Match the following with the term that best describes them ✓cellular currency of cell that enables it to transport molecules against the concetration gradient (i.e active transport) ✓can easily cross the semi-permeable plasma membrane ✓act as channels carriers to transport polar molecules like sugars into cells integral part of the plasma membrane A. phospholipids B. proteins C. ATP D. oxygen

Describe and explain the difference between: a. Active and passive transport across a membrane. Give an example (can be broad) of a molecule that crosses a membrane for each mechanism.  b. Primary vs secondary active transport. Give an example of a molecule(s) that crosses a membrane for each mechanism.

The cytoplasm of a certain cell is composed of a solution that is 98% water, 2% solutes. Consider the solution shown in the beaker in this picture: FOOE OOS Foor solution. [Select] Cytoplasm is 98% water, 2% solutes. The solution in the beaker would be considered when compared to [Select] The plasma membrane is impermeable to solutes. Beaker solution is 98% water, 2% solutes the cell. We would expect that the cell would [Select] if it was placed in the would account for whatever changes might occur to the volume of the cytoplasm of the cell when it is placed in the solution.

please answer question

What direction is the sugar molecule (the blue hexagon) going to diffuse?   a. Into the cytoplasm b. Into the extracellular fluid (i.e. the fluid outside the cell) c. The same number of sugar molecules will move into the cytoplasm and the extracellular fluid. d. No diffusion will occur - the membrane prevents all molecules from entering or exiting a cell.

The energy requiring mediated movement of small particles into or out of a cell up their concentration gradient is called A. diffusion B. facilitated diffusion C. active transport  D. osmosis  E. vesicular transport  F. filtration

Select the statement regarding the plasma membrane that is FALSE (if any). Select one: O a. All living organisms have cells with plasma membranes O b. The phospholipid bilayer has a hydrophobic region and a hydrophilic region. c. Because of the plasma membrane's selectivity permeability, a cell's interior is chemically very different from the surroundings outside. O d. None of the above (meaning all statements are true).

Identify the non-polar organic molecule which can pass freely through the plasma membrane.A. CH3CH2OH (ethanol)B. CO2 (carbon dioxide)C. C6H12O6 (glucose)D. N2 (nitrogen gas)E. CH4 (methane

What is assumed as the cell membrane function in connection with it as a mechanical structure? Select one: a. Matrix for enzymatic processes b. Control over the membrane potential с. Control over the ionic composition O d. Displacement of organelles

A selectively permeable A. allows some substance to move across the membrane, but not others B. allows unlimited movement of materials into or out of the cell C. allows substances to enter, but prevent any substances from leaving the cell D. allows only helpful materials to cross the the cell membrane into the cell