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What is hydrogen bonding?

Hydrogen bonding is a type of chemical interaction, or bond, that occurs between certain types of molecules. Hydrogen bonding relies on a chemical concept known as polarity . Just as the name suggests, polar...
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Answered by Anya L. • Biology tutor
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Explain the difference in function of auxins in plant shoots and roots.

Auxins are plant growth hormones found in both the roots and shoots of plants, in the shoots they promote growth whereas in the roots they inhibit it. In the shoots they cause cell elongation in the side of ...
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Answered by Eve L. • Biology tutor
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What is the structure and function of the chloroplast?

Function: The chloroplast is a plant organelle that conducts photosynthesis . The photosynthetic pigment chlorophyll captures energy from sunlight and converts it to the energy-storage molecules ATP and NADP...
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Answered by Anya L. • Biology tutor
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Describe how animals survive adverse weather conditions

One method of doing this is dormancy. Some animals spend a period of their life cycle dormant in order to lower their metabolic expenditure in conditions which would otherwise require high energy to survive....
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Answered by Jenni M. • Biology tutor
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Resistance to antibiotics is increasing. How can we help prevent antibiotic resistance developing? (2 marks)

1 mark up to a total of 2 from: Doctors should not over prescribe antibiotics, e.g. for viral illness such as the common cold. Patients should ensure they complete their full antibiotic prescription, even if...
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Answered by Harry G. • Biology tutor
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