✔22-24
13. Transmembrane proteins of alpha helices most
frequently span the membrane ...... or ....... times
✔✔1 or 7
STUDY REVISION QUESTIONS AND
ANSWERS ARIZONA STATE UNIVERSITY
1. What causes a myosin II molecule to be able to form a
bipolar fiber
✔✔Calcium binding to calmodulin.
2. The diameter of the actin filament is ...... nm
✔✔7
3. Actin filaments will only assemble in parallel bundles
✔✔false
4. The ability of actin filaments to disassemble into small
monomers
✔✔enables the building blocks of actin filaments to move
from one side of the cell to the other.
5. Transmembrane Proteins
✔✔can move laterally and cannot flip 180˚in the membrane.
6. From the following, where would a proline residue be least
likely to be?
✔✔in the middle of an alpha helix
, 7. The presence of 2 disulfide bonds near each other is a good
thing when a stretch of protein is to be immobilized.
✔✔true
8. Submembrane cytoskeletons can provide shape to a cell
✔✔true
9. Beta pleated sheets can provide a unique environment on
one side of the sheet relative to the other side of the sheet
because of the types of side groups that can accumulate
there.
✔✔true
10. The empty center of a single pass transmembrane
protein provides a channel for the transport of ions.
✔✔false
11. Membrane anchors set up the geography of a cell
✔✔true
12. How many amino acids are required to span a typical
membrane?........
✔✔22-24
13. Transmembrane proteins of alpha helices most
frequently span the membrane ...... or ....... times
✔✔1 or 7
