Question

select all of the following that are true about photosynthesis.
check all that apply
the light dependent reactions produce carbon dioxide
the light dependent reactions take place in the cytoplasm, and the light independent reactions occur in the
the light - dependent reactions produce nadph and atp
the light - independent reactions dont require light but can occur in its presence

Explanation:

1. Analyze "The light dependent reactions produce carbon dioxide": Light - dependent reactions use water and produce oxygen, while carbon dioxide is used in light - independent reactions. So this statement is false.
2. Analyze "The light dependent reactions take place in the cytoplasm...": Light - dependent reactions occur in the thylakoid membranes of chloroplasts, and light - independent reactions occur in the stroma of chloroplasts. So this statement is false.
3. Analyze "The light - dependent reactions produce NADPH and ATP": In light - dependent reactions, during the electron transport chain, NADP⁺ is reduced to NADPH and ADP is phosphorylated to ATP. So this statement is true.
4. Analyze "The light - independent reactions don't require light but can occur in its presence": Light - independent reactions (Calvin cycle) use the products of light - dependent reactions (NADPH and ATP) and can occur in the presence or absence of light as long as the necessary reactants are available. So this statement is true.

Answer:

• The light - dependent reactions produce NADPH and ATP (checked)
• The light - independent reactions don't require light but can occur in its presence (checked)