121 Plus 9 Biology Experiments

Learn to make a monocle in an easy way.Thing Required:NewspaperDirections:Roll one index finger in tightly to form a very tiny hole about the size of the point of a writing pen. Hold the newspaper close enough to your eyes so that the print may just be barely blurred. Close one eye and with the open […]

Is freezing a good way to preserve any food?Things Required:Lettuce leaves or green pepper or tomatoCloves of garlic or onion2 tablespoonfuls of (30 ml) cottage cheese3 plastic bagsLabels and freezer tape Directions:Cull the vegetables, wash and pat them dry. Put them each in a plastic bag, whole or cut up, and remove the air. Seal

In this neat experiment, we will know how an eye lens works.Things Required:Magnifying lensSheet of typing paperRuler Directions:Darken a room. Hold the magnifying lens about 5 feet (1½ m) from an open window. Position the paper on the opposite side of the lens from the window.Slowly, move the paper back and forth from the lens

Make the following cookies on two different days-one sunny and dry, the other rainy. The cookies will taste good on both days.Things Required:1/2 cup of butter or margarine1/4 cup of sugar1/2 tsp vanilla extractWooden spoon1 cup (112 g) of flour plus 1 to 3 extra Tablespoon (8-24 g)A mixing bowlA cookie sheet Directions:Let the margarine

The idea is to determine your sensitivity to taste.Things Required:ToothpicksBlindfoldSpring-type clothespinAppleOnionDirections:Take an adult to peel and cut the apple and onion into small bite-size pieces of equal size. Ask a helper to assist you with the experiment. Without seeing or smelling, the person will decide on the identity of the food by taste only. Blindfold

Certain herbs, such as parsley, chervil and chives are preserved better by freezing than by drying. The secret is to package them so that you may keep air out and moisture in.Things Required:A bunch of herbs (parsley, basil, dill, sage, thyme or chives)Thick small plastic bags, jars or freezer containersPaper towelsLabels and felt-tipped penDrinking straw

This test is to demonstrate the semi-permeability of a cell membrane.Things Required:Egg from experiment The Undressed EggJar with a lid (the egg must fit in the jar)Corn syrup Directions:Pour 3 inches (7½ cm) of corn syrup into the jar. Carefully place the egg in the jar. Close the lid, and allow the jar to stand

A raisin starts life as a grape and a prune as a plum. What happens to these juicy fruits? See for yourself.Things Required:Launch of white seedless grapes2 drying trays (make your own by spreading cheesecloth or wire mesh over old frames or kitchen cooling racks)A pot of boiling waterA strainer4 empty juice cans or large

In this experiment, we will observe the semi-permeability of a cell membrane.Things Required:1 raw egg in its shell1 jar with a lid (the egg must fit inside the jar)Clear vinegarFlexible measuring tape Directions:Measure and record the circumference around the centre of the egg. Record the appearance of the egg. Place the egg inside the jar.

The function of this experiment is to observe the movement of particles through a membrane.Things Required:1 plastic sandwich bag1 twist tieTincture of iodineCornstarch2 measuring cups (500 ml)Eye-dropperMeasuring spoon -tablespoon (15 ml)Directions:Fill a cup one-half full with water, and add 20 drops of iodine. Fill a second cup with water and stir in one spoon of

If you want light, fluffy muffins, take care to treat the batter right. See what happens if you don’t.Things Required:1 cup (112 g) all-purpose unbleached flourA small egg3 tablespoonfuls of sugar1 teaspoonful of baking powder1/4 ground cinnamon1/4 teaspoonful of ground nutmeg2 large bowlsA wooden spoon1/4 cup (60 ml) of oil1/2 cup (120 ml) of milkA

The intention of all this effort is to view the outreaching effect of a small amount of pollution on a stream and its wildlife.Things Required:1 gallon (4 litre) glass jarMeasuring cup (250 ml)Red food colouring Directions:Pour one-half cup of water into the gallon (4 litre) jar. Add and stir in two drops of food colouring.

This experiment shows you the horrible effects that polluting detergents can have on birds.Things Required:1 quart (1 litre) clear glass bowlMeasuring cup (250 ml)Liquid oilPowdered washing detergentMeasuring spoon-teaspoon (5 ml) Directions:Pour 1 cup of water into the bowl. Add 1 spoon of liquid oil. Observe the surface of the water. Sprinkle 2 spoons of powdered

Purpose : to determine the effect of plastic garbage pollution on sea animals.Things Required:Rubber band Directions:Hook one end of the rubber band around your little finger. Stretch the rubber band across the back of your hand and hook the free end on your thumb. Try to remove the rubber band without touching anything.Seals and fish

What happens if we add baking powder to an acid?Things Required: 2 half-filled glasses sour milk or orange or lemon juice1/2 teaspoonful of baking powder1/2 teaspoonful of baking sodaDirections:Add baking powder to one of the half-filled glasses of sour milk and baking soda to the other glass.This Is What Happens:The sour milk with the baking