Biology EOY revision

• True or False: Food is digested in the stomach and intestine

  True
• Why do we need to chew our food and mix it with saliva?

  To make it easier to swallow and to digest food
• Bad habit to organ:

  
  

  Which organ is affected by NOT eating enough fibre?

  
  

  A: Liver

  B: Lung

  C: Ribs

  D: Intestine

  D: Intestine
• Bad habit to organ:

  
  

  Which organ is affected by smoking cigarettes?

  
  

  A: Liver

  B: Lung

  C: Ribs

  D: Intestine

  B: Lung
• Bad habit to organ:

  
  

  Which organ is affected by drinking too much alcohol?

  
  

  A: Liver

  B: Lung

  C: Ribs

  D: Intestine

  A: Liver
• Which organ can be harmed if we eat too much fat?

  
  

  A: Heart

  B: Brain

  C: Ribs

  D: Lung

  A: Heart
• Which organ is affected by not eating enough calcium?

  Bones
• Which nutrient is needed for growth and repair?

  Protein
• Describe how the products of digestion get from the small intestine to the cells in the rest of the body.

  -> They pass through the intestine wall

  -> Then they are carried by blood
• What kind of substance is a catalyst for digestion?

  An enzyme
• How does an increase in temperature affect an enzyme?

  A temperature increase will speed up the reaction of the enzyme
• A balanced diet includes all of the substances in the following list:

  Starch Fat Fibre Minerals Protein Vitamins

  
  

  Give the names of TWO substances in the list which are ABSORBED into the BLOOD WITHOUT being DIGESTED.

  -> Minerals

  -> Vitamins
• What is the function of the nucleus?

  Controls the cell and contains DNA
• A balanced diet includes all of the substances in the following list:

  Starch Fat Fibre Minerals Protein Vitamins

  
  

  Which substance in this list passes through the BODY without being digested?

  -> Fibre
• What happens to a molecule of protein during digestion?

  It is broken down by amino acids
• Where is the sperm cell produced?

  Testis
• Where is the egg cell produced?

  Ovary
• What is the name of the process where a sperm cell and an egg cell fuse?

  Fertilisation
• Which word means unborn baby?

  Foetus
• Where does an unborn baby develop?

  Uterus
• What is the function of chloroplast?

  To carry out photosynthesis and contain a green pigment
• What is the function of the cell membrane?


  Controls what goes in and out of the cell
• What is the function of the cytoplasm?

  Where most chemical reactions take place
• What is the function of the chromosome?

  Where there are genes
• True or False:

  
  

  Oxygen will move FASTER in a cell with the biggest difference between CONCENTRATION from the inside and the outside?


  True
• Oxygen is taen into the cell by the process of ____________

  
  

  A: Respiration

  B: Diffusion

  C: Digestion

  B: Diffusion
• What is the function of the cell wall?

  Strengthens the cell