N(A)-Level Combined Science, Biology: Plants and Nutrition module quiz (SEAB 5106/5107) quiz
14questions. Pick an answer and you'll see why right away.
What is an enzyme?
Why is each enzyme specific to one substrate?
What happens to an enzyme above its optimum temperature?
Why does enzyme activity increase as temperature rises towards the optimum?
Which solution is used to test for starch, and what colour change shows a positive result?
Which test gives a brick-red precipitate when heated with a reducing sugar such as glucose?
Which nutrient group is mainly needed for growth and repair of body tissues?
Which of these is the best description of a balanced diet?
What is the word equation for photosynthesis?
Which two things, besides carbon dioxide and water, does photosynthesis need?
Which feature helps a leaf absorb the most light for photosynthesis?
What is the role of stomata in a leaf?
An enzyme works fastest at pH 7. What is most likely at pH 2?
Which test detects the presence of fat in a food sample?