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Describe the events that take place at the synapse that enable transmission of a nerve impulse.

An action potential arrives at the synapse, triggering Ca2+ channels to open. This in turn triggers vesicles holding neurotransmitter to fuse with the presynaptic membrane, releasing the neurotransmitter int...
SA
Answered by Shrinivas A. • Biology tutor
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What do arteries veins and capillaries do?

Arteries, veins and capillaries are the three types of blood vessels in our bodies. We need blood vessels to carry our blood around the body. The importance of blood Blood has to be circulated around the bod...
CM
Answered by Charlotte M. • Biology tutor
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What is the sliding filament theory of muscle contraction?

There are two main muscle filaments in muscle fibres: Actin and myosin filaments . Actin filaments are thin and have binding sites for the globular heads of myosin filaments. Myosin filaments are thick and f...
KF
Answered by Kasia F. • Biology tutor
28447 Views

What does sex linkage mean?

Sex linkage refers to when certain alleles affect one gender more than the other. Men tend to be affected by some genetic disorders more than women. This is because some alleles for genetic disorders are car...
AS
Answered by Amy S. • Biology tutor
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List two reasons drugs to treat illness are often trialled

Accept any two from: Toxicity Dosage Efficacy side effects
CB
Answered by Charlotte B. • Biology tutor
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