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Why does the mass of a potato chip decrease after it is left in a concentrated sugar solution?

The water potential of the concentrated sugar solution is much lower than the water potential inside the cells of the potato chip. Therefore, the water molecules move down a concentration gradient out of the...
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Answered by Tasneem M. • Biology tutor
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What are three adaptations in a leaf for photosynthesis?

Thin waxy cuticle - to protect the leaf without blocking the lightThin transparent epidermis - to allow more light to reach the palisade cellsLayers of palisade cells on the top surface - to absorb light
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Explain how the properties of water are significant to living organisms.

Water is the medium of life. Its four key properties - thermal properties, ability to act as a universal solvent, cohesion and adhesion - help support the life processes and habitats of virtually all organis...
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Describe the requirements, process and applications for Polymerase Chain Reaction (PCR)

Requirements· Original DNA sample (to be amplified)· dNTPS (4 DNA nucleotide bases)· Thermal cycler (reaction vessel)· Buffer solution (to maintain stable pH)· Taq Polymerase· DNA primers (forward and revers...
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Answered by Verity L. • Biology tutor
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Explain how oxygen is loaded, transported and unloaded in red blood cells

Haemoglobin is a molecule in red blood cells with a high affinity for oxygen. It consists of 4 haem groups, each of which associate with one oxygen molecule at high pO 2 , typically in the lungs. Haemoglobin...
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