Lesson 4.2.2.1
4.2.2.1 The human digestive system Quiz: AQA Biology, Unit 2
20 questions
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Lesson 4.2.2.1, The human digestive system: 20 multiple choice questions for the AQA GCSE Biology (8461), Unit 2: Organisation, written with Revision Ninja.
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The 20 questions
-
What type of structure is the human digestive system?
- An organism
- An organ
- A tissue
- An organ system
-
What do digestive enzymes break large insoluble food molecules into?
- Digestive hormones
- Small soluble molecules
- Inorganic minerals
- Large insoluble polymers
-
Which enzyme breaks down starch?
- Lipase
- Protease
- Bile
- Amylase
-
Which enzyme breaks down proteins to amino acids?
- Amylase
- Lipase
- Protease
- Bile
-
Which enzyme breaks down lipids?
- Lipase
- Amylase
- Carbohydrase
- Protease
-
What are the products formed when lipids are digested by lipase?
- Fatty acids and glycerol
- Glucose molecules
- Amino acids
- Simple sugars
-
Which enzyme breaks down starch into simple sugars?
- Maltase
- Lipase
- Amylase
- Protease
-
Where in the human body is bile produced?
- Gall bladder
- Liver
- Pancreas
- Stomach
-
Why does bile neutralise stomach acid in the small intestine?
- It is acidic
- It contains enzymes
- It is alkaline
- It is neutral
-
What process by bile increases the surface area of lipids for lipase?
- Neutralisation
- Absorption
- Digestion
- Emulsification
-
Which region of an enzyme binds to a specific substrate molecule?
- Binding protein
- Active site
- Allosteric site
- Cell membrane
-
Which simplified model is used to explain enzyme action?
- Fluid mosaic
- Induced fit
- Double helix
- Lock and key
-
Which two organs produce the digestive enzyme amylase?
- Liver and small intestine
- Salivary glands and pancreas
- Stomach and liver
- Oesophagus and stomach
-
Which two factors directly affect the rate of enzyme activity?
- Volume and mass
- Light and pressure
- Temperature and pH
- Glucose and oxygen
-
In required practical 4, which test is used for protein?
- Ethanol test
- Benedict's test
- Biuret reagent
- Iodine test
-
In required practical 4, which reagent tests for starch?
- Ethanol
- Iodine reagent
- Benedict's solution
- Biuret reagent
-
In required practical 4, which test detects sugars?
- Ethanol test
- Benedict's test
- Biuret test
- Iodine test
-
How often is iodine solution sampled during the amylase rate practical?
- Every 5 minutes
- Every 30 seconds
- Every 2 minutes
- Every 10 seconds
-
What type of variable is temperature when investigating the effect of pH on amylase?
- Control variable
- Independent variable
- Dependent variable
- Categorical variable
-
What is the function of bile when stomach contents enter the small intestine?
- Protects stomach lining
- Acidifies digestive enzymes
- Emulsifies proteins
- Neutralises stomach acid
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