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B3 Enzymes & Digestion (AQA GCSE Combined)
Quiz by Mr R Horn
Tag the questions with any skills you have. Your dashboard will track each student's mastery of each skill.
What is the name of the 'model' that explains how enzymes work ?
Lock and key model
Product model
Substrate model
Active site model
What name is given to the molecule/substance that an enzyme acts on?
Lock and key model
Substrate
Product
Active site
What is the name of the 'model' that explains how enzymes work ?
What name is given to the molecule/substance that an enzyme acts on?
Each type of enzyme only acts on one substance/molecule (substrate).
e.g. amylase only works on starch;
lipase only works of lipids (fats and oils)
What name is given to the part of an enzyme where the substrate binds ?
Enzymes are specific. Each type of enzyme only acts on one substance/molecule (substrate).
Why are enzymes specific?
At high temperatures enzymes lose their shape (permanently) and stop working.
What word is used to describe these non-functioning enzymes?
What keyword means: 'two shapes that fit together perfectly'?
eg1 like a key fits in a lock;
eg2 like the substrate fits in the active site
At high temperatures enzymes lose their shape (permanently) and stop working.
What word is used to describe these non-functioning enzymes?
What keyword means: 'two shapes that fit together perfectly'?
eg1 like a key fits in a lock;
eg2 like the substrate fits in the active site
How does hydrochloric acid help with the digestion of food in the stomach?
Which enzyme, A, B or C is found in the stomach?
Which structure is the stomach?
Which structures produce the enzyme amylase?
Which structure is the ‘liver’?
Which structure produces bile?
Which structure is the small intestine?
Which structure is the pancreas?
Milk contains lipids (fat).
If you add lipase enzyme to milk, what will happen to the pH and why?
What is the optimum pH for the enzyme, shown in the graph?
Which is the best description of the plot line from 10-30oC ?
Which is the best explanation of the plot line from 10-30oC ?
Above temperatures 40oC the rate of reaction decreases because at high temperatures enzymes are .…?….