MCQ

CH8 - TRANSPORT IN MAMMALS

The following tissues carry an electrical impulse during the cardiac cycle.1. atrioventricular node2. muscle wall of atria3. Purkyne tissue4. sinoatri...

2024 Summer

2

MCQ

CH8 - TRANSPORT IN MAMMALS

The diagram shows the internal structure of the mammalian heart. Which letter identifies the location of the atrioventricular node?

2024 Summer

2

MCQ

CH8 - TRANSPORT IN MAMMALS

The graph shows changes in the volume of the ventricles during a single cardiac cycle.Which row is correct for the atrioventricular valve at P and for...

2024 Summer

2

MCQ

CH8 - TRANSPORT IN MAMMALS

The diagram shows pressure changes in the left side of the heart during the cardiac cycle. What happens in the heart at X?

2024 Summer

2

MCQ

CH8 - TRANSPORT IN MAMMALS

The graph shows how changes in oxygen concentration affect the percentage oxygen saturation of human haemoglobin and cat haemoglobin under normal phys...

2024 Summer

4

MCQ

CH8 - TRANSPORT IN MAMMALS

Which statement is correct about how oxygen combines with haemoglobin?

2024 Summer

6

MCQ

CH8 - TRANSPORT IN MAMMALS

Which components of blood are present in tissue fluid? [Table_1]

2024 Summer

3

MCQ

CH8 - TRANSPORT IN MAMMALS

Some babies are born with a hole between the right and left atria. These babies are found to have an increased number of red blood cells.What is the r...

2024 Winter

4

MCQ

CH8 - TRANSPORT IN MAMMALS

An increase in carbon dioxide in human blood shifts the oxyhaemoglobin dissociation curve to the right.What is the explanation for this effect?

2024 Winter

2

MCQ

CH8 - TRANSPORT IN MAMMALS

One type of congenital heart defect is where the left and right atria are not completely separated. This is called an atrial septal defect (ASD). ASD ...

2024 Spring

4

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