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Osmosis is the diffusion of water molecules (1 mark) from a region of high particle concentration (1 mark) to a region of low particle concentration (1 mark), through a partially permeable membrane (1 mar...
When high levels of glucose in the blood are detected, insulin is released from beta cells in the islets of Langerhan in the pancreas.Insulin then binds to insulin receptors of cells, which causes an incr...
The heart is a muscular pump. It can be divided into 4 chambers: 2 atria and 2 ventricles. Each atrium is connected to its ventricle by a small opening. This opening is covered by a valve, which guards th...
(This is an 'evaluate' questions, which means just listing the pros and cons may not be enough, you should attempt to give a short explanation as to why breastfeeding is beneficial and why it may have dow...
The cell cycle is divided into interphase and mitotic phase (and cytokinesis). Interphase occupies most of the cell cycle (90% in mammals) and can be ref...
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