Science Topics

What is the basic structural and functional unit of all living organisms?

• organ

• cell

• molecule

• tissue

In which organelle does photosynthesis occur?

• mitochondria

• chloroplasts

• nucleus

• endoplasmic reticulum

What is the process by which plants make their food using sunlight?

• Solarization

• Photosynthesis

• Chlorophyll

• Sunfeeding

What is the term for a substance that speeds up a chemical reaction without being consumed in the process?

• facilitator

• enhancer

• catalyst

• accelerator

What type of energy is produced by the flow of electric charge?

• Thermal energy

• Solar energy

• Electrical energy

• Kinetic energy

What is the SI unit of electric current?

• D

• A

• B

• C

Which simple machine is a sloping surface that reduces the amount of force required to move an object?

• Inclined plane

• Tilted surface

• Angled ramp

• Slanted plane

What is the formula for calculating voltage in an electrical circuit?

• V = I * R

• V = I / R

• V = R / I

• V = I + R

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

• Cell division

• Photosynthesis

• Protein synthesis

• Cellular respiration

Which organelle is known as the powerhouse of the cell?

• Mitochondria

• Nucleus

• Ribosome

• Endoplasmic reticulum