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For IB short answer questions, the command term is almost as important as the content of the subject itself. Here, "explain" highlights to you that an in depth answer with examples is require...

Nerve impulses are electrical impulses that travel along the axons of nerve cells (neurons) carrying various information. Propagation of electricity is possible due to differences in <...

1) Tissue composed of undifferentiated totipoten cells in plants 

2) Found in roots and shoots

3) Responsible for vertical growth

4) produces PRIMARY phloem an...

[Pre-initiation - Specific enzymes catalyse the attachment of amino acids to tRNA, requires ATP]

1) The small ribosomal subunit binds to the 5' end of mRNA and finds the (AUG) start codon...

Non-disjunction is the failure of chromosome pairs to separate properly during meiosis. This failure of separation usually occurs either in meiosis I (in anaphase I) or in meiosis II (in anaphase II). ...