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How is information transmitted across a chemical synapse?

By neurotransmitters. At a neuromuscular junction, the neurotransmitter is Acetylcholine released from vesicles in the pre-synaptic neurone. Receptors on the muscle cell surface bind acetylcholine in the pro...
UO
Answered by Uchenna O. • Biology tutor
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What is a synapse?

In the nervous system, information is carried by electrical impulses from sensory neurons to the brain, from the brain to motor neurons, and within the neurons of the brain itself. A synapse is a connection ...
RH
Answered by Robert H. • Biology tutor
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Give 3 differences in structure between DNA and mRNA

DNA contains the nucleotide base thymine whereas mRNA contains the nucleotide base uracil instead DNA is double stranded, mRNA is single stranded DNA contains the sugar subunit deoxyribose, mRNA contains the...
CB
Answered by Callum B. • Biology tutor
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Use a genetic diagram to work out the probability that the offspring have cystic fibrosis if both parents are carriers.

CF is a homozygous recessive condition. This means that it is inherited, ie a child gets the condition by the genetic material passed on to it from its parents. Let's call the faulty allele f (which is also ...
EG
Answered by Eksha G. • Biology tutor
4240 Views

What does the DNA sequence being 'degenerate' mean?

Amino acids are coded for by specific codons. There are some instances where some particular amino acids can be coded for by more than one codon (codon being three nucleotides bonded together). This is known...
BN
Answered by Bibi N. • Biology tutor
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