Questions about Biology.?

Question

Ok I have a biology midterm coming up and i have a couple questions.

1) What role does ATP play in cellular activites

2) If a cell were exposed to a poison that blocked the cell's ability to manufacture ATP, what effect would that have on the cell membrane's transport process?

3) How is ATP made in a light reaction?


Thank you so much for helping!!

Answer 1

1. ATP provides the energy for cellular activities.
2. Without ATP there would be no active transport because ATP is the energy for active transport. It's what makes the transport proteins change shape to move the materials through the membrane.
3. ATP is made by a special enzyme that whirls around when H+ ions rush through it. The H+ ions build up inside the thylakoid space (some from the splitting of water and some from being shipped into the space from outside the thylakoid). Then the H+ stream out through the enzyme that is embedded in the thylakoid membrane. This enzyme is called ATP synthetase. The enzyme spins around and fastens a phosphate group onto an ADP to make ATP.

Answer 2

This is an interesting question, and one that has been confusing me for a long time.