Practical skills — IGCSE Biology (0610) questions by topic

You are going to investigate the effect of concentration on diffusion. You will use cubes of agar which contain universal indicator and place them into different concentrations of…

A student used DCPIP solution to compare the concentration of vitamin C in five solutions. Method: put 1 cm³ of 1% DCPIP solution into a test-tube; use a syringe to add drops of…

The enzyme pectinase is used in the production of apple juice. In an experiment, a student investigated the production of apple juice using five different concentrations of…

Prepare a table and record your results. (Investigation: effect of temperature on the activity of catalase from potato extract. Test-tube C in a cold water-bath, test-tube R at…

Fig. 2.1 is a photograph of an acorn from a Caucasian oak, Quercus macranthera (magnification x3.4). A vertical line labelled P (top) to Q (bottom) marks the full length of the…

Prepare a table to record the results of the investigation. Convert the times on the stop-clocks shown in Fig. 1.2 to seconds and record these times in your table.

The temperature was maintained at 40 degrees C. Describe how the student could maintain the crushed apple and enzyme mixture at a constant temperature.

Prepare a table for the results of the investigation. Measure the maximum height of the foam, in mm, in each of test-tubes C, R and H shown in Fig. 1.1. Record these measurements…

Fig. 2.1 is a photograph of an acorn from a Caucasian oak, Quercus macranthera. Make a large drawing of the acorn in Fig. 2.1.

Measure the maximum heights of the foam in test-tube P and test-tube A in Fig. 1.2. Prepare a table and record these measurements in your table.

Fig. 2.1 is a photomicrograph of part of an egg case from a species of stick insect, Acrophylla titan. Draw a large diagram of the part of the egg case shown in Fig. 2.1.

Fig. 3.1 is a photograph of a banana borer insect which is a pest of banana plants. Line AB represents the length of the banana borer (with A and B marked at each end of the body,…

Fig. 2.1 is a photograph of a villus from one part of the small intestine (magnification ×210). Line AB represents the width of the villus in Fig. 2.1. Measure the length of line…

Fig. 3.1 is a photograph of a banana borer insect which is a pest of banana plants. Line AB represents the length of the banana borer (with A and B marked at each end of the body,…

Fig. 2.1 is a photograph of a villus from one part of the small intestine (magnification ×210). Line AB represents the width of the villus in Fig. 2.1. Measure the length of line…

You are going to investigate the effect of temperature on the rate of respiration in yeast cells (yeast releases carbon dioxide gas). A syringe is filled with 10 cm³ of yeast…

Fig. 2.1 is a photograph of a cross-section of a root from a carrot plant, Daucus carota (magnification ×6), with the diameter shown as line PQ. Draw a large diagram of the carrot…

Some animals live in cold places and sometimes huddle together (Fig. 1.1). You are going to investigate the effect of huddling on heat loss from model animals, using test-tubes of…

Some plants lose their leaves in winter and grow new leaves in spring. A scientist measured the total leaf area of the leaves on one grapevine plant, repeated this on 100 plants…

You are going to investigate the nutrient content of three drinks A, B and C using three tests: Test 1 (reducing sugars with Benedict's reagent in a hot water-bath, five minutes);…

The nutrient content of foods can affect a person's bones. In a study, the diet and bone density of 120 women aged 50–70 were monitored for two years; the mean daily calcium…

A student investigated the effect of temperature on the rate of respiration in yeast cells (yeast releases carbon dioxide gas). 15 cm³ of yeast suspension in a syringe was lowered…

Fig. 2.1 is a photograph of a cross-section of a root from a carrot plant, Daucus carota (magnification ×6), with the diameter shown as line PQ. Draw a large diagram of the carrot…

Some animals live in cold places and sometimes huddle together (Fig. 1.1). A student investigated the effect of huddling on heat loss from model animals, using test-tubes of hot…

Some plants lose their leaves in winter and grow new leaves in spring. A scientist measured the total leaf area of the leaves on one grapevine plant, repeated this on 100 plants…

A student investigated the nutrient content of three drinks A, B and C using three tests: Test 1 (reducing sugars with Benedict's reagent in a hot water-bath); Test 2 (starch with…

The nutrient content of foods can affect a person's bones. In a study, the diet and bone density of 120 women aged 50–70 were monitored for two years; the mean daily calcium…

Emperor penguins are large birds found in Antarctica where temperatures can be very low. Fairy penguins are small birds that live in Australasia where temperatures are much…

Fig. 2.1 is a photograph of a lizard at magnification ×0.6. Line CD represents the length of the lizard. Measure the length of line CD on Fig. 2.1. Calculate the actual length of…

You are going to investigate the effect of temperature on the activity of amylase. Amylase is an enzyme that catalyses the breakdown of starch to form reducing sugars. Iodine…

Milk contains fats. The enzyme lipase catalyses the breakdown of fats to form fatty acids and glycerol. The fatty acids cause the pH of the milk to decrease. Plan an investigation…

Fig. 3.1 is a photograph of a type of seaweed called bladder wrack. The bladders help the seaweed float in water. Draw a large diagram of the bladder wrack seaweed shown in Fig.…

Flour and yeast are used to make bread dough. Respiration in yeast produces carbon dioxide gas bubbles that make the bread dough increase in volume. You are going to use bread…

Fig. 2.1 is a photomicrograph of two guard cells in the lower epidermis of a leaf (magnification ×1650), showing two guard cells, surrounding epidermal cells, and line PQ marking…

Emperor penguins are large birds found in Antarctica where temperatures can be very low. Fairy penguins are small birds that live in Australasia where temperatures are much…

Fig. 2.1 is a photograph of a lizard at magnification ×0.6. Line CD represents the length of the lizard. Measure the length of line CD on Fig. 2.1. Calculate the actual length of…

Students investigated the effect of temperature on the activity of amylase. Amylase is an enzyme that catalyses the breakdown of starch to form reducing sugars. Iodine solution…

Milk contains fats. The enzyme lipase catalyses the breakdown of fats to form fatty acids and glycerol. The fatty acids cause the pH of the milk to decrease. Plan an investigation…

Fig. 3.1 is a photograph of a type of seaweed called bladder wrack. The bladders help the seaweed float in water. Draw a large diagram of the bladder wrack seaweed shown in Fig.…

Flour and yeast are used to make bread dough. Respiration in yeast produces carbon dioxide gas bubbles that make the bread dough increase in volume. A student used bread dough to…

Fig. 2.1 is a photomicrograph of two guard cells in the lower epidermis of a leaf (magnification ×1650), showing two guard cells, surrounding epidermal cells, and line PQ marking…