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

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

Theory

CH11 - GAS EXCHANGE IN HUMANS

From the graph, when did the person begin a period of vigorous exercise after resting?

2009 Winter

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

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

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

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

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 wallsB large surface and th...

2010 Winter

Theory

CH11 - GAS EXCHANGE IN HUMANS

What are the effects of smoking on the gas exchange system?[Table_1]mucus in the airwayschance of lung infectionAdecreaseddecreasedBdecreasedincreased...

2010 Winter

Theory

CH11 - GAS EXCHANGE IN HUMANS

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

2010 Winter

Theory

CH1 - CHARACTERISTICS AND CLASSIFICATION OF LIVING ORGANISMS

What is defined as the chemical reactions that break down food molecules in cells to release energy?A excretionB movementC nutritionD respiration

2010 Summer

Theory

CH1 - CHARACTERISTICS AND CLASSIFICATION OF LIVING ORGANISMS

The diagram shows an arthropod animal. Which features are characteristic of all arthropods?A. jointed legs and segmented bodyB. jointed legs and thora...

2010 Summer

Theory

CH1 - CHARACTERISTICS AND CLASSIFICATION OF LIVING ORGANISMS

The diagram shows a section through a flower.Using the key, identify this flower.1. sepals present .................................................. ...

2010 Summer

Theory

CH2 - ORGANIZATION AND MAINTENANCE OF THE ORGANISM

Which row shows the most likely number of chloroplasts in three types of cell in a leaf?[Table_1]

2010 Summer

Theory

CH2 - ORGANIZATION AND MAINTENANCE OF THE ORGANISM

The diagram shows some liver cells as they appear under the microscope. How many cell walls can be seen?A 0 B 2 C 3 D 5

2010 Summer

Theory

CH2 - ORGANIZATION AND MAINTENANCE OF THE ORGANISM

Which row shows the structures present in plant and animal cells?[Table_1: | | cell wall | cytoplasm | nucleus | cell membrane ||--------|-----...

2010 Summer

Theory

CH2 - ORGANIZATION AND MAINTENANCE OF THE ORGANISM

Which structure is at a different level of organisation from the other three?A) kidneyB) liverC) neuroneD) testis

2010 Summer

Theory

CH2 - ORGANIZATION AND MAINTENANCE OF THE ORGANISM

Which diagram shows one organ only?[Image_1 with diagrams labeled A, B, C, D]

2010 Summer

Theory

CH3 - MOVEMENT IN AND OUT OF CELLS

On a dry, sunny day, how does water vapour move through the stomata of a leaf?A. into the leaf by diffusionB. into the leaf by osmosisC. out of the le...

2010 Summer

Theory

CH3 - MOVEMENT IN AND OUT OF CELLS

The diagram shows an experiment using a potato.Which shows the result of the experiment after 24 hours?ABCD

2010 Summer