1- Which of the following examples involves active transport?
a) Release of calcium stored at high concentrations in the endoplasmic reticulum into the cytoplasm.
b) Sodium ions (Na+) flowing into a cell through a channel protein.
c) Transporting calcium out of a cell into an solution rich in calcium.
d) Uptake of a hydrophobic dye newly placed in a solution by cells living in the solution.
2- Chemical analysis of a cellular membrane would normally reveal the presence of
A) sugars
B) proteins
C) lipids
D) nucleic acids
E) A, B and C
3- If you place a culture of animal cells into a container filled with molecules of red dye that have a strong negative charge, and the dye ends up inside the cell, what is the most likely explanation for the uptake?
a) osmosis
b) active transport
c) pinocytosis
d) phagocytosis
e) exocytosis
1- Which of the following examples involves active transport?
| a) | Release of calcium stored at high concentrations in the endoplasmic reticulum into the cytoplasm. | |
| b) | Sodium ions (Na+) flowing into a cell through a channel protein. | |
| c) | Transporting calcium out of a cell into an solution rich in calcium. | |
| d) | Uptake of a hydrophobic dye newly placed in a solution by cells living in the solution. |
2- Chemical analysis of a cellular membrane would normally reveal the presence of
| A) sugars | ||
| B) proteins | ||
| C) lipids | ||
| D) nucleic acids | ||
| E) A, B and C |
3- If you place a culture of animal cells into a container filled with molecules of red dye that have a strong negative charge, and the dye ends up inside the cell, what is the most likely explanation for the uptake?
| a) | osmosis | |
| b) | active transport | |
| c) | pinocytosis | |
| d) | phagocytosis | |
| e) | exocytosis |
Related textbook solutions
Related questions
You study a transmembrane protein that is trafficked through theendoplasmic reticulum but ultimately âlivesâ in the plasmamembrane. Suppose the domain of this protein which is exposed onthe outer face of the endoplasmic reticulum membrane was covalently(and specifically) labeled with a fluorescent dye in a living cell.When the protein is distributed among cellular compartments, wherewould you expect the dye to be located?
Question 7 options:
A) The dye will be on the outer face of the endoplasmicreticulum, on the inner face of the Golgi apparatus, and on theextracellular face of the plasma membrane.
B) The dye will be on the inner face of the endoplasmicreticulum, on the inner face of the Golgi apparatus, and on theintracellular face of the plasma membrane.
C) The dye will be on the outer face of the endoplasmicreticulum, on the outer face of the Golgi apparatus, and on theintracellular face of the plasma membrane.
D) The dye will be on the outer face of the endoplasmicreticulum, on the outer face of the Golgi apparatus, and on theextracellular face of the plasma membrane.
Eukaryotic cells manufacture fibrous cytoskeletal proteins thatfunction in the cytoplasm to maintain cell shape by providingstructural support, move materials within the cell, and move theentire structure. Which of the following predictions about proteinsynthesis, processing, and trafficking applies to the general classof cytoskeletal proteins?
Question 8 options:
| |||
| |||
| |||
|
