What is the term for an organism that makes its own source of chemical energy?

• chloroplast

• decomposer

• producer

• protist

The part of cellular respiration in which glucose is broken down is called __________.

• glycolysis

• photosynthesis

• electron transport

• aerobic respiration

Which of these is a reactant in photosynthesis?

• O₂

• CO₂

• COOH

• C₆H₁₂O₆

The basis for the energy in an ecosystem is provided by __________.

• chemosynthesis

• consumers

• heterotrophs

• producers

Which phrase describes the function of mitochondria?

• packages proteins

• breaks down chemicals

• supplies energy to the cell

• fluid-filled sac used for storage

What do all the biotic and abiotic factors in a given area make up?

• a habitat

• a population

• a community

• an ecosystem

Through photosynthesis, plants convert energy from sunlight into __________.

• light energy

• thermal energy

• chemical energy

• mechanical energy

Which organisms help convert gaseous nitrogen into ammonia in the nitrogen cycle?

• bacteria

• grasses

• squirrels

• trees

What do chloroplasts and mitochondria have in common?

• production of ATP

• presence in all cells

• digestion of cell wastes

• absorption of light energy

Which phrase about fermentation is correct?

• is an aerobic process

• occurs only in bacteria

• takes place without oxygen

• uses electron transport chain