Year 7 Science revision Chapter 1,2,3 and 5 (till 5.4)

What is the basic building block of all living things?

• Tissue

• Organ

• Cell

• System

Which two main parts are found in a plant cell but not typically in an animal cell?

• Cell membrane and nucleus

• Cytoplasm and vacuole

• Cell wall and chloroplasts

• Mitochondria and ribosomes

What is the function of the nucleus in a cell?

• To produce energy

• To control cell activities

• To store water

• To carry out photosynthesis

What is the role of the cell membrane?

• To provide support to the cell

• To control what enters and leaves the cell

• To store food

• To carry out photosynthesis

Which specialized cell is adapted for absorbing water and minerals from the soil?

• Nerve cell

• Muscle cell

• Root hair cell

• Red blood cell

How is a root hair cell specialized for its function?

• It has a thick cell wall to provide support.

• It has a large surface area due to its projection.

• It contains many chloroplasts for photosynthesis.

• It has a streamlined shape for movement.

What is the main function of a nerve cell?

• To transport oxygen

• To carry messages or electrical signals

• To fight infection

• To store energy

Which part of a nerve cell helps it to receive signals from other cells?

• Axon

• Myelin sheath

• Dendrites

• Nucleus

How are nerve cells specialized for their function?

• They have a rigid cell wall.

• They are long and thin, allowing them to transmit signals over distances.

• They contain a large central vacuole.

• They are able to photosynthesize.

What are the three main states of matter?

• Solid, liquid, and plasma

• Solid, liquid, and gas

• Liquid, gas, and vapor

• Solid, gas, and steam