Science 8th Grade ACAP

What is the process by which plants make their food?

• Photosynthesis

• Respiration

• Chlorophyll

• Hydrolysis

What is the basic unit of life?

• atom

• organism

• molecule

• cell

What is the force that pulls objects towards the center of the Earth?

• Magnetism

• Gravity

• Repulsion

• Friction

What is the function of the nucleus in a cell?

• Waste elimination

• Cell wall formation

• Control center and genetic material storage

• Energy production

What is the difference between a compound and a mixture?

• The difference between a compound and a mixture is that compounds have fixed proportions of elements chemically combined, whereas mixtures do not have fixed proportions and are physically mixed together.

• Compounds are always homogeneous, while mixtures can be homogeneous or heterogeneous.

• Compounds are always formed through physical changes, while mixtures are formed through chemical changes.

• Compounds are always a single phase, while mixtures can have multiple phases.

What is the role of the mitochondria in a cell?

• Stores genetic material

• Produces energy (ATP) through cellular respiration

• Regulates cell division

• Synthesizes proteins

What is the law of conservation of energy?

• Energy can be destroyed completely

• Energy can be transformed into matter

• Energy can be created out of nothing

• Energy cannot be created or destroyed, only transferred or transformed.

What is the difference between a physical change and a chemical change?

• Physical change involves a change in chemical composition, while chemical change results in new substances with different properties.

• Physical change involves a change in form or appearance without changing chemical composition, while chemical change results in new substances with different properties.

• Physical change involves a change in form or appearance and chemical composition, while chemical change results in new substances with the same properties.

• Physical change results in new substances with different properties, while chemical change involves a change in form or appearance without changing chemical composition.

What is the function of the chloroplast in a plant cell?

• Cell wall formation

• Photosynthesis

• Cell division

• Cell respiration

What is the difference between a renewable and a non-renewable resource?

• Renewable resources can be replenished naturally over time, while non-renewable resources are finite and cannot be easily replaced.

• Renewable resources are always more expensive than non-renewable resources

• Renewable resources are never used in modern industries

• Non-renewable resources are better for the environment than renewable resources