Photosynthesis and Chemosynthesis

What is the main purpose of chemosynthesis?

• To make chemicals

• To make food

• To make oxygen

• To make sunlight

What are the reactants of chemosynthesis? Reactants are the things needed for a process to occur. (Select ALL that apply)

• sunlight

• hydrogen sulfide

• oxygen

• carbon dioxide

• water

What is chemosynthesis?

• Where bacteria use light energy to make glucose.
• Where plants use light energy to make glucose
• Where bacteria use chemical reactions to make glucose

What is the source of energy for chemosynthesis

• Light energy
• Chemical energy
• Kinetic energy

What is often used as a reactant in chemosynthesis?

• Oxygen
• Glucose
• Carbon dioxide

Where are the places that sulfur bacteria live.

• Near deep sea volcanic vents and inside tube worms.  
• In soil and roots of some plants
• Near volcanic vents and in soil

What do we mean by a symbiotic or mutualistic relationship?

• Where 2 living organisms live close together and only 1 organism benefits, the other is harmed.
• Where 2 living organisms live close together and both organisms benefit.
• Where 2 living organisms live close together and one organism benefits and the other eventually dies.

Some chemosynthetic bacteria change the hydrogen sulphide from volcanic vents into ...

• Oxygen
• Carbon dioxide
• Sulfur

Where does chemosynthesis occur?

• In plants
• In animals
• At the bottom of the ocean
• In the sky

What is true of chemosynthesis?

• It was just invented a few years ago
• It may be older than photosynthesis
• It requires oxygen
• It requires sunlight