7th Grade Science Review Quiz

What is the basic unit of life?

• atom

• molecule

• organism

• cell

What is the process by which plants make their own food?

• Photosynthesis

• Fertilization

• Transpiration

• Respiration

What is the function of the mitochondria in a cell?

• Stores genetic material for the cell

• Produces energy through cellular respiration

• Assists in the synthesis of proteins

• Regulates the movement of substances in and out of the cell

What is the chemical equation for photosynthesis?

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

• 2CO2 + 2H2O + light energy → C3H6O3 + 2O2

• 4CO2 + 4H2O + light energy → C4H8O4 + 4O2

• 8CO2 + 8H2O + light energy → C8H16O8 + 8O2

Which human body system is responsible for exchanging oxygen and carbon dioxide with the environment?

• Circulatory system

• Nervous system

• Digestive system

• Respiratory system

What is the function of the circulatory system?

• Digesting food in the stomach

• Producing hormones in the endocrine system

• Regulating body temperature

• Transporting blood, oxygen, and nutrients throughout the body

What type of reaction occurs when two or more substances combine to form a new compound?

• Chemical reaction

• Nuclear reaction

• Biological reaction

• Physical reaction

What is the function of the skeletal system?

• Support, protection, and movement

• Respiration and gas exchange

• Reproduction and hormone production

• Digestion and absorption

What is the process by which cells break down glucose to release energy?

• Photosynthesis

• Cellular respiration

• Glycolysis

• Fermentation

Which organelle is responsible for protein synthesis in a cell?

• Mitochondria

• Golgi Apparatus

• Ribosome

• Endoplasmic Reticulum