Help! What are mark boundaries in IB? (have exam tomorrow, need to know ASAP!)

<p>I’m taking the biology exam tomorrow (my only exam this year; I took bio one year ahead)</p>

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<p>What do these mark boundaries mean? Does it mean that can get between 79% and 100% and still get a 7? Isn’t that a bit low?</p>

<p>Does the 79%-100% include your labs, or is this just for the one exam? And if it is for the one exam, does it mean that if I get over 79% on the exam I get a 7 (is there scaling of questions of any kind?)</p>

<p>EDIT: I just took a practise exam and scored 90% on it…does that mean I get a 7? On the labs, I got 46/48</p>