Photosynthesis Test

The Light Reactions begin when a __ molecule in photosystem II absorbs a photon of light.

• chlorophyll
• chloroplast
• water
• carbon

Light-excited __ jump up to the next energy level and release energy when they return to their original position.

• photons
• protons
• electrons
• water

In the __ center, the primary electron acceptor (PEA) captures a light-excited electron from chlorophyll a.

• chloroplast
• reaction
• electron
• chlorophyll

A molecule of __ will be split to replace the lost electron in chlorophyll a.

• hydrogen
• carbon dioxide
• carbon
• water

__ is released as a waste product.

• oxygen
• carbon dioxide
• glucose
• water

The PEA passes excited electrons to an electron __ chain.

• acceptor
• transition
• transport
• process

Energy released from electrons along the chain are used to pump __ across the membrane.

• electrons
• H+ ions
• water
• ATP

The ions flow back across the membrane through molecules that will produce __.

• NADPH
• ATP
• ADP
• NADP+

Photosystem I is next. This photosystem passes light-excited electrons to a short electron transport chain which will produce __.

• Oxygen
• ATP
• NADP+
• NADPH

Three molecules of __ combine with RuBP during carbon fixation.

• oxygen
• carbon dioxide
• glucose
• water