Lectures - 2nd Year Biology

At 2:55 PM, Finch stopped. The clock showed five minutes early—a first in his career.

Mira stood, walked to the screen, and pointed a purple-nailed finger at the cristae—the folded inner membrane. “Textbooks show these as static shelves. But last month, Nature published cryo-EM data showing they oscillate. They pulse. The folds change shape depending on calcium concentration. Which means the electron transport chain complexes aren’t fixed in place—they’re moving relative to each other in real time.” 2nd year biology lectures

A murmur rippled through the lecture hall. At 2:55 PM, Finch stopped

He erased the whiteboard slowly, leaving one corner untouched: a small, wobbly mitochondrion with a question mark inside it. Then he reopened his laptop, deleted slide seven, and started rewriting his lecture from scratch. At 2:55 PM