Energy Flow in Ecosystems Vocabulary Quiz

The ability of a system to do work; required for changes to happen within a system.

• Cellular Respiration
• Energy
• Photosynthesis
• Molecule

Anything that has volume or mass.

• Matter
• Microorganism
• Phytoplankton
• Molecule

A chemical reaction during which plants convert radiant energy from the Sun to chemical energy; the reaction converts carbon dioxide and water into sugar (glucose) and oxygen.

• Conservation of Matter
• Energy
• Photosynthesis
• Chemical reaction

The simplest unit of a chemical compound that can exist, formed when two or more atoms join together chemically.

• Reactant
• Energy
• Chemical Reaction
• Molecule

A sugar composed of six carbon atoms that is the preferred energy source for most cells; produced by photosynthesis.

• Product
• Matter Cycle
• Glucose
• Molecule

The process by which one or more substances change to produce one or more different substances.

• Product
• Chemical Reaction
• Reactant
• Molecule

The law that says matter is neither created nor destroyed in ordinary chemical or physical processes.

• Conservation of matter
• Conservation of mass
• Chemical Equation
• Chemical Reaction

A substance that takes part in and undergoes change during a reaction.

• Product
• Chemical Reaction
• Chemical Change
• Reactant

A naturally occurring element of Earth; essential building block of organic compounds

• Oxygen
• Carbon Dioxide
• Carbon
• Water

A gas produced by plants during photosynthesis that animals use for respiration.

• Oxygen
• Carbon Dioxide
• Carbon
• Water