Question

Which of the following means of transport would most likely be used for moving a medium-sized molecule (like a monosaccharide or an amino acid) from a low concentration on the outside of a cell to a high concentration on the inside of a cell? a.Facilitated diffusion through a transporter proteinb.Passive transport
c.Facilitated diffusion through an ion channel proteind.Active transport through a "pump" protein

Answer 1

Answer:

D. ACTIVE TRANSPORT THROUGH A PUMP PROTEIN.

Explanation:

The process is one which is from a low concentration outside to a high concentration inside (against the concentration gradient) and it requires energy.

Amino acids and monosaccharides can be transported into the cell by facilitated diffusion with the help of a transporter protein and through active transport.

For the question, the appropriate answer is active transport via a pump (Secondary active transport)

An example is the sodium cotransport.

In this process, sodium is transported alongside another substance like amino acids. The energy needed for the movement of sodium is obtained from ATP while the energy released by the movement of sodium is used for the transport of amino acids and glucose.