MCQ

CH10 - INFECTIOUS DISEASE

Which disease does \textit{Mycobacterium bovis} cause?

2024 Summer

3

MCQ

CH10 - INFECTIOUS DISEASE

A scientist investigated the effect of an antibiotic on the treatment of cholera.320 people with cholera were divided into two groups. One group was t...

2024 Summer

3

MCQ

CH10 - INFECTIOUS DISEASE

Which structures or compounds are present in a typical cell that can be killed by penicillin?1. circular DNA2. cytoplasmic DNA3. 70S ribosomes4. pepti...

2024 Winter

2

MCQ

CH10 - INFECTIOUS DISEASE

Antibiotic-resistant strains of \textit{Mycobacterium tuberculosis} are a major problem when treating TB. A new antibiotic, teixobactin, could be very...

2024 Spring

4

MCQ

CH10 - INFECTIOUS DISEASE

Three statements about cholera and its transmission are listed. 1 The pathogen causes watery faeces. 2 Frequent air flight has led to mobile populatio...

2024 Winter

2

Theory

CH10 - INFECTIOUS DISEASE

The Zika virus is a pathogen that can infect human cells. (a) Fig. 1.1 is a drawing of the structure of a Zika virus. (i) In Fig. 1.1, structure A ...

2024 Summer

2

Theory

CH10 - INFECTIOUS DISEASE

People who become infected with human immunodeficiency virus (HIV) are at risk of developing HIV/AIDs, particularly if antiretroviral therapy (ART) is...

2024 Winter

3

Theory

CH10 - INFECTIOUS DISEASE

(a) Fig. 3.1 is a photomicrograph of a transverse section through a region of the wall of the bronchus in the gas exchange system. [Image_1: Fig. 3.1...

2024 Winter

4

Theory

CH10 - INFECTIOUS DISEASE

(a) A class of students was studying the features of some human pathogens. One of the students constructed a flow chart to identify four different hum...

2024 Summer

3

Theory

CH10 - INFECTIOUS DISEASE

Malaria is an infectious disease caused by the protocist, Plasmodium.As part of its lifecycle, Plasmodium infects human red blood cells. Researchers c...

2024 Winter

2

MCQ

CH1 - CELL STRUCTURE

The actual length of a cell structure is 8 µm. Which steps are used to calculate the magnification of an electron micrograph of this cell structure?...

2019 Summer

5

MCQ

CH1 - CELL STRUCTURE

What is the typical resolution of a microscope using daylight as a light source with a ×10 eyepiece lens and a ×40 objective lens?

2019 Summer

3

MCQ

CH1 - CELL STRUCTURE

Two different types of cell, P and Q, were broken up using ultrasound and their contents analysed. Both types of cell contained small circular DNA. Th...

2019 Summer

4

MCQ

CH1 - CELL STRUCTURE

Which features shown in the diagram can be present in viruses?

2019 Summer

3

MCQ

CH2 - BIOLOGICAL MOLECULES

After boiling a sample of milk with Benedict’s solution, a yellow colour is observed. Which conclusion about the sample of milk is correct?

2019 Summer

3

MCQ

CH2 - BIOLOGICAL MOLECULES

Which of the statements about polysaccharides can be used to describe amylose and cellulose?1. contains 1,4 glycosidic bonds2. contains 1,6 glycosidic...

2019 Summer

3

MCQ

CH2 - BIOLOGICAL MOLECULES

Which diagram shows the formation of a peptide bond?

2019 Summer

3

MCQ

CH3 - ENZYMES

In enzyme-catalysed reactions, the position of the amino acids found at the active site is important. During the synthesis of enzymes, amino acids are...

2019 Summer

3

MCQ

CH2 - BIOLOGICAL MOLECULES

Which features affect the tensile strength of collagen?1 the helical structure of collagen chains2 the small R group of the amino acids in collagen3 t...

2019 Summer

3

MCQ

CH3 - ENZYMES

A fixed volume of the enzyme catalase was added to a fixed volume of hydrogen peroxide solution. The diagram shows how the concentration of product ch...

2019 Summer

3