Five biology diagrams worth memorizing

Grade 12 Biology is a mountain of vocabulary. A handful of diagrams carry most of it, so if you can draw these, the words tend to attach themselves.

Grade 12 Biology (SBI4U) can feel like a vocabulary avalanche. Here's the move strong bio students use: don't memorize lists, memorize pictures. Learn to draw a few key diagrams from a blank page and the terms hang themselves on the structure.

The five to know cold

The cell membrane. Phospholipid bilayer, embedded proteins, channels. Active versus passive transport makes sense the moment you can see it.
An enzyme and its active site. Substrate, induced fit, and how temperature and pH change things. Most of the metabolism unit comes back to this.
Cellular respiration as a flow. Glycolysis, then Krebs, then the electron transport chain. You don't need every intermediate. You need where the ATP gets made and what goes in and out of each stage.
The central dogma. Replication, transcription, translation, drawn as one pipeline. Suddenly molecular genetics stops feeling like random trivia.
A feedback loop. Stimulus, receptor, control centre, effector, response. Blood sugar and body temperature are the same diagram with different labels.

Practise drawing each one without looking, then label it. When "induced fit" or "chemiosmosis" shows up, you'll have a picture to hang it on instead of a definition floating in space. That's the difference between recognizing a word and actually knowing it.