Science Systems Matter and Energy

What is considered the basic unit of matter?

• cells
• molecules
• lipids
• atoms

Lipids, proteins, carbohydrates, and nucleic acids are called

• marcomolecules
• solutions
• substrates
• hydrocarbons

Water can dissolve many other molecules making it the

• Universal Solvent
• cohesive
• polar
• solution

What is the process that acts as both the input and output of a system?

• photosynthesis
• feedback loop
• cellular respiration
• water cycle

Rain and snow return to Earth from the atmosphere as

• evaporation
• precipitation
• condensation
• transpiration

The circulation of nutrients throughout the environment in cycles is called

• biogeochemical cycles
• cellular respiration cycles
• photosynthesis cycles
• life cycles

Large amounts of this gas keeps Earth warm through the Greenhouse effect. What is the gas ?

• oxygen
• hydrogen
• carbon dioxide
• nitrogen

Organisms require this matter for life processes to take place.

• fertilizers
• beans
• nutrients
• decomposers

What is the central core of an atom called

• compound
• nucleus
• bond
• electron

What marcomolecule is made of C, H, O, N and sometimes S?

• carbohydrate
• proteins
• nucleic acid
• lipids