Photosynthesis - From Science News Article

What are chloroplasts?

• Particles in the air that plants absorb to make food

• Organelles in plant cells that convert light energy into chemical energy

• Structures that store nutrients in plant cells

• Cells that make up the green color of plants

What do light reactions in chloroplasts produce?

• Glucose

• Oxygen and ATP

• Carbon dioxide

• Water

What is the main product of dark reactions in chloroplasts?

• Chlorophyll

• Glyceraldehyde 3-phosphate

• ATP

• Oxygen

Where do dark reactions outside of chloroplasts occur?

• On the cell membrane

• In the cytosol

• In the mitochondria

• In the nucleus

How does an atom absorb light energy?

• By emitting photons

• By transferring electrons to another atom

• By an electron moving to a higher energy level

• By breaking chemical bonds

What is the chemical formula of chlorophyll a?

• C6H12O6

• CO2

• C55H72MgN4O5

• H2O

What is the role of chlorophyll a in photosynthesis?

• It splits water molecules

• It absorbs light energy

• It produces oxygen

• It converts ATP to glucose

How much energy does a photon of red light have?

• 1.77 eV

• 0.5 eV

• 3.11 eV

• 2.5 eV

Why does chlorophyll a appear green?

• It converts green light into energy

• It emits green light

• It reflects green light

• It absorbs green light

What is a possible application of Chong Liu’s technology?

• Developing a new type of battery

• Inventing a new kind of light bulb

• Improving the efficiency of converting sunlight to sugar

• Creating a new form of computer processor