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Biology

A Level

How can high absorption of salt fro the diet leading to high salt concentration in local capillaries lead to build-up of tissue fluid?

High salt lowers the water potential of the tissue fluidLess water enters the capillaries at the venue end through osmosis
Remember - Osmosis is the transport of water from an area of higher concentr...

Answered by Christopher H. • Biology tutor

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Explain the process of DNA replication an state why it is called semi-conservative.

During DNA replication, DNA helicase attaches itself to the double stranded DNA and breaks the hydrogen bonds between the 2 strands. Next, free nucleotides pair with complementary bases on each strand of ...

Answered by Akthar Hussain M. • Biology tutor

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Outline the sequence of events following the production of extracellular proteins that leads to their release from the cell. [3]

keywords: outline sequence following production extracellular step 1) protien is folded by rough endoplasmic reticulum and re

Answered by Alia H. • Biology tutor

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Describe the primary and secondary structure of proteins

Primary structure:
Due to the bonding and the shape and chemical nature of different amino acids, the shape of a whole chain of amino acids (a polypeptide or protein) is

Answered by Katerina S. • Biology tutor

2168 Views

Outline the process of DNA replication

During DNA replication the double-stranded DNA helix is separated to single strands by the enzyme DNA helicase. This exposes the nucleic acid bases that encode the genetic sequence. Replication is then in...

Answered by Lorna W. • Biology tutor

2837 Views