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The cell membrane is a semi-permeable structure that surrounds a cell and it is present in plant, animal and bacteria cells. It is semi-permeable because some substances such as glucose and water can pass...
Photosynthesis is an endothermic reaction- energy is added (endo-in, exo-exit)H2O + CO2 ==> C6H12O6 + O2Photosynthesis is a proce...
The human heart is described as a double pump because blood passes through it and gets pumped out of it twice in a single circuit of the circulatory system. A normal heart is separated into two halves, ri...
It controls what enters and leaves the cell.
Synapses are the junctions between neurons. An electrical impulse travels down the first neuron and arrives at the presynaptic membrane. The presence of an electrical impulse causes chemicals called neuro...
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