Drills
38 drills, one for every topic. Each starts from an experiment, a data set or a mutation, and the feedback explains the mechanism behind the answer. Your scores build topic mastery.
38 of 38 drills
Macromolecules
Pond-side observations
Water & hydrogen bonding
Select all that apply2/5OlympiadNewCounting the water in digestion
Monomers, polymers & dehydration synthesis
Single answer2/5NewUnfolding and refolding ribonuclease
Protein structure & function
Prediction grid4/5OlympiadNewAmylase meets filter paper
Carbohydrates & lipids
Single answer2/5NewReading base compositions
Nucleic acids
Single answer3/5OlympiadNew
Cell Structure & Function
Following the label out of the cell
Organelles & compartmentalisation
Put in order2/5OlympiadNewPink agar cubes
Cell size & surface-area-to-volume
Single answer2/5NewMouse–human hybrid cells
Membrane structure & permeability
Single answer3/5OlympiadNewBlocking the sodium–glucose symporter
Membrane transport
Prediction grid3/5OlympiadNewPotato cores in sucrose
Tonicity & water potential
Single answer3/5OlympiadNew
Cell Energetics
What changed: Km or Vmax?
Enzymes & kinetics
Prediction grid4/5OlympiadNewMaking glutamine uphill
Energy coupling & ATP
Single answer3/5OlympiadNewHeavy oxygen in algae
Photosynthesis
Single answer2/5NewYeast with and without air
Glycolysis & fermentation
Select all that apply3/5OlympiadNewA child with a PDH defect
Pyruvate oxidation & the Krebs cycle
Select all that apply3/5OlympiadNewMitochondria in an oxygen electrode
Oxidative phosphorylation & chemiosmosis
Prediction grid4/5OlympiadNew
Cell Communication
Hormones on beads
Modes of cell communication
Single answer2/5OlympiadNewFrom adrenaline to glucose
Signal transduction
Put in order2/5NewGrowth signals with broken parts
Changes in signal transduction
Prediction grid4/5OlympiadNewAfter a sugary drink
Feedback & homeostasis
Single answer2/5NewCyclin comes and goes
The cell cycle & its regulation
Single answer3/5OlympiadNew
Heredity
Counting through meiosis
Meiosis & genetic diversity
Prediction grid2/5OlympiadNewDoes the test cross fit 1:1:1:1?
Mendelian genetics
Single answer3/5OlympiadNewWhite eyes, the other way round
Non-Mendelian inheritance
Single answer3/5OlympiadNewMapping two beetle genes
Linkage & recombination mapping
Single answer3/5OlympiadNewTwo errors, two outcomes
Chromosomal inheritance & nondisjunction
Select all that apply3/5OlympiadNew
Gene Regulation
Heavy DNA, light DNA: three models on trial
DNA replication
Prediction grid3/5OlympiadNewFrom template strand to peptide
Transcription, RNA processing & translation
Single answer2/5OlympiadNewMerodiploids: who acts in trans?
Operons: the lac operon
Prediction grid4/5OlympiadNewLiver and neurons: same genes, different messages
Eukaryotic gene regulation & differentiation
Select all that apply3/5OlympiadNewFive mutations, one reading frame
Mutations
Prediction grid3/5OlympiadNewCutting a plasmid twice
Biotechnology
Single answer3/5OlympiadNew
Ecology & Evolution
Finch beaks after a drought
Natural selection
Single answer3/5OlympiadNewToo few heterozygotes
Population genetics & Hardy–Weinberg
Single answer4/5OlympiadNewCytochrome c and the dolphin
Phylogeny & common ancestry
Single answer3/5OlympiadNewBefore or after the zygote?
Speciation
Prediction grid2/5NewEnergy up a pond food chain
Energy flow & nutrient cycles
Single answer3/5OlympiadNewParamecium in a flask
Population & community ecology
Single answer3/5OlympiadNew