Active Transport (GCSE Biology)

If scientists observed that nutrient uptake into a tissue increased when sugar supply to that tissue increased, what is a plausible explanation related to active transport?

Which experimental result would indicate active transport is occurring in a tissue?

How would you expect the rate of an active transport process to respond if the temperature is gradually reduced?

Which process would be most inhibited if a poison stops a cell’s mitochondria from working?

In animal cells the sodium–potassium pump moves which ions and in which direction?

Which observation would indicate that a particular nutrient uptake into leaf cells is by active transport rather than diffusion?

Guard cells open stomata by accumulating potassium ions (K+). How are K+ ions moved into guard cells?

Which experimental treatment would be most likely to reduce active uptake of ions by root cells?

How does active transport differ from facilitated diffusion through carrier proteins?

Why is active transport important for phloem loading in leaves?

How does active transport contribute to maintaining cell pH and ion balance?