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GCSE

How do we classify living organisms?

Traditionally we have classified living organisms into groups based on their structure and morphology (essentially how they look!). This was a system developed by a scientist called Linnaeus in the 1700's...

BP
Answered by Bryony P. Biology tutor
3348 Views

why do metallically bonded structures conduct electricity

In order for metals to bond they need to loose electrons to ensure that they have a full outer shell and become positively charged. The positive cations (metal ions) are attracted to the negatively charge...

LP
Answered by Lauren P. Chemistry tutor
3530 Views

Compare the differences between prokaryotic and eukaryotic cells.

Prokaryotic and eukaryotic cells vary in may ways:Size: Prokaryotic cells are smaller than eukaryotic cells. Prokaryotic cells have a diameter of 0.1-0.5 micrometers whereas eukaryotic cells have a larger...

AG
Answered by Amisha G. Biology tutor
5150 Views

What is the origin of such a wide genetic variation among offspring?

In all the species that reproduce sexually, there are three main mechanisms that contribute to genetic variation:independent assortment of chromosomes, crossing-over, and random fertilization. Independent...

AM
Answered by Andrew M. Biology tutor
4742 Views

Why did relations between the USA and the Soviet Union worsen in the years 1947–49? Explain your answer

Firstly, its key to look at the relations between these two Superpowers, the US and Soviet Union, prior to 1947. The Grand Alliance during the Second World War resulted in a brief relaxation of tensions b...

NT
10361 Views

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