MCQ

CH11 - IMMUNITY

An antibiotic inhibits the formation of cross-links between the molecules that form cell walls in bacteria. Which statements explain why bacteria are...

2024 Summer

3

MCQ

CH11 - IMMUNITY

How does the antibiotic penicillin affect the metabolism of a bacterial cell?

2024 Summer

5

MCQ

CH11 - IMMUNITY

Scientists investigated the effect of increasing concentrations of an antibiotic on the development of antibiotic resistance in bacteria.The scientist...

2024 Summer

4

MCQ

CH11 - IMMUNITY

Scientists studied the multidrug-resistant bacterial infections in children caused by one type of bacteria between 2007 and 2015. The percentage of mu...

2024 Summer

4

MCQ

CH11 - IMMUNITY

What is the correct sequence of events in a primary immune response?

2024 Summer

3

MCQ

CH11 - IMMUNITY

Whooping cough is a highly infectious disease of the gas exchange system, caused by the bacterium Bordetella pertussis.Which method provides protectio...

2024 Summer

4

MCQ

CH11 - IMMUNITY

Monoclonal antibodies are now being used to treat some human diseases.What explains why monoclonal antibodies are suitable for this purpose?1 They can...

2024 Spring

3

MCQ

CH11 - IMMUNITY

Which statement about the properties of the antigen-binding sites in different antibody molecules is correct?

2024 Summer

3

MCQ

CH11 - IMMUNITY

What will be produced by the division of memory cells during a secondary immune response?

2024 Winter

4

MCQ

CH11 - IMMUNITY

Why is mitosis important in the immune response?

2024 Summer

6

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