Cambridge IGCSE Biology - 0610 - Core Paper 1 2011 Winter Zone 2

Root hair cells are found on plant roots.
Which feature would be present in a root hair cell but not a sperm cell?

Which cell shows the position of the nucleus correctly?

What is the correct order of arthropod groups, from those with most legs to those with fewest legs?

Which animal is an annelid?

What are the levels of organisation of
• the wall of a villus,
• the small intestine?
[Table_1]

Which characteristic of living organisms is described by the following definition?
'The ability to detect changes in the environment and make responses'.

Phloem is an example of

Which structure is found in a palisade cell but not in a liver cell?

Which is an incisor tooth?

A human digestive enzyme breaks down its substrate at a fast rate at 35°C. What would occur if the enzyme and substrate were kept at 75°C?

The diagram shows a fetus attached by the placenta to the uterus wall of the mother.
By which process do all substances pass between the fetus and the mother in the placenta?

Dietary fibre passes through several structures after leaving the stomach.
In which order does the dietary fibre pass through these structures?

What happens in osmosis?

The roots of plants take up nitrates from the soil. What are the nitrates used to make?

The diagram shows the action of amylase. What is the function of the enzyme amylase?

Small molecules are used as the basic units in the synthesis of large food molecules. Which statement is correct?

The diagram shows a germinated bean seed with a horizontal radicle. This is placed on a slowly rotating disc and is left for three days.
Which diagram shows the appearance of the radicle after three days?

Which process does not release carbon dioxide to the atmosphere?

In what form does a plant absorb and lose water? [Table_1]

The graph shows the variation in a person’s body temperature over a period of time.
Which temperature change is likely to cause most sweating?

An experiment is set up to investigate the uptake of oxygen by germinating seeds.

What happens to the levels at X and Y?

Which type of cells do all sense organs contain?

Which materials are excreted by kidneys and lungs? [Table_1]

The diagram shows a plant shoot and the same shoot six hours later.

Which change in environmental conditions could cause this change in the appearance of the shoot?

Which group contains substances that are all carried in the blood?

The diagram shows a potato tuber that developed from the stem of a parent potato plant. Three shoots are starting to grow from the tuber. How do the genotypes of the shoots compare with the genotypes of the tuber and of the parent?

What are the chromosomes for the two sexes in human beings?
[Image_1: Table showing chromosomes for female and male]

The diagram shows a neurone.
Which structures could be found at X and Y?
[Table_1]

Which is not growth of an organism?

The diagram shows the early growth of a green plant.
What is occurring?

The colour of a mouse’s fur is controlled by a single pair of alleles. A mouse with black fur was crossed with a mouse with white fur. All the offspring had black fur.
What would be the most likely ratio in several litters of offspring if two of these black offspring were crossed?
[Table_1]

The diagram shows the male reproductive system.
What is the tube labelled X?

The diagram gives a simplified scheme for energy flow through an ecosystem.
Which processes do the labelled arrows represent?

The diagram shows part of the carbon cycle.

Which numbers represent excretion?

The diagram shows a food web.
At which level does energy from the Sun enter the food web?

The graph shows the rate of growth for a population of herbivores.
Which is the exponential (log) phase in the growth of this population?

Different pesticides were tested to see how poisonous they were to fish. Scientists found the concentration of pesticide that killed 50% of the fish within four days.
The table shows the results of the tests.
[Table showing concentration of pesticide]
Which pesticide was the most dangerous to the fish?

The diagram shows the carbon cycle.
Which process produces carbon dioxide from substances made by photosynthesis millions of years ago?

The food chain shows the number of animals relying on two bushes for their survival.
At which step in the food chain do the organisms have the greatest amount of energy?

The diagram shows four places on a river, where water samples were taken.

Which graph shows oxygen concentrations in the river?