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

Theory

CH13 - EXCRETION IN HUMANS

Which process removes the waste products of metabolism from the body? A. excretion B. nutrition C. reproduction D. respiration

2009 Summer

2

Theory

CH1 - CHARACTERISTICS AND CLASSIFICATION OF LIVING ORGANISMS

According to the binomial system, how should a human be named?A \, \textit{Homo Sapiens}B \, \textit{Homo sapiens}C \, \textit{homo Sapiens}D \, \text...

2009 Summer

1

Theory

CH1 - CHARACTERISTICS AND CLASSIFICATION OF LIVING ORGANISMS

Which leaf comes from a monocotyledonous plant?[Image_1: A, B, C, D are images of different leaf types]

2009 Summer

2

Theory

CH2 - ORGANIZATION AND MAINTENANCE OF THE ORGANISM

The diagram shows a palisade cell from a leaf. Which labelled structure produces oxygen?

2009 Summer

3

Theory

CH2 - ORGANIZATION AND MAINTENANCE OF THE ORGANISM

Which structure contains genes? A. the cell membrane of an animal cell B. the cytoplasm of an animal cell C. the nucleus of a plant cell D. the vacuol...

2009 Summer

1

Theory

CH2 - ORGANIZATION AND MAINTENANCE OF THE ORGANISM

The diagram shows a cross section through two guard cells of a leaf. Which labelled structures would also be found in an animal cell? A W and X B ...

2009 Summer

2

Theory

CH2 - ORGANIZATION AND MAINTENANCE OF THE ORGANISM

The diagram shows some cells from the lining of the trachea (windpipe) in the respiratory tract.What is the function of the structures labelled X?A ab...

2009 Summer

2

Theory

CH2 - ORGANIZATION AND MAINTENANCE OF THE ORGANISM

Which structures contain a cell nucleus?[Table: | | red blood cell | root hair cell | xylem vessel ||--------|----------------|----------------...

2009 Summer

2

Theory

CH3 - MOVEMENT IN AND OUT OF CELLS

Which diagram shows the appearance of a plant cell several minutes after it has been placed in a concentrated solution of sugar?

2009 Summer

1

Theory

CH3 - MOVEMENT IN AND OUT OF CELLS

The dots represent molecules of a gas in four tubes at the beginning of an experiment.In which tube will more molecules move from X to Y than in the o...

2009 Summer

1