Photosynthesis and Carbon Cycle Questions

Photosynthesis is the process by which:

• plants convert sunlight into chemical energy

• animals produce energy from food

• humans breathe in oxygen

• machines generate electricity

Autotrophs are organisms that:

• produce their own food through photosynthesis or chemosynthesis

• depend on other organisms for food

• are always found in aquatic environments

• are always unicellular

Chlorophyll is defined as:

• A green pigment found in plants

• A type of soil nutrient

• A form of animal protein

• A kind of mineral

What is the equation for photosynthesis?

• Light energy + 6CO2 + 6H2O → C6H12O6 + 6O2

• 6CO2 + 6H2O → C6H12O6 + 6O2 + Light energy

• C6H12O6 + 6O2 → 6CO2 + 6H2O + Light energy

• 6O2 + C6H12O6 → 6CO2 + 6H2O + Light energy

Cellular respiration is defined as:

• the process by which cells convert glucose and oxygen into energy, carbon dioxide, and water.

• the process of photosynthesis in plants.

• the breakdown of proteins into amino acids.

• the conversion of light energy into chemical energy.

Fermentation is defined as:

• a process of chemical breakdown of a substance by bacteria, yeasts, or other microorganisms.

• a method of preserving food by drying it.

• a technique for cooking food using steam.

• a way to extract metals from their ores.

What two processes can be thought of as opposites?

• Photosynthesis and Cellular Respiration

• Evaporation and Condensation

• Melting and Freezing

• Oxidation and Reduction

The Law of Conservation of Mass states that:

• Mass is neither created nor destroyed in a chemical reaction.

• Mass can be created and destroyed in a chemical reaction.

• Mass is only conserved in physical changes.

• Mass is only conserved in closed systems.

The Law of Conservation of Energy states that:

• Energy can be created and destroyed.

• Energy can only be created, not destroyed.

• Energy cannot be created or destroyed, only transformed from one form to another.

• Energy is always destroyed in transformations.

Can energy be created or destroyed?

• Yes

• No

• Maybe