4 marksFoundationRequired practical 034.2.2.1 The human digestive system
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 marksFoundation4.3.1.6 Human defence systems4.3.1.5 Protist diseases
The human body has several ways of stopping pathogens entering.
.1How does the nose help to stop pathogens entering the body?
[1 mark] .2The stomach helps to defend the body against pathogens.
Name the substance the stomach produces that kills pathogens.
[1 mark] .3Malaria is caused by a protist. How is it passed from person to person?
[1 mark] 3 marksFoundation4.4.2.1 Aerobic and anaerobic respiration
Respiration happens continuously in living cells.
.1Which word equation shows aerobic respiration?
[1 mark] .2During hard exercise, muscle cells respire anaerobically. What do they produce?
[1 mark] .3Why do all living cells respire?
[1 mark] 2 marksFoundation4.3.1.9 Discovery and development of drugs
Many drugs were first found in plants or microorganisms.
.1Penicillin was discovered by Alexander Fleming. Where does penicillin come from?
[1 mark] .2A new drug is tested before it can be prescribed. Put the stages in order, starting with the first.
[1 mark] 4 marksFoundation4.1.3.1 Diffusion4.1.3.3 Active transport
Substances move into and out of cells by diffusion, osmosis and active transport.
.1Which statement describes diffusion?
[1 mark] .2Which two changes would increase the rate of diffusion of oxygen into a cell? Tick two boxes.
[2 marks] .3Root hair cells take in mineral ions from very dilute soil water. Which process do they use?
[1 mark] 