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Blood is primarily used to transport cells and different substances around the body. It can be divided into 4 categories of components: the blood plasma, trombocytes (platelets), leukocutes (white blood c...

This is a two mark question so we need two points. Firstly doctors should only prescribe antibiotics for a confirmed bacterial infection, antibiotics won't work on viruses and if given may allow commensal...

Only plant cells have a cell wall, vacuole, chloroplasts.

Both plant and animal cells have a cytoplasm, cell membrane, mitochondria, nucleus, ribosomes and chromosomes.

We can break down the process of natural selection into a few steps: genetic variation within a population, a selective pressure which favours a particular trait, increased survival and therefore reproduc...

<p>There are two types of respiration that you need to know about - aerobic and anaerobic respiration. The main difference between the two types of respiration depend on whether oxygen is available ...