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

Which group of structures are visible in a suitably stained plant cell using a high power (x400) light microscope? [Table_1]

2012 Summer

3

MCQ

CH1 - CELL STRUCTURE

What are always present in prokaryote cells?

2012 Summer

3

MCQ

CH1 - CELL STRUCTURE

The following are all features of eukaryotic cells.1. chloroplast2. endoplasmic reticulum3. lysosome4. mitochondrion5. nucleusWhich of these have a do...

2012 Summer

4

MCQ

CH1 - CELL STRUCTURE

The magnification of the photomicrograph is \times 4000. What is the actual size of the nucleolus?

2012 Summer

3

MCQ

CH1 - CELL STRUCTURE

A microscope has a resolution of 200 nm. Which of the following organelles would not be resolved using this microscope?

2012 Summer

3

MCQ

CH1 - CELL STRUCTURE

Tests were performed on samples from a mixture of biological molecules.When iodine in potassium iodide solution was added to a sample, the mixture tur...

2012 Summer

3

MCQ

CH2 - BIOLOGICAL MOLECULES

Which of the statements about polysaccharides can be used to describe both amylopectin and cellulose? 1. adjacent glucose molecules are rotated by 180...

2012 Summer

3

MCQ

CH2 - BIOLOGICAL MOLECULES

Which molecule in the key is sucrose?

2012 Summer

3

MCQ

CH2 - BIOLOGICAL MOLECULES

Which molecules have a structural formula that contains C=O bonds?1. fatty acids2. glucose3. glycerol

2012 Summer

2

MCQ

CH2 - BIOLOGICAL MOLECULES

Which level of protein structure maintains the globular shapes of enzymes?

2012 Summer

5