MCQ

CH9 - GAS EXCHANGE AND SMOKING

In the lungs, movement of dissolved carbon dioxide out of the capillaries occurs in one of two ways:• by diffusion through the endothelial cells of ...

2024 Summer

3

MCQ

CH9 - GAS EXCHANGE AND SMOKING

How are alveoli adapted to their function?

2024 Summer

4

MCQ

CH9 - GAS EXCHANGE AND SMOKING

What maintains the steep concentration gradients needed for successful gas exchange in the lungs?1. Air flow in the alveoli is in the opposite directi...

2024 Summer

3

MCQ

CH9 - GAS EXCHANGE AND SMOKING

The diagram shows oxygen diffusing from the space inside an alveolus into the blood through the gaseous exchange surface.What would increase the rate ...

2024 Summer

6

MCQ

CH9 - GAS EXCHANGE AND SMOKING

Where is cartilage tissue always found in the human gas exchange system?

2024 Summer

4

MCQ

CH9 - GAS EXCHANGE AND SMOKING

Which tissues are present in a bronchus? [Table_1]

2024 Summer

5

MCQ

CH9 - GAS EXCHANGE AND SMOKING

Scientists compared the density of goblet cells in the lungs and the density of mucus in the lungs of three groups of people: • people who do not s...

2024 Summer

3

MCQ

CH9 - GAS EXCHANGE AND SMOKING

Steep concentration gradients must be maintained for efficient gaseous exchange to occur in the human lungs. Which row correctly describes how steep ...

2024 Summer

7

MCQ

CH9 - GAS EXCHANGE AND SMOKING

What is the function of cilia in the gas exchange system?

2024 Winter

4

MCQ

CH9 - GAS EXCHANGE AND SMOKING

Which tissues are present in the walls of a trachea and an alveolus? [Table_1: tissue table with epithelium with goblet cells and smooth muscle prese...

2024 Winter

4

MCQ

CH1 - CELL STRUCTURE

What are the appropriate units for measuring diameters of alveoli, diameters of white blood cells and the width of cell walls?[Table_1]

2015 Summer

1

MCQ

CH1 - CELL STRUCTURE

The diagram shows a high-power drawing of a bacterium. Which three components are found in both this bacterium and an animal cell?

2015 Summer

1

MCQ

CH1 - CELL STRUCTURE

The diagram shows a stage micrometer scale on which the small divisions are 0.1 mm. It is viewed through an eyepiece containing a graticule. The st...

2015 Summer

1

MCQ

CH1 - CELL STRUCTURE

Which structures are found in typical eukaryotic cells?1. 70S ribosomes2. 80S ribosomes3. linear DNA (chromosomes)4. circular DNA

2015 Summer

1

MCQ

CH1 - CELL STRUCTURE

What is the function of the nucleolus?

2015 Summer

1

MCQ

CH1 - CELL STRUCTURE

The electronmicrograph shows a cell. What is the actual diameter of the nucleus?

2015 Summer

1

MCQ

CH2 - BIOLOGICAL MOLECULES

A student carried out four tests for biological molecules on a solution. The observations are shown in the table.[Table_1]Which molecules may be prese...

2015 Summer

1

MCQ

CH2 - BIOLOGICAL MOLECULES

The diagrams show different types of bond found in biological molecules.Which combination of bonds could not be found in a protein with a tertiary str...

2015 Summer

1

MCQ

CH2 - BIOLOGICAL MOLECULES

Which row shows the correct match between the descriptions of biological molecules and where they are found?1 a linear polymer of 1,4 linked β-glucos...

2015 Summer

2

MCQ

CH2 - BIOLOGICAL MOLECULES

Which is the correct description for the structure of amylose and cellulose? [Table_1]

2015 Summer

1