MCQ

CH8 - TRANSPORT IN MAMMALS

The graph shows the percentage saturation of haemoglobin with oxygen at different partial pressures of oxygen. Which range of partial pressures of ox...

2009 Winter

MCQ

CH8 - TRANSPORT IN MAMMALS

Below are correct statements comparing blood, tissue fluid and lymph in a capillary bed. • W lacks large plasma proteins and red blood cells and has...

2009 Winter

MCQ

CH8 - TRANSPORT IN MAMMALS

The graph shows the percentage saturation of haemoglobin with oxygen at different partial pressures of oxygen.Which range of partial pressures of oxyg...

2009 Winter

Theory

CH8 - TRANSPORT IN MAMMALS

(a) Fig. 3.1 shows a cross-section of the heart at the level of the valves.[Image_1: Fig. 3.1](i) Complete the following flow chart to show the pathwa...

2010 Summer

Theory

CH8 - TRANSPORT IN MAMMALS

Fig. 2.1 is a diagram of a vertical section through a healthy mammalian heart. (a) (i) Label the two chambers of the heart by writing in the boxes pro...

2010 Summer

Theory

CH8 - TRANSPORT IN MAMMALS

Fig. 2.1 shows a diagram of a section through a human heart.(a) State the name and function of the circled structure labelled X.name ....................

2010 Summer

Theory

CH8 - TRANSPORT IN MAMMALS

(a) The glycoproteins CD28 and CD40 are found on the surface of T-lymphocytes (T-cells). They are binding sites for cell-signalling molecules and are ...

2010 Summer

MCQ

CH8 - TRANSPORT IN MAMMALS

The mammalian circulatory system is described as a closed double circulation.The diagram shows the circulatory system in a different organism. The arr...

2010 Winter

MCQ

CH8 - TRANSPORT IN MAMMALS

The diagram shows the valves inside the heart. Which valves are open or closed when the atria are relaxed and the ventricles contracted?

2010 Winter

MCQ

CH8 - TRANSPORT IN MAMMALS

When red cells leave the lungs, haemoglobin is 98% saturated.How many molecules of oxygen will be carried by the majority of haemoglobin molecules?

2010 Winter

Theory

CH1 - CELL STRUCTURE

(a) (i) Name the cells labelled A and the structure labelled B.A ........................................................................................

2013 Summer

Theory

CH10 - INFECTIOUS DISEASE

(a) Explain how the virus that causes measles is transmitted.............................................................................................

2013 Summer

Theory

CH7 - TRANSPORT IN PLANTS

(a) Transpiration is often described as an 'inevitable consequence of gas exchange in plants'.Explain what is meant by this statement....................

2013 Summer

Theory

CH6 - NUCLEIC ACIDS AND PROTEIN SYNTHESIS

Fig. 4.1 shows the two base pairs in a DNA molecule.(a) Name the bases labelled J and K and the bond labelled L.J .......................................

2013 Summer

Theory

CH4 - CELL MEMBRANES AND TRANSPORT

Fig. 5.1 shows a section of a cell surface membrane.(a) State the functions of structures P, Q and R.P ..................................................

2013 Summer

Theory

CH5 - THE MITOTIC CELL CYCLE

(a) Explain how uncontrolled cell division can result in cancer. ........................................................................................

2013 Summer

Theory

CH5 - THE MITOTIC CELL CYCLE

(a) The cells in Fig. 1.1 are from the same organism and look the same. The cells in Fig. 1.1(a) have been produced by mitosis and the cells in Fig. 1...

2013 Summer

Theory

CH7 - TRANSPORT IN PLANTS

Fig. 2.1 shows xylem tissue in a longitudinal section through the stem of a dicotyledonous plant. [Image_1: Fig. 2.1] (a) Describe and explain how the...

2013 Summer

Theory

CH10 - INFECTIOUS DISEASE

(a) Explain why tuberculosis (TB) is known as an infectious disease......................................................................................

2013 Summer

Theory

CH2 - BIOLOGICAL MOLECULES

Polysaccharides are synthesised by condensation reactions between monosaccharide or disaccharide subunits (monomers).(a) Name the type of bond formed ...

2013 Summer