The Stomach (OCR GCSE Biology A (Gateway Science Suite)): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
ShowHide
Practise the questions
12 questions from this quiz
What shape is the stomach?
What shape is the stomach?
J-shaped
What is the process called when the stomach mixes food with digestive juices?
What is the process called when the stomach mixes food with digestive juices?
Churning
Which THREE substances make up gastric juice?
Which THREE substances make up gastric juice?
HCl, pepsin, and mucus
What does the hydrochloric acid in the stomach kill?
What does the hydrochloric acid in the stomach kill?
Bacteria and pathogens
What type of enzyme is pepsin?
What type of enzyme is pepsin?
Protease
What is the main function of mucus in the stomach?
What is the main function of mucus in the stomach?
Prevents stomach digesting itself
What is chyme?
What is chyme?
Semi-liquid food from the stomach
What activates pepsinogen to become pepsin?
What activates pepsinogen to become pepsin?
Acidic environment
Which valve does food pass through to enter the stomach from the oesophagus?
Which valve does food pass through to enter the stomach from the oesophagus?
Lower oesophageal sphincter
What is the duodenum?
What is the duodenum?
First part of small intestine
Through which valve does chyme leave the stomach?
Through which valve does chyme leave the stomach?
Pyloric sphincter
What does hydrochloric acid provide for pepsin?
What does hydrochloric acid provide for pepsin?
Optimal pH