The Human Digestive System (AQA GCSE Biology Combined Science): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
ShowHide
Practise the questions
10 questions from this quiz
Why does food need to be broken down in the digestive system?
Why does food need to be broken down in the digestive system?
To make it smaller and soluble
What are the two main purposes of hydrochloric acid in the stomach?
What are the two main purposes of hydrochloric acid in the stomach?
Kills bacteria & creates acidic pH
What is the main function of the small intestine?
What is the main function of the small intestine?
Absorption of soluble molecules
Which organ produces bile?
Which organ produces bile?
Liver
What does the large intestine absorb from undigested food?
What does the large intestine absorb from undigested food?
Water
What is the optimum temperature for most enzymes in the human body?
What is the optimum temperature for most enzymes in the human body?
What is the active site of an enzyme?
What is the active site of an enzyme?
Where the substrate binds
What does amylase break down?
What does amylase break down?
Starch into maltose
Which type of enzyme converts proteins into amino acids?
Which type of enzyme converts proteins into amino acids?
Proteases
What colour change indicates a positive iodine test for starch?
What colour change indicates a positive iodine test for starch?
Blue-black