The Stomach (AQA GCSE Biology): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What is the shape of the stomach?
What is the shape of the stomach?
J-shaped
What is the term for the process where the stomach's muscular walls mix food with digestive juices?
What is the term for the process where the stomach's muscular walls mix food with digestive juices?
Churning
Which three substances make up gastric juice?
Which three substances make up gastric juice?
HCl, pepsin, and mucus
What is one role of hydrochloric acid in the stomach?
What is one role of hydrochloric acid in the stomach?
Kill bacteria and pathogens in food
What type of enzyme is pepsin?
What type of enzyme is pepsin?
Protease
What does pepsin break proteins down into?
What does pepsin break proteins down into?
Smaller peptides
What is the inactive form of pepsin called?
What is the inactive form of pepsin called?
Pepsinogen
What is the main function of mucus in the stomach?
What is the main function of mucus in the stomach?
Protect lining from acid damage
What is the semi-liquid form of food produced by the stomach called?
What is the semi-liquid form of food produced by the stomach called?
Chyme
How does the acidic environment help protein digestion?
How does the acidic environment help protein digestion?
It denatures proteins
Which valve controls food entry from the oesophagus into the stomach?
Which valve controls food entry from the oesophagus into the stomach?
Lower oesophageal sphincter
Through which structure does chyme leave the stomach?
Through which structure does chyme leave the stomach?
Pyloric sphincter