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Biology Dictionary for GCSE Biology and A Level Biology

 

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

M

Medulla (oblongata): The part of the lower brain which controls involuntary activities, such as control of breathing and heart rate.

 

Meiosis: Cell division that shuffles the genes on the chromosomes so that no two gametes are the same. Has two divisions, so a diploid cell gives rise to four haploid cells.

 

Messenger RNA [mRNA]: A mobile copy of a gene, a single strand of nucleotides which directs protein synthesis. Made in transcription, used in translation.

 

Mitosis: Normal cell division. One diploid cell gives rise to two identical diploid cells 

 

Monoculture: Growing the same crop on a large scale over several years.

 

Mutagen: An agent which causes mutation. e.g. ionising radiation, mustard gas

 

Myocardium: posh word for heart muscle.

 

Myogenic: the ability of heart muscle to beat on its own, without the stimulation of nerves. The word means ‘muscle originating’

 

Myoglobin: red pigment found in muscles. Essentially one quarter of a haemoglobin molecule. It has a higher affinity for oxygen than haemoglobin, so the curve is to the left. Its function is to store oxygen in the muscles, to allow aerobic respiration to continue for longer. More myoglobin = more stamina.

As I write the biology dictionary and make the videos to help you learn the definitions by listening in addition to reading them, you'll get the added benefit of hearing and learning the correct pronunciation of biological terminology - but there's more! I'm also making some interactive revision flashcards too! So you can revisit the key words when revising and really embed those a level biology definitions in your head! - The flashcards will be like this (See image below and click to download).

A-Level Biology is a whole lot easier when you know the definitions of commonly used words. This biology dictionary is here to help you learn those A level biology definitions. Remember, a good command of biological terminology (at GCSE but especially at A level) can mean the difference between a poor grade and an excellent one! Since of course you get marks awarded for using the correct biological definitions in the right context when answering exam questions and writing up lab work, coursework and assignments.

The biology dictionary is mainly aimed at a level biology students since at a level, the amount of new technical language expect is quite a lot!

 

Make learning biology definitions a regular part of your studies and keep checking in as more keywords and gcse biology definitions and a level biology definitions are added.

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*Note this A-Level biology Dictionary / Glossary of key terms is not comprehensive and will be updated and added to regularly, so keep checking in and make learning and revising a level biology definitions a consistent part of your biology studies

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