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To attain the two marks you have to say that the RER contains ribosomes and these synthesis proteins. Enzymes are specialised proteins.

Motor neurone - carry info from the central nervous system to the effector cells

Sensory neurones - carry info from sensory receptors to the CNS

relay neurones - carry signals from one part ...

Stem cells are undifferentiated cells that retain the ability to specialize. In animals/ mammals, they are found in the embryos and adult tissue and in plants they are found in the meristematic tissue in ...

Firstly, when answering an IB essay question, remember that you are noted through key words or concepts. I will put these in italics and then explain them. DNA is composed of nucleotides...

First, read the question carefully. It asks us to ‘Describe how mRNA is produced’, a good way to approach this is to go through the process step by step. Notice that the question is worth...