Question 1
Potato cylinders were left in sucrose solutions of different concentrations for two hours. The graph shows the percentage change in their mass. Which solution has the same water concentration as the potato cells?
The National 5 Biology multiple-choice section
20 questions, one mark each, from all three areas of the course.
| Questions | 20, one mark each |
|---|---|
| Share of the paper | 20 of 80 marks |
| Covers | All three areas of the course |
Where it trips people
- Which way water moves in osmosis, and what happens to plant and animal cells.
- Percentage change: dividing by the starting value.
- Reading a graph's axes and units before its line.
Try 2 questions
Question 2
The diagram shows the heart seen from the front. P is the lower chamber on the right-hand side of the diagram, and Q is the large vessel that leaves P. Which row names P and Q?
Next step
Questions people ask
How many marks is each question?
One. Section 1 has 20 questions and 20 marks.