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The chromosomes condense and the nuclear membrane breaks down and the nucleolus disappears.
The electrical signal arrives at the first neuron. Neurotransmitters are released into cleft.They diffuse across the cleft and bind to receptors on the 2nd neuron.Electrical impulse is generated in second...
Changes in blood water levels are detected by the hypothalamus through the negative feedback mechanism in homeostasis (2 marks). The pituitary gland releases anti-diuretic hormone into the bloodstream as ...
Red blood cells transport oxygen around the body via the circulatory system and are the most common cell in the blood. They carry a special protein called hemoglobin which binds to oxygen, allowing it to ...
Eukaryotic cells contain mitochondrion, to produce energy for the cellA nuclear membrane to contain the DNA strands which control the cellCytoskeleton for the movement of molecules and to aid with stabili...
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