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Biology
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Describe the differences between hydrophobic and hydrophilic signalling.

Hydrophobic signalling molecules can pass through the lipid bilayer of the membrane due to both being hydrphobic. Once within the cell, the molecule can bind to a receptor or transcription factor to inhib...

LA
Answered by Lindsey A. Biology tutor
9089 Views

What is the difference between aerobic and anaerobic respiration?

Aerobic respirtation is the process by which glucose and oxygen go to form carbon dioxide and water. The reaction occurs in the mitochondria. The process is needed to release energy. The chemical equation...

AH
Answered by Aiden H. Biology tutor
5097 Views

A company plan to produce GM mosquitoes which carry a gene that causes the death of offspring before reaching adulthood. Male mosquitoes do n't feed on blood, so scientists are planning on releasing millions of GM males. Do you think they should?

I will, through the format of a venn diagram or mind map, guide the student through brainstorming important points. I will pay particularly close attention to those listed in the Higher GCSE AQA 2017 Biol...

RL
Answered by Rhiannon L. Biology tutor
3918 Views

Describe how an antibody works?

Binding sites on the antibody are complementary to specific binding sites on antigen.  Antibodies group together/in groups of 5 (pentamers) and attach to antigen presenting pathogens, forming antigen-anti...

AP
Answered by Adam P. Biology tutor
2576 Views

Why is the control of insulin called "negative" feedback? How does it work?

Negative is a slightly confusing term, as it seems to imply that the control is bad, when in reality it is vital to being alive! Negative in this sense is used in a mathematical way, meaning "removin...

AP
Answered by Andrew P. Biology tutor
8201 Views

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