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Biology
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Describe the process of translation

Transcription is the first stage of protein synthesis. It involved the formation of primary mRNA. Transcription begins with a section of DNA within the nucleus unwinding using enzyme DNA helicase. This se...

JB
Answered by Jaydeep B. Biology tutor
4820 Views

What is ocean acidification?

Ocean acidification is caused by the chemical reaction of CO2 dissolving into seawater, where it immediately dissociates into carbonic acid and then into bicarbonate and hydrogen ions which decreases the ...

LS
Answered by Lulu S. Biology tutor
1174 Views

Describe and explain how the lungs are adapted to allow rapid exchange of oxygen between the air in the alveoli and blood in the capillaries around them. (5 marks)

The lungs have million of alveoli which increases the surface area, therefore increasing the rate of diffusion of oxygen into the lungs. The alveoli are very thin...

AZ
Answered by Aysha Z. Biology tutor
12408 Views

Describe the pressure and volume changes in the lungs during inspiration

During inspiration, the intercostal muscles contract, moving the sternum up and out. This increases the thoracic volume, hence decreasing the pressure. The pressure gradient set up causes air inflow from ...

DN
Answered by Dhaval N. Biology tutor
3585 Views

Describe the trends in predator and prey populations seen within a community in an ecosystem

Prey population size increases when there are enough resources available for food. When prey populations increase, the predator population size also increases, as this means there is more food available f...

OC
Answered by Olivia C. Biology tutor
6705 Views

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