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

Which characteristic is shown when a person smells a gas in the air?

The diagram shows four arthropods.
How many of these arthropods are insects?

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

The diagram shows four specialised cells.
Which feature is not common to all of these cells?

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 shows that it is a palisade cell?

Which structures are adapted for supporting a plant?

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. What takes place?

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

What are enzymes made of?

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

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

What does photosynthesis form in a leaf first?

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

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

Which two substances are transported in the phloem?

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

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

Which statement about respiration is not correct?

In which part of the body do drugs break down?

The diagram shows a cell.

What type of cell is shown?

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

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?

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

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?

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

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?

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

In one habitat, hyaenas eat antelopes and antelopes eat grass. 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. A bird of prey eats the small birds. Which diagram shows the pyramid of numbers for this food chain?

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?

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?

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

A large area is heavily overgrazed for many years. How does this affect soil nutrients and soil erosion? [Table_1]

The diagram shows some of the effects of human activity on a river.
What could have caused these effects?