Biological molecules and enzymes quiz for O-Level Biology (SEAB 6093) quiz
14questions. Pick an answer and you'll see why right away.
Which chemical element is found in proteins but not in carbohydrates or fats?
What are the building blocks of fats (lipids)?
What is the correct definition of an enzyme?
In the lock and key model, what does the lock represent?
Why is each enzyme described as specific?
What happens to an enzyme when it is heated well above its optimum temperature?
What is the optimum temperature for most human enzymes?
A reaction catalysed by an enzyme slows down when the solution is made strongly acidic. What is the best explanation?
Which reagent and colour change correctly test for starch?
Which step is essential when testing for a reducing sugar with Benedict's solution?
What colour change shows that protein is present when biuret solution is added?
Which result indicates that fat is present in the ethanol emulsion test?
Why can a small amount of enzyme catalyse a large amount of substrate?
Which role is correctly matched to its food molecule?