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Give two ways in which the structure of starch and cellulose are similar and different to one another.

Two ways in which both starch and cellulose are similar in regards to structure are that they are both made up of monosaccharides and contain glucose.Two ways in which starch and cellulose differ in structur...
NH
Answered by Nadia H. • Biology tutor
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Using your knowledge of natural selection and speciation, suggest how new species can evolve from the same common ancestor.

Speciation requires reproductive isolation. This is where the members of different populations are unable to interbreed to produce fertile offspring.Reproductive isolation could have been caused by a physica...
Answered by • Biology tutor
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What is the role of ADH in the regulation of water in the body (osmoregulation)?

ADH (anti-diuretic hormone) is released by the pituitary gland in the brain. Differing amounts of ADH are secreted by the pituitary gland depending on the concentration of water in the blood plasma, which is...
LM
Answered by Laura M. • Biology tutor
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How may nitrate from fertiliser entering lakes cause the death of fish in fresh water?

The addition of excess nitrate to the freshwater body causes algal bloom on the surface, blocking sunlight. This reduces the photosynthetic activity of submerged plants, causing them to die. Subsequently, th...
CM
Answered by Cocoa M. • Biology tutor
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How is a sperm cell adapted to its role?

Since the sperm cell's role is to swim to the egg and fertilise it, it requires a tail for movement. The middle piece is full of mitochondria to provide energy so that the sperm cell can swim and reach the e...
PB
Answered by Patricia B. • Biology tutor
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