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How are specialised cells different to normal body cells?

Different parts of the body have very different functions, so it is important that the cells in these different parts have adapted in order to help the functioning to be more efficient. For example, red bloo...
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Answered by Sherrie J. • Biology tutor
10891 Views

How does MRI work?

MRI stands for magnetic resonance imaging and uses the application of a magnetic field and radio frequency photons to manipulate the spin state of protons (hydrogen nuclei). Hydrogen is one of the most abund...
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Answered by Sebastian V. • Biology tutor
10414 Views

What are the advantages of animals eating excess food and putting on weight for winter?

1) They put on fat which is a good insulator and allows the animal to retain its heat. 2) The animal in putting on weight will become larger and have a smaller surface area to volume ratio which also decreas...
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Answered by Ahmad T. • Biology tutor
4977 Views

How does meiosis achieve genetic diversity?

Meiosis produces 4 haploid daughter cells and is essential for forming gametes that contain one copy of each chromosome. Meiosis allows genetic diversity which gives rise to new combinations of genetic allel...
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Answered by Shannon G. • Biology tutor
10127 Views

What is the difference between facilitated diffusion and active transport?

When moving across a selectively permeable membrane, ions, polar and large molecules cannot dissolve easily in the lipid membrabe. Instead, transport must occor by way of protiens that act as carriers or cha...
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Answered by Shannon G. • Biology tutor
46888 Views