Activities
Competitive & non-competitive inhibitors - model answers
These are suggested model answers for the activity Competitive & non-competitive inhibitors questions, on the page Inhibition of Enzymes HL (2025) As model answers they don't cover all the possible options...
Activities
Enzyme data - model analysis (2025)
This file shows one way to analyse the data for the enzyme inhibitor experiments. Model analysis for the data on enzyme inhibitors...
Activities
Activation energy - model answers
Answer the following questions....
Activities
Yeast and Catalase Experiment (2025)
Students use a simulation to visualise collisions between molecules of enzymes and substrate to help understanding of substrate specificity. Then by performing a series of simple practical experiments...
Activities
Intracellular & extracellular HL (2025)
Enzymes produced by cells may not be active inside the cell, they could be used outside the cell. Extracellular enzymes are most often linked to digestion of large molecules whereas intracellular enzymes...
Activities
Yoghurt and milk bacteria experiment (2025)
This lab is a safe way to demonstrate the structure of prokaryotes and to introduce the variety of roles which prokaryotes have in metabolism. The comparison of slides of milk, yoghurt and kefir illustrates...
Activities
Membrane transport models (2025)
Using all that we know about molecules and about the structure of the cell membranes. The challenge is to illustrate the transport of four very different molecules through the membrane using play-doh,...
ATL in Biology
Membrane transport models Free
Using all that we know about molecules and about the structure of the cell membranes students are challenged to illustrate the transport of four very different molecules through the membrane using play-doh,...
Activities
Membrane structure - model answers
These are suggested model answers for the activity Membrane structure questions on the page Membrane Structure (2025) As model answers they don't cover all the possible options for correct responses,...
Activities
Membrane Structure (2025)
An introduction to the components of the cell membrane begins this activity. This is followed by screencast of drawing a membrane diagram and a chance to practise drawing the structure. IB style questions...