Y7 Science EOY revision quiz

What is a cell?

• A part of the human body

• The smallest and most basic unit of life

• A type of element

• A non living organism

What is the job of a cell membrane?

• To give them a strong shape

• To make food

• To control the entry and exit of substances

• To release energy

Why do very active cells have lots of mitochondria?

• Mitochondria release energy to power cells

• Mitochondria help cells to divide in two

• Mitochondria help give the cell their shape

• Mitochondria make hormones

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This organelle protects/holds the DNA

• Mitochondria
• Chloroplasts
• Nucleolus
• Nucleus

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This organelle traps sunlight and uses that energy to convert it to food.

• Mitochondria
• Chloroplasts
• Lysosomes
• Chlorophyll

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What is the function of nerve cells?

• Allow for gas exchange to happen.

• Transport oxygen throughout the body.

• Control DNA expression.

• Transmit electrical signals to different parts of the body.

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Which part of the cell carries out respiration (makes energy from glucose)?

• Cell Wall

• Nucleus

• Mitochondria

• Cell Membrane

Animal cells do not need a cell wall because...

• Animals have bones and muscles to help them stay upright

• Animal cells are bigger

• Animal cells have a cell membrane instead

How is this cell specialised?

• Tail for swimming

• Small so it can fit through gaps

• Lots of mitochondria for energy

• Enzymes in the head to break through egg

How are these cells specialised?

• Red so they are easy to see

• No nucleus so more room for oxygen

• Bendy so they can fit through capillaries

• Hard to break