91Ó°ÊÓ

Photosynthetic autotrophs use ___ from the air as a carbon source and ___ as their energy source.

Chlorophyll \(a\) absorbs mainly violet and red light, and it reflects mainly ___ light. a. violet and red b. yellow and green c. green only d. white and orange

Light-dependent reactions in plants occur at the ___ . a. thylakoid membrane b. plasma membrane c. stroma d. cytoplasm

In the light-dependent reactions, ___. a. carbon dioxide is fixed b. ATP forms c. \(\mathrm{CO}_{2}\) accepts electrons d. sugars form

What accumulates inside the thylakoid compartment during the light-dependent reactions? a. glucose b. RuBP c. hydrogen ions \(\mathrm{d} . \mathrm{CO}_{2}\)

When a photosystem absorbs light, ___. a. sugar phosphates are produced b. electrons are transferred to ATP c. RuBP accepts electrons d. light-dependent reactions begin

Light-independent reactions proceed in the ___. a. cytoplasm b. plasma membrane c. stroma

The Calvin-Benson cycle starts when ___ a. light is available b. carbon dioxide is attached to RuBP c. electrons leave photosystem II

What substance is not part of the Calvin-Benson cycle? a. ATP b. NADPH c. \(R_{u B P}\) d.PGAL e. \(\mathrm{O}_{2}\) \(f . \mathrm{CO}_{2}\)

Match each event with its most suitable description. $$ \text { ATP formation only } \quad \quad\quad\quad\quad \text { a. rubisco required } $$ $$ \text { \(\mathrm{CO}_{2}\) fixation } \quad \quad\quad\quad\quad \text { b. water molecules split } $$ $$ \text { photolysis } \quad \quad\quad\quad\quad \text { c. ATP, NADPH required } $$ $$ \text { PGAL formation } \quad \quad\quad\quad\quad \text { d. electrons cycled back to photosystem I } $$