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

Theory

CH1 - CELL STRUCTURE

Fig. 1.1 shows the outline of a ciliated cell from the human gas exchange system.(a) (i) Inside the ciliated cell in Fig. 1.1, draw the nuclear envelo...

2009 Summer

2

Theory

CH18 - BIODIVERSITY, CLASSIFICATION AND CONSERVATION

(a) The table below gives some terms that are used in ecology and their definitions. Complete the table.termdefinitionecosystemall the organisms and t...

2009 Summer

2

Theory

CH4 - CELL MEMBRANES AND TRANSPORT

(a) With reference to Fig. 3.1 and the information above, explain how flatworms survive without a transport system for respiratory gases. ...............

2009 Summer

2

Theory

CH6 - NUCLEIC ACIDS AND PROTEIN SYNTHESIS

(a) With reference to Fig. 4.1,(i) nameprocess A ..............................................................molecule B ...............................

2009 Summer

3

Theory

CH7 - TRANSPORT IN PLANTS

Fig. 5.1 shows part of a transverse section of a leaf.   (a) Explain, in terms of water potential, how water moves from Q to R. [4] (b)...

2009 Summer

2

Theory

CH5 - THE MITOTIC CELL CYCLE

(a) Fig. 6.1 is an electron micrograph of a cancer cell in the process of dividing by mitosis. The stage of mitosis visible in Fig. 6.1 is metaphase.S...

2009 Summer

3

Theory

CH1 - CELL STRUCTURE

Yeast cells contain enzymes, which catalyse the breakdown of glucose to produce ethanol and carbon dioxide. These products change the environment of t...

2009 Summer

2

Theory

CH1 - CELL STRUCTURE

J1 is a slide of a stained transverse section of a plant organ.(a) Draw a large, low power, plan diagram of a quarter of the specimen as shown in Fig....

2009 Summer

1

Theory

CH1 - CELL STRUCTURE

(a) (i) Using the information in Table 1.1, decide which other concentrations to make and complete Table 1.2 including the concentrations from Table 1...

2009 Summer

2

Theory

CH1 - CELL STRUCTURE

K1 is a slide of a stained transverse section of a plant organ.(a) (i) Draw a large, low power plan diagram of one end of the specimen on K1 as shown ...

2009 Summer

3