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Define a gene

The basic unit of genetic material inherited from our parents - it is a short section of DNA.

Answered by Alexandria G. • Biology tutor

2843 Views

Describe the measures the body takes to achieve homeostasis in response to temperature changes

The body is able to utilise a number of measures in order to maintain an optimum body temperature of around 37 degrees celsius. Firstly, capillaries close to the skin surface are able to vasodilate (expan...

Answered by Adam B. • Biology tutor

2750 Views

Describe the synaptic transmission of a nerve impulse at the neuromuscular junction

As an action potential arrives at the presynaptic terminal, a depolarisation of the motor neuron membrane occurs which initiates the opening of voltage-gated Ca²⁺ion channels - releasing Ca

Answered by Adam B. • Biology tutor

7519 Views

What are Stem Cells?

Stem cells are (pluripotent) undifferentiated cells that can differentiate into specialised cell types / tissues. Future medical uses involve growing organs from a patients OWN stem cells = zero chance of...

Answered by Sophie P. • Biology tutor

2802 Views

Explain synaptic transmission at a cholinergic synapse.

A synapse is a gap between neurons that allows communication between different neurons using chemical messengers or neurotransmitters. Let's start simple and describe the...

Answered by Maaz M. • Biology tutor

8196 Views