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Describe how an action potential is carried across a synapse between to neurons.

Once the action potential reaches the pre-synaptic bulb, the change in membrane potential triggers the opening of voltage-gated calcium channels to allow calcium to enter the cell. The influx of calcium trig...
SA
Answered by Sam A. • Biology tutor
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Explain the concept of natural selection. Give an example.

Natural selection is a theory that became popular after Charles Darwin work and states that traits of living organisms are selected according to their ability to adapt to the environment. It implies that eve...
JF
Answered by Jessica F. • Biology tutor
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What is eutrophication?

Eutrophication is a result of nitrogen rich compounds leeching from farm land fertilizer/manure or other pollution methods to the river water ecosystem. The all of a sudden nitrogen rich environment in the r...
FS
Answered by Festus S. • Biology tutor
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Explain the concepts of primary, secondary, tertiary and quaternary

A protein's function is determined by its structure. The structure of a protein can be described in four different ways, the most basic of which is the primary structure. Proteins are made up of polypeptide ...
ME
Answered by Matt E. • Biology tutor
8952 Views

What is a disaccharide

A saccharide composed of two sugars. For example lactose is a disaccharide as it contains glucose ( a monosaccharide) and galactose (another monosaccharide) connected by a glycosidic bond
AP
Answered by Asya P. • Biology tutor
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