Figure & Table Analysis

Axes First, Curves Second

Before interpreting any figure, read both axis labels and units, then the legend. Most figure traps exploit students who look at curve shape before noticing a log scale, an inverted axis, or that the y-axis measures inhibition rather than activity.

Compare the Right Things

Identify the control condition and compare each experimental curve or column against it, one difference at a time. In tables, scan for the row or column that breaks the pattern — that anomaly is usually what a question targets.

Common MCAT Figure Types

Michaelis-Menten and Lineweaver-Burk plots (intercepts give $K_m$ and $V_{max}$), titration curves (buffering plateaus at each $pK_a$), dose-response curves, absorbance spectra, and gels (bands ordered by size). Know what a shift in each direction means biologically.

Key Takeaways

• Read axes, units, and legend before the data
• Anchor every comparison to the control
• The anomalous data point is the question
• Know the canonical plots and what shifts in them mean