Biology - check answers !

1. which of the following is not a step in the light-dependent reactions?
my answer was d. atp and nadph are used to produce high energy sugars.

2. what are the products of the light-dependent reactions?
my answer was b. atp, nadph, and oxygen gas

3. if carbon dioxide is competely removed from a planet's environment, what would you expect to happen to the plant's production of high-energy sugars?
my answer was b. no sugars will be produced.

4. how does the clavin cycle differ from the light dependent reactions?
my answer was c. it takes place in chloroplasts.

5. which of the following is necessary for light-independent reactions to proceed?
answer was oxygen.. or atp. im not sure because both can be used for the reaction, but only 1 is actually capable of getting the reaction to turn out effectively.