Cambridge IGCSE Biology - 0610 - Core Paper 1 2012 Winter Zone 3

What is respiration?

The table shows some features of the leaves of four plants. Which plant is a monocotyledon? [Table_1]

The diagram shows a key for five vertebrates.
Which class of vertebrates does organism T belong to?

The picture shows an animal.
What is the name of this animal according to the binomial system?

The cell shown in the diagram has been magnified 3000 times. What is the actual diameter of the cell?

Osmosis is defined as the diffusion of water molecules

The diagram shows a cross-section through a plant stem.
Q shows the part that is stained red when the stem is placed in water containing a red dye.
What is found at Q?

The diagram shows a motor (effector) neurone.
Which structure is also found in white blood cells, but not in red blood cells?

At what level of organisation is a leaf?

How do carbon dioxide and oxygen move in and out of a leaf mesophyll cell?

The diagram shows part of a section through a leaf.
Which arrow shows the direction of movement of water by osmosis in a leaf?

The graph shows the effect of pH on the activity of two enzymes.
At which pH is the activity of both enzymes the same?

Four identical mixtures of starch and amylase were kept at different temperatures. The graph shows the time taken for the starch to be completely digested at each temperature.
At which temperature is the rate of reaction quickest?

Which nutrient produces a purple colour when mixed with biuret solution?

Which form of energy is stored within glucose molecules made during photosynthesis?

The graph shows the effect of several minutes of vigorous (hard) exercise on heart rate.
Which letter on the graph is at a time when the person is doing this exercise?

Which blood vessel, if it becomes blocked, could lead directly to a heart attack?

Which substances are dissolved in human blood plasma?

Four test-tubes were set up as shown in the diagram and left in full sunlight. After several hours, which test-tube would contain the most dissolved carbon dioxide?

The diagram shows apparatus used to investigate anaerobic respiration in yeast.
What happens to the coloured liquid?

A man injures his arm in an accident. Afterwards, he can feel objects touching his hand, but he cannot move his hand away from them.
What could cause this?

The diagram shows the human urinary system.
Which row shows substances that are present in each of these structures in a healthy person?

The diagram represents some human organs and their blood vessels.
Immediately after taking an alcoholic drink, how would the levels of alcohol compare in blood vessels P, Q and R?

The diagram shows an experiment set up to investigate the response of plant stems to gravity.



What is a suitable control for this experiment?

When the body temperature rises above 37 °C, which changes help to return the temperature to normal? [Table_1]

The graph shows changes in the thickness of the uterus lining of a woman.



What happens each time at X?

Which method of birth control is based on knowing the stage a woman is at in her menstrual cycle?

The graph shows the growth of a child into an adult.

What should be the labels on the axes?

The graph shows the effect of storage time on the germination of some seeds.

What can be concluded from this graph?

What results from meiosis of a diploid cell?

What is an allele?

In a pond, the biomass at each trophic level is measured. The results are shown in the table.
Which trophic level contains herbivores?
[Table_1]

The diagram shows the flow of energy in a food chain.

What are the forms of energy P, Q and R?

Carbon is essential to life.
Which process provides a carbon-containing compound for all life forms?

The diagram shows part of the water cycle.
What are processes S and T?

The diagram shows part of the carbon cycle.

What is the simple substance?

The graph shows the population of mosquito larvae in a pond. On day 3, mosquito fish, which eat mosquito larvae, are released into the pond.



What is the most likely reason for the decline in the population of larvae after day 3?

Which two gases both contribute to global warming?

Which pollutant is most likely to cause mutations?

Insecticides sprayed in low concentrations may increase the yield of a crop, but may also be harmful to wildlife.
What is an explanation for this?