Question Constellation Sign up for free AQA · GCSE · Biology · Higher
Variables in the Bread Investigation
A student investigated three types of bread. For each type of bread, the student:
- put a square piece of bread into their mouth
- did not chew the bread
- recorded the time taken for the bread to taste sweet
Table 2 shows the results.
| Type of bread | Time taken for bread to taste sweet in seconds |
|---|---|
| Brown | 43 |
| White | 35 |
| Wholemeal | 57 |
What was the dependent variable in the investigation?
Write your answer first. You can study the marking guidance whenever you need it.
Study the marking See what earns credit and compare it with a full-mark answer.
Marking points
- 1 Identifies the measured time taken for the bread to taste or become sweet.
Full-mark answer
The time taken for the bread to taste sweet, measured in seconds.
Why this answer loses marks
The type of bread.
That is an input or category, not the outcome recorded during tasting.