b1 practice qs

• what are two types of eukaryotic cell?

  animal and plant
• what type of cell are bacteria?

  Prokaryotic
• where is DNA found in animal and plant cells?

  nucleus
• What is the function of the cell membrane?


  Controls the movement of substances in and out of the cell
• What is the function of the mitochondria?

  site of respiration to transfer energy for the cell
• what is the function of chloroplasts?

  contain chlorophyll to absorb light energy for photosynthesis
• what is the function of ribosomes?

  enable production of proteins (protein synthesis)
• what is the function of the cell wall?


  Strengthens and supports the cell
• what is the structure of the main genetic material in a prokaryotic cell?


  single loop of DNA
• how are electron microscopes different to light microscopes?

  electron microscopes use beams of electrons instead of light, cannot be used to view living samples, are much more expensive and have a much higher magnification and resolution
• what is the function of a red blood cell?

  Carries oxygen around the body
• give three adaptations of a red blood cell

  No nucleus, contains a red pigment called haemoglobin, and has a bi-concave disc shape
• what is the function of a nerve cell?

  carries electrical impulses around the body
• Give two adaptations of a nerve cell.

  branched endings, myelin sheath insulates the axon
• what is the function of a sperm cell?

  fertilises an ovum (egg)
• Give two adaptations of a sperm cell.

  tail, contains lots of mitochondria
• what is the function of a palisade cell?


  carries out photosynthesis in a leaf
• give two adaptations of a palisade cell

  lots of chloroplasts, located at the top surface of the leaf
• what is the function of a root hair cell?

  absorbs minerals and water from the soil
• Give two adaptations of a root hair cell.

  long projection, lots of mitochondria