Cambridge IGCSE Biology - 0610 - Core Paper 1 2010 Winter Zone 3

The diagram shows a cell from a plant leaf.

Which parts are not found in animal cells?

The diagram shows a student's drawing of guard cells.

Which label line is \textit{incorrect}?

Water is a good solvent. What does this mean?

The diagram shows a structure found in the human body.
This is an example of

Which characteristic of living organisms can involve ingestion, absorption and assimilation?

The table shows some characteristic features of four vertebrates.
Which vertebrate is a mammal?
[Table showing features of vertebrates: scales, lays eggs, feathers, wings, hair]

The diagram shows the breathing system and a section of an alveolus surrounded by a capillary. Which label shows a cell?

Which system is used for naming species?

The table shows vitamin and mineral salt content of four foods.
[Table_1]
Which foods would stop a person from suffering from anaemia (lack of haemoglobin) and scurvy (bleeding gums)?

What does the digestion of starch produce?

The diagram shows a type of tooth.
Use the key to identify the tooth.
1. double rooted tooth .......................................... go to 2
single rooted tooth ......................................... go to 3
2. flattened crown ............................................. A
deeply ridged crown .................................... B
3. chisel shaped tooth .................................... C
cone shaped tooth .................................... D

Which substance is lost from the body by the kidneys, lungs and skin?

The diagram shows two solutions that are separated by a partially permeable membrane.

In which direction will most water molecules move in relation to their concentration gradient?

Six test-tubes were set up at different temperatures. Each contained identical solutions containing starch and amylase mixtures. The table shows the time taken for the reactions to finish in each test-tube.
[Table_1]
At which temperature does the amylase work best?

Which type of tooth is used for crushing food?

Two enzyme-controlled reactions are shown.

amino acids \( \xrightarrow{\text{enzyme 1}} \) proteins
proteins \( \xrightarrow{\text{enzyme 2}} \) amino acids

From these reactions, what deduction can be made about enzymes?

Yeast, warm water and substance Z were put into a test-tube. The apparatus was then set up as shown. After a while, the lime water began to go cloudy. What is substance Z?

What are the effects of smoking on the gas exchange system? [Table_1]

Where do the breakdown of drugs and the storage of urine occur?
[Table showing options for breakdown of drugs and storage of urine]

The diagram shows some blood vessels near the surface of the skin.
If vasoconstriction occurs at X, what happens to the blood flow at Y and Z?

The diagram shows blood vessel P which carries digested food from the small intestine to the liver.
Which row describes the level of glucose in blood vessel P and the level of glycogen in the liver, shortly after a meal containing carbohydrates?

How often must a blood cell in the renal artery pass through the heart before it again reaches the renal artery?

The diagram shows some bones and muscles in a leg of a human. What happens to muscle Y and to the leg at joint Z, when muscle X contracts?

What are the properties of an efficient gas exchange system, assuming it has a good blood supply?

The diagram shows a neurone carrying an impulse.
Which row describes the type of neurone and the direction of impulse?

The diagram shows a family tree and the inheritance of the ability to taste a certain substance. The allele for the ability to taste this substance is dominant. [Image_1: Family tree diagram] Which statement about the genotypes of the sisters Mary and Jeanne is correct?

In an experiment to investigate the effects of various environmental factors on germination, four boiling tubes were set up as shown.
In which tube would the seeds germinate most quickly?

Which type of reproduction and which type of cell division produces nuclei with half the number of chromosomes?
[Table_1]

The calendar shows the menstrual cycle of a woman in September 2008.
[Table_1]
Why could fertilisation not take place if sperms are released into the vagina on 8th September?

The graph shows how the height of a child changes with age.

When is the child's growth rate fastest?

The diagram shows some parts of the male reproductive system. Which part is cut during a vasectomy?

In some animals, B is the allele for normal skin (without spots) and b is the allele for spotted skin.
A pair of these animals has 37 offspring, 18 with spots and 19 without.
What are the most likely genotypes of the parents?

A persistent pesticide is one that does not break down.
What is one disadvantage of a persistent pesticide?

The graph shows the growth of a population in a suitable environment.
During which two stages is the population affected by lack of resources as a limiting factor?

At each stage in a food chain, energy is lost. What is a result of this?

The diagram shows a simple food web.

What must organism J be?

What effect does deforestation have on the levels of carbon dioxide, oxygen and water vapour in the atmosphere? [Table_1]

The diagram shows part of the water cycle.

Which processes will be slowed down by an increase in humidity?

The diagram represents the carbon cycle. Processes involved in the circulation of carbon are numbered 1 to 9. Which processes are parts of a food web?

Which part of the carbon cycle involves the release of energy from food substances in all living cells?