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Explain how guard cells are specialised for their specific function

Guard cells open and close the stomata in a leaf. When the plant has lots of water the guard cells fill with it and become plump and turgid. This makes the stomata open so gases can be exchanged for photosyn...
GK
Answered by Grace K. • Biology tutor
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Why will antibiotics not cure the flu? Why should they not be overused?

The Flu is caused by the Rhinovirus. Antibiotics can only kill bacteria not viruses as viruses have different machinery to survive and replicate. Antibiotics have nothing to target in Viruses. Overuse of ant...
Answered by • Biology tutor
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Describe the stages of mitosis.

ProphaseFirst, the chromosomes condense down which consists of sister chromatids.2. MetaphaseThen, each chromosome lines itself up at the equator of the cell in their homologous pairs.3. AnaphaseIn this stag...
Answered by • Biology tutor
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Can you name for four chambers of the human heart?

left atrium, right atrium, left ventricle, right ventricle
AJ
Answered by Ashley J. • Biology tutor
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Sodium atoms react with chlorine atoms to produce sodium chloride (NaCl). Describe what happens when a sodium atom reacts with a chlorine atom.

Sodium and chloride form an ionic bond. Therefore the sodium atom loses one electron from its outer shell and the chlorine atom gains one electron. As this happens, the electron is transferred from the sodiu...
DS
Answered by Dominic S. • Biology tutor
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