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Biology
A Level

What is a myocardial infarction and how is it treated?

A myocardial infarction is a fancy term for a heart attack, which is a common life threatening condition. Just splitting the name up tells us whats happening beneath the surface. Myo means muscle, Cardial...

HA
Answered by Haroon A. Biology tutor
5358 Views

How is mRNA produced in the nucleus of a cell

Helicase breaks hydrogen bonds between the 2 DNA strands to separate them1 DNA strand acts as template (the sense strand)Free RNA nucleotides then attach to exposed complementary bases on the sense strand...

KL
Answered by Ka L. Biology tutor
3633 Views

How are proteins synthesised?

Proteins are coded for by genes (a sequence of DNA that codes for a specific polypeptide), in the nucleus the DNA is unwound by an enzyme and then another enzyme with copy the template strand to make a mo...

BR
Answered by Billy R. Biology tutor
2644 Views

Why do insulin levels rise in the body following a meal, and what effects does the insulin have?

a) Why do insulin levels rise? After we have eaten, the carbohydrates in the food are broken down to glucose, which is absorbed in our intestines. This means that the level of glucose in our blood rises a...

TD
2643 Views

Can you explain to me what the Golgi apparatus does?

Golgi ApparatusInvolved in protein and lipid modification by addition of sugar groups Involved in sorting and packaging of proteins and lipidsInvolved in vesicular transport, which is moving substances wh...

CB
Answered by Chiranth B. Biology tutor
2875 Views

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