Science 7 Elimination for Quiz Bee

What is the basic unit of life?

• Atom

• Cell

• Tissue

• Organ

Which organelle is known as the “powerhouse of the cell”?

• Nucleus

• Chloroplast

• Mitochondria

• Ribosome

What process do plants use to make food using sunlight?

• Respiration

• Photosynthesis

• Transpiration

• Digestion

Which part of the cell controls all its activities?

• Nucleus

• Cytoplasm

• Cell membrane

• Vacuole

What is the green pigment in plants that captures light energy?

• Hemoglobin

• Carotene

• Chlorophyll

• Glucose

Which state of matter has definite volume but no definite shape?

• Solid

• Liquid

• Gas

• Plasma

What is the chemical symbol for water?

• HO

• H₂

• H₂O

• OH₂

Rusting of iron is what kind of change?

• Physical

• Reversible

• Chemical

• Temporary

Which element is needed for breathing and combustion?

• Carbon

• Nitrogen

• Hydrogen

• Oxygen

What type of mixture has uniform composition throughout?

• Heterogeneous

• Homogeneous

• Suspension

• Colloid