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Describe how water moves from the roots to the leaves

The xylem tissue that runs from the roots to the leaves draws water up from the roots as water evaporates from the leaves. This process is called transpiration it is how water is replaced when water evaporat...
Answered by • Biology tutor
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What are monoclonal antibodies and how are they used in treatment?

Monoclonal antibodies are antibodies artificially derived from a single B cell clone (i.e. specific antibodies)An animal (typically a mouse) is injected with an antigen and produces antigen-specific plasma c...
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Answered by Maxime G. • Biology tutor
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Explain how a reflex action is coordinated

A reflex action is a way for the body to automatically and rapidly respond to a stimulus. It is able to work so fast because it bypasses the brain. The process is as follows:The stimulus (e.g Pressure, Tempe...
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Answered by Harry E. • Biology tutor
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Define the different types of reproduction and list the advantages of each type of reproduction.

Asexual reproduction: only needs one parent and uses the process of mitosis to create identical copies (clones) of the parent cellSexual reproduction: two parents are needed in sexual reproduction and uses t...
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Answered by Lucy M. • Biology tutor
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Describe what happens at a synapse.

An action potential (electrical impulse) arrives at a synapse (a gap between two neurones) which causes calcium voltage-dependent gates to open in the presynaptic neurone. An influx of calcium ions triggers ...
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Answered by dana A. • Biology tutor
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