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Biology
GCSE

Explain the processes involved in eutrophication

Eutrophication is where a surplus of nutrients in a lake or pond leads to an overgrowth of plant life, causing a shift in the biodiversity. There are 5 steps to this process:

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RW
Answered by Rebecca W. Biology tutor
7534 Views

Describe mitosis as part of the cell cycle

Define mitosis: a process of cell division where a single cell splits into two identical daughter cellsWhen does it occur? When the body requires more cells for growth.The overall process has 5 steps.Inte...

CT
Answered by Chloe T. Biology tutor
4008 Views

Why does our heart rate increase when we run compared to when we are sitting?

Running demands a lot of energy in our leg muscles in order for them to contract and relax. Energy is released in the process of respiration which breaks down glucose into ATP. The equation for respiratio...

AM
Answered by Ayesha M. Biology tutor
3151 Views

What are the advantages and disadvantages of sexual reproduction?

Sexual reproduction has many evolutionary advantages. These include: (1) a genetic variation in offspring that is not seen with asexual reproduction. (2) The variation allows the species<...

LW
Answered by Lois W. Biology tutor
38534 Views

Why are enzymes called catalysts if they are proteins and not chemicals?

A catalyst refers to many types of different molecules or chemicals which can reduce the activation energy of a reaction without being used up itself. Activation energy is the minimum ene...

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Answered by Meghna V. Biology tutor
3978 Views

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