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How does myelination impact the rate of nervous impulse conduction, include examples

Myelination increases the speed of nervous impulse conduction. Allows saltatory conduction - the impulse can jump from node (of ranvier) to node, rather than travelling continuously which takes longer. Examp...
JA
Answered by Janita A. • Biology tutor
3229 Views

Discuss how cholesterol is transported in the body, and describe these transport molecules.

Cholesterol, like other lipids, is insoluble in water. Therefore, it is transported in the blood in lipoproteins. These are spheres of lipid and protein, and are made in the liver. There are two types of lip...
NC
Answered by Nabeelah C. • Biology tutor
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How do you structure an answer when describing a process such as the Kreb's Cycle?

Work chronologically, as you go through each step ask yourself, what, why , where , how questions?What is involved? - Pyruvic acid is converted to Acetly co-enzyme AWhy does it react?/ What conditions are ne...
MF
Answered by Maegen F. • Biology tutor
2610 Views

Describe how sucrose is loaded into the phloem (3)

Hydrogen ions are pumped out of companion cells using ATP.This creates a high concentration of hydrogen ions outside of the companion cell. H+ ions diffuse down their concentration gradient back into the com...
DR
8801 Views

Describe the differences between DNA and RNA. (3 marks)

Any 3 from:DNA is double stranded, whereas RNA is single strandedDNA consists of Deoxyribose sugar, whereas RNA is made from Ribose sugarThymine can be found in DNA, whereas it is replaced by Uracil in RNADN...
Answered by • Biology tutor
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