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ScienceRevision

@IScienceRevI

GCSE revision tweets on the go! So what are you waiting for? Drop a follow! Struggling on revision techniques, tweet us or send us a DM we'd love to help! :)

Functional foods are marketed as having health benefits


#dna - a gene is a section of a molecule of DNA, a gene codes for a specific protein.


#cellmembrane - controls what goes in and out of cell.


#cytoplasm - gel like substance where most chemical reactions take place. #definition


#Nucleus - contains DNA which controls what the cell does. #definition


We've recently been asked many questions science related of course via direct message, if you've any questions please do ask. :)


The kidneys filter stuff out of the blood under high pressure and reabsorbing the useful things to produce the end product, urine.


Kidneys perform 3 main roles: removal of urea, adjustment of ion levels, adjustment of water content. #biology


Both urea and cO2 diffuse into bloody and both substances must be removed in the kidneys #biology


Urea is the breakdown of excess amino acids. #biology


CO2 is the waste product of respiration. #biology


Cell metabolism produces waste product such as urea and CO2 #biology


Cat scans: can be used to image soft tissue and bones. #Physics


Cat Scans: use intense beams of X-rays which are strongly ionising. #Physics


Cat scans: use X-rays to produce an image of a 2D slice through the body. #Physics


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