A student carried out two tests on a liquid. When Benedict's solution was added to half of the liquid and heated, it turned red. When biuret reagent was added to the rest of the liquid, it turned mauve (purple). Which conclusion is correct?

Which table states the tests for different food groups?

What are the basic units from which molecules of glycogen and of protein are synthesised?

The table shows where different components of food are digested in the alimentary canal. Which option states where p…

A diploid cell produces further cells with a haploid number of chromosomes. Which type of cell division is involved a…

Which row correctly pairs a hormone with its function in the menstrual cycle?

Genetic engineering can be used to introduce new characteristics into animals and plants. Which characteristic is not…