Theory

CH11 - GAS EXCHANGE IN HUMANS

The diagram illustrates changes in air pressure taking place inside the lungs during a complete cycle of breathing. Atmospheric pressure is 101 kPa.Wh...

2011 Summer

2

Theory

CH11 - GAS EXCHANGE IN HUMANS

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 immed...

2011 Summer

2

Theory

CH11 - GAS EXCHANGE IN HUMANS

The table shows the percentage composition of three gases in atmospheric air.[Table_1]What is the composition of the air breathed out by a person?[Tab...

2012 Winter

1

Theory

CH11 - GAS EXCHANGE IN HUMANS

In an experiment, three glass bell jars were set up as shown in the diagram.At the end of the experiment, which bell jar has the most oxygen and which...

2009 Summer

2

Theory

CH11 - GAS EXCHANGE IN HUMANS

What are the properties of an efficient gas exchange system, assuming it has a good blood supply? A. large surface and thick walls B. large surface an...

2010 Winter

2

Theory

CH11 - GAS EXCHANGE IN HUMANS

The diagram represents the exchange of gases during breathing and during respiration in the body.What is represented by X and by Y?[Table_1]\(\begin{a...

2009 Summer

1

Theory

CH11 - GAS EXCHANGE IN HUMANS

(a) Define the term \textit{aerobic respiration}.........................................................................................................

2010 Winter

1

Theory

CH11 - GAS EXCHANGE IN HUMANS

The diagram shows someone blowing up a balloon. What percentage of the gas in the balloon is carbon dioxide? A 0.04% B 0.4% C 4.0% D 40%

2010 Summer

2

Theory

CH11 - GAS EXCHANGE IN HUMANS

(a) In the space below write a balanced chemical equation for anaerobic respiration in muscles.......................................... $\rightarrow$...

2010 Winter

2

Theory

CH11 - GAS EXCHANGE IN HUMANS

The diagram illustrates changes in air pressure taking place inside the lungs during a complete cycle of breathing. Atmospheric pressure is 101 kPa. W...

2011 Summer

1

MCQ

CH1 - CHARACTERISTICS AND CLASSIFICATION OF LIVING ORGANISMS

The diagram shows a leaf on a plant.Which characteristic of life is represented by this diagram?

2019 Summer

2

MCQ

CH1 - CHARACTERISTICS AND CLASSIFICATION OF LIVING ORGANISMS

The diagram shows how _Homo sapiens_ (modern people) could have evolved from earlier ancestors.Which statement about modern people and their ancestors...

2019 Summer

1

MCQ

CH2 - ORGANIZATION AND MAINTENANCE OF THE ORGANISM

The photomicrograph shows part of an animal cell.What is the structure labelled X?

2019 Summer

2

MCQ

CH2 - ORGANIZATION AND MAINTENANCE OF THE ORGANISM

Which features are possessed by all plant cells? [Table_1]

2019 Summer

2

MCQ

CH2 - ORGANIZATION AND MAINTENANCE OF THE ORGANISM

The diagram shows part of the skin. What is the correct level of organisation for the skin?

2019 Summer

2

MCQ

CH3 - MOVEMENT IN AND OUT OF CELLS

The diagram shows a test-tube containing clear jelly. A drop of blue ink is injected into the middle of the jelly.The blue colour of the ink spreads t...

2019 Summer

1

MCQ

CH3 - MOVEMENT IN AND OUT OF CELLS

The apparatus shown was set up. Some hours later, the water in the beaker had turned blue, and the liquid in the glass tube had moved upwards.Which pr...

2019 Summer

2

MCQ

CH4 - BIOLOGICAL MOLECULES

Four solutions were tested to see whether they contained protein, starch or glucose.The colours of the solutions after the tests are recorded in the t...

2019 Summer

2

MCQ

CH4 - BIOLOGICAL MOLECULES

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

2019 Summer

2

MCQ

CH5 - ENZYMES

The diagrams show a protease enzyme catalysing the breaking of part of a protein molecule into smaller pieces.Which diagram has three correct labels?

2019 Summer

2