Question

What were your predicted results for glucose transport in the cold condition (4°c, 15mm glucose)? briefly state the physiologic basis for your prediction. did your results in lab support your prediction? if not, provide a possible explanation?

Answer 1

Glucose would be transported but it would be less; concentration of glucose in sac is less than the control concentration.

Answer 2

The glucose transport will decrease in low temperatures as it is an enzyme mediated mechanism and the activity of the enzymes decreases at low temperatures.

Decreased temperatures have negative impact on cell membrane and transport. When the temperature is low, the tails of phospholipids become rigid and movement is slow. The overall fluidity of the membrane is decreased and this restricts the entry of glucose into the cell. The glucose transport occurs via facilitated diffusion and diffusion is also a temperature dependent process.