Top answers

Biology
A Level

Why does a myelinated neurone have a faster conduction time than unmyelinated neurones?

Myelination allows saltatory conduction to occur, which is when the impulse 'jumps' along the axon using the nodes of Ranvier. The myelin also acts as an electrical insulator.

Answered by Sasha H. Biology tutor
2216 Views

Describe and explain the process of insulin secretion

Beta cells store insulin in vesiclesAt normal blood glucose concentration (BGC), K+ channels are open, so K+ can diffuse out of the cell to maintain the potential difference (PD) at -70mVWhen the BGC rise...

Answered by Summia H. Biology tutor
2326 Views

Describe the role of tRNA in the production of a protein

tRNA molecules transport a specific amino acid to a ribosome for translation of mRNA. A tRNA molecule carries an anti-codon (at the opposite end of the amino acid) that pairs wi...

Answered by Megan W. Biology tutor
7428 Views

What is a gene?

A gene is a specific section of a chromosome that codes for a particular sequence of amino acids to make a protein.

Answered by Biology tutor
2235 Views

How do you test for monosaccharides/disaccharides?

The Benedict's test allows you to test for monosaccharides/disaccharides (also known as reducing/non-reducing sugars).


You take a sample of the test solution and add Benedict's reagent to...

Answered by Biology tutor
12707 Views

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