Cambridge IGCSE Biology - 0610 - Core Paper 1 2011 Summer Zone 3

The diagram shows a food web.
Which of the following is a food chain in this web?

In a particular habitat, hyaenas eat antelopes and grass is eaten by antelopes. What is the source of energy for the grass?

A single tree is food for a large population of caterpillars. Several small birds eat the caterpillars. The small birds are eaten by a bird of prey. Which diagram shows the pyramid of numbers for this food chain?

The diagram shows some of the effects of human activity on a river.

What could have caused these effects?

A large area is heavily overgrazed for many years. What is the effect on soil nutrients and soil erosion? [Table_1]

An organism has dry scales covering its body.
To which vertebrate group does it belong?

The diagram shows an animal.
Use the key to identify the animal.
1. has legs ............................................. go to 2
has no legs ..................................... go to 3
2. has a shell ........................................ animal A
has no shell .................................... animal B
3. has one muscular foot .................... animal C
has more than one foot .................. animal D

What are enzymes made of?

At which temperature do most enzymes from the human body become completely denatured?

The diagram shows a developing human fetus within the uterus. What is a main function of X?

The diagram shows a pod from a pea plant. Which line correctly shows the path that was taken by a pollen tube to an ovule?

In rabbits, the allele for dark fur, R, is dominant to the allele for white fur, r.
The diagram shows a cross between a rabbit with dark fur and a rabbit with white fur.

What are the genotypes of the offspring?

What is always found in female gametes and may be found in male gametes?

In which order does water pass through these structures in a plant?

Which pair of substances is transported in the phloem?

What is formed first in a leaf as a result of photosynthesis?

The diagram illustrates changes in air pressure taking place inside the lungs during a complete cycle of breathing. Atmospheric pressure is 101 kPa.
Which position on the graph corresponds to the point at which the ribs are beginning to be raised?

The graph shows the rate and depth of a person's breathing before exercise.
Which graph shows the rate and depth of breathing of the same person immediately after a period of exercise?

The diagram shows four arthropods.

[Image_1: Pediculus ×20, Anopheles ×10, Dermacentor ×7, Carcinus ×0.5]

How many of these arthropods are insects?

The diagram shows part of the carbon cycle. Which process is taking place at X?

The diagram shows part of the water cycle. Which arrow represents condensation?

Which characteristic is shown when a person detects a gas in the air by its smell?

Which statement about respiration is not correct?

Which process does not involve an increase in dry mass?

The diagram shows four flasks which were set up to investigate the conditions needed for germination. In which experiment will the seeds germinate most quickly?

Some bacteria were grown in a nutrient solution over a period of two weeks. The graph shows how the population of bacteria changed during this time.
Which is the lag phase in the growth of this population?

The diagram shows a plant cell.

Which labelled structures are found in plant cells but not in animal cells?

The diagram shows another plant cell.
Which feature indicates that it is a palisade cell?

Which structures are adapted for supporting a plant?

The diagram shows some parts from the blood of a mammal. Which part would contain the breakdown products of bacterial cells?

Which describes the structure and function of a red blood cell? [Table_1]

Boiling potatoes destroys their cell membranes. A peeled, boiled potato strip is placed in a concentrated solution of salts. [Image] What takes place?
[Table_1]

A red blood cell is placed in a concentrated sugar solution.
What happens and why?

Nutrients are made up of smaller basic units. Nutrients can be identified by food tests. Which nutrient is a protein?
[Table_1]

In which part of the body does the breakdown of drugs occur?

The graph shows pH changes in the mouth after eating.
Why is it a good idea to brush teeth after eating?

The diagram shows a cell.
What type of cell is shown?

The diagram shows four specialised cells.

Which feature is not common to all of these cells?

Weeds are growing in a crop. What should be used to kill the weeds?

When a bright light is shone into the eye, the diameter of the pupil decreases. What is this an example of?