4 marksFoundation
A student tests some foods for starch, sugar and protein.
.1Which solution does the student use to test for starch?
[1 mark] .2The student heats a food with Benedict's solution. The food contains a lot of glucose.
What colour does the mixture turn?
[1 mark] .3Name the solution used to test for protein.
[1 mark] .4Suggest why the student heats the Benedict's test tubes in a water bath rather than directly over a Bunsen burner.
[1 mark] 3 marksFoundation
A leaf is a plant organ made of several tissues.
.1What is the main function of the palisade mesophyll tissue?
[1 mark] .2Name the tissue that carries water from the roots to the leaves.
[1 mark] .3What does phloem tissue transport?
[1 mark] 3 marksFoundation
A food chain on a farm is: grass → rabbit → fox.
.1What is the grass in this food chain?
[1 mark] .2What do the arrows in a food chain show?
[1 mark] .3In a stable community, what usually happens to the fox population after the rabbit population increases?
[1 mark] 4 marksFoundation
Automatic control systems keep conditions inside the body within narrow limits.
.1Put the parts of a control system in order, starting with the stimulus.
[1 mark] .2What is homeostasis?
[1 mark] .3Which two internal conditions are controlled by homeostasis? Tick two boxes.
[2 marks] 3 marksFoundation
Hormones are chemicals secreted by endocrine glands.
.1Name the gland in the brain that is often called the 'master gland'.
[1 mark] .2Which gland produces insulin?
[1 mark] .3How do hormones travel to their target organs?
[1 mark] 