A collection of experiments that demonstrate biological concepts and processes.
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Published experiments

Here you will find a complete list of all the practicals and standard techniques published on the site so far. This will be continually added to as more and more practicals are produced.

Experiments Standard Techniques

A closer look at blood

A model for natural selection - spaghetti worms

A simple model for natural selection

A quantitative food test: protein content of powdered milk

A window on the past: measuring stomatal density

An enzyme-catalysed synthesis

Assessing human hearing

Assessing skin sensitivity 1 - locating different receptors

Assessing skin sensitivity 2 - temperature receptors

Assessing skin sensitivity 3 - touch discrimination

Biodiversity in your backyard

Brine date

Changes in earthworm responsiveness

Cloning a living organism

Comparing the flower structure of different angiosperms

Controlling body mass

Digestion of starch by microbes

Digestion of protein by microbes

Dissecting lungs

Dissection of the ventilation system of a locust

Effect of size on uptake by diffusion

Elastic recoil in arteries and veins

Estimating rate of transpiration from a plant cutting

Evaluating methods of pest control

Evaluating Visking tubing as a model for a gut

Extracting DNA from living things

Extracting fibres from plants

Following gene transfer by conjugation in bacteria

Gene induction: β-galactosidase in E. coli

Going up in smoke

Hazards of defrosted food

How do plants and animals change the environment around them?

How good is your toilet paper

How much energy is there in food?

Identifying the conditions needed for photosynthesis

Interpreting an investigation of plant hormones

Interpreting information about sweating and temperature

Introducing ideas about inheritance

Investigating an enzyme-controlled reaction: catalase and hydrogen peroxide concentration

Investigating antimicrobial action

Investigating enzymes used in laundry detergents

Investigating factors affecting Daphnia heart rate

Investigating factors affecting the breathing rate of a locust

Investigating factors affecting the rate of photosynthesis

Investigating how we see colour

Investigating mitosis in allium root tip squash

Investigating osmosis in chickens’ eggs

Investigating photosynthesis using immobilised algae

Investigating the effect of amylase on a starchy foodstuff

Investigating the effect of concentration of blackcurrant squash on osmosis in chipped potatoes

Investigating the effect of concentration on the activity of trypsin

Investigating the effect of pH on amylase activity

Investigating the effect of temperature on plant cell membranes

Investigating the effect of temperature on the activity of lipase

Investigating the effects of biochar on soil fertility

Investigating the light dependent reaction in photosynthesis

Investigating the response of Calliphora larvae to light

Investigating the response of worms to soil improvers

Investigating the resting posture of peppered moth larvae

Investigating transport systems in a flowering plant

Investigating turn alternation behaviour of woodlice

Investigating what makes fruit go brown

Looking at a heart

Making Reebops: a model for meiosis

Mapping change over time

Measuring rate of water uptake by a plant shoot using a potometer

Measuring reaction time of a human nerve-controlled reaction

Measuring respiratory quotient

Measuring the rate of metabolism

Measuring the Vitamin C content of foods and fruit juices

Microbes are all around us

Microbes ate my homework

Microscale investigations of catalase activity in plant extracts

Modelling effect of aspirin on blood clots

Monitoring the body’s reactions to stress

Modelling the human ventilation system

Modelling the sliding filament hypothesis

Monitoring water pollution with invertebrate indicator species

Movement of seed beetles

Nitrogen-fixing bacteria free-living in the soil

Nitrogen-fixing bacteria in root nodules of leguminous plants

No stomach for it: investigating antacid medication

Observing blood circulation in Asellus

Observing earthworm locomotion

Observing osmosis, plasmolysis and turgor in plant cells

Observing patterns in the distribution of a simple plant

Observing protoctista in water using the hanging drop technique

Observing the effects of exercise on the human body

Observing the growth of pollen tubes

Observing water moving through plants

Practice makes perfect?

Preparing an anther squash

Preserving food

Recording variation in ivy leaves

Selection in action - banded snails

Selection in action - peppered moths

Structure of synovial joint with tendons and ligaments

Studying animal behaviour

The vertebrate heart in action

Tracking active uptake of minerals by plant roots

Using a choice chamber to investigate animal responses to stimuli

Using a spirometer to investigate human lung function

Working with immobilised enzymes or microscopic organisms

Aseptic techniques

Incubating and viewing plates

Maintaining and preparing cultures of bacteria and yeasts

Making a calibration curve for starch concentration

Making a pour plate

Making a spread or 'lawn' plate

Making a streak plate

Making serial dilutions

Making up nutrient agars

Pouring an agar plate

Testing leaves for starch: the technique

 

 

Page last updated on 05 January 2012