What are Enzymes and what do they do?
Enzyme Action, Activity and Nutrition
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Drag and drop to match the term with the description
- Enzyme specificity
- Enzyme activity
- Active site
- Enzymes catalyse unique reactions
- Efficiency of catalysis
- Where substrate binds and reaction takes place
- Molecules that change in a reaction
What is the Lock and Key Model of enzyme action?CorrectIncorrect
What is the Induced Fit Model of enzyme action?CorrectIncorrect
Why is catalysis by enzymes important for life processes?CorrectIncorrect
Why is the rate of an enzyme-controlled reaction highest at an optimum pH?CorrectIncorrect
Why does the rate of an enzyme-controlled reaction go down as temperature increases past the optimum level?CorrectIncorrect
Why is the rate of an enzyme-controlled reaction lower at lower temperatures?CorrectIncorrect
Why does the rate of an enzyme-controlled reaction increase with greater substrate concentration?CorrectIncorrect
Why does the rate of an enzyme-controlled reaction plateau at a certain substrate concentration?CorrectIncorrect
Drag and drop to match the monomers with their polymers
- Fatty acids/glycerol
- Amino acids
Drag and drop to match the enzymes with the polymer they break down
Carbohydrases (including amylase), proteases and lipases are all produced in the same organ. What is this organ called?CorrectIncorrect
Use some of the following words to fill in the blanks.
Important, polymers, active, inactive, special, bonds, monomers
Complete the statements about enzyme action:
- Enzymes interact with substrates to either break down large molecules known as into smaller ones known as .
- Alternatively, they put small molecules together into larger ones.
- This happens when the site of the enzyme connects with the substrate.
- When making larger molecules from smaller ones, the enzyme holds the molecules together in the correct position while form.
When the shape of an active site is changed, we say it has what?CorrectIncorrect
Carbohydrates, quadrats, catalysts, chemicals, proteins
Complete the sentence: Enzymes are that act as biological .
An enzyme is used to break down starch into small sugars. The following graph shows how the rate of reaction changes over time. The y-axis represents the amount of starch digested. Fill in the blanks to show the correct rate of reaction at each temperature.
Enter your estimate into the blanks below. Use whole numbers and no decimals.
40˚C – g/min
60˚C – g/min
80˚C – g/min
An experiment is conducted to measure the rate of reaction of the enzyme starch synthase. 720g of starch was synthesised in 120s. Calculate the rate of reaction in g/min.
Enzymes are important for living organisms to survive. Fill in the blanks to explain why they are so important for the digestive system to function properly.
Use the following words:
- The digestive system breaks down large polymers into smaller monomers.
- Once the materials we need to build our bodies and complete processes like respiration are , they can be absorbed into our blood through our intestines.