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Describe the hormone changes which lead to ovulation.

Follicle stimulating hormone (FSH) secreted from the pituitary gland stimulates egg maturation and oestrogen secretion from the ovaries. Oestrogen in turn inhibits FSH release and stimulates luteinising h...

TD
3974 Views

How does vaccination lead to immunity?

Vaccination involves administering a dead or inactive form of a pathogen to a subject, which stimulates white blood cells into producing antibodies specific for that pathogen. If the subject encounters th...

TD
2751 Views

Describe how you can distinguish between a bacterium and a virus.

Viruses are generally smaller than bacteria and are not living, whereas bacteria are considered as living species as a prokaryote. Viruses have no cytoplasm, cell membranes or cell wall and instead have a...

KK
Answered by Keshana K. Biology tutor
3028 Views

How do you approach the question in the ELAT exam?

In order to write a successful essay in your ELAT, and thereby allow you to proceed to the interview round in the Oxford application process, it is key to do multiple past papers (these can be found onlin...

CR
Answered by Claudia R. ELAT tutor
1162 Views

What is the difference between mitosis and meiosis?

Mitosis is a process associated with organism growth, and it involves a tetraploid cell dividing to give two genetically identical diploid cells. Meiosis is the process by which gametes are formed, and it...

TD
2730 Views

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