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..............................

2009 Summer

MCQ

CH7 - TRANSPORT IN PLANTS

Which plan diagram of a transverse section of a leaf correctly shows the position of xylem and phloem as well as the fact that the palisade mesophyll ...

2009 Winter

MCQ

CH7 - TRANSPORT IN PLANTS

The diagram shows the changes in pressure potential ($\Psi_p$), solute potential ($\Psi_s$) and water potential ($\Psi$) when a plasmolysed plant cell...

2009 Winter

MCQ

CH7 - TRANSPORT IN PLANTS

What is the sequence of events in the translocation of assimilates?

2009 Winter

MCQ

CH7 - TRANSPORT IN PLANTS

When stained, which features, visible under the light microscope, are part of the cells of the plant tissues listed in the table?[Table_1]

2009 Winter

MCQ

CH7 - TRANSPORT IN PLANTS

What is the sequence of events in the translocation of assimilates?

2009 Winter

MCQ

CH7 - TRANSPORT IN PLANTS

Which description states some of the features of xylem vessels?

2009 Winter

MCQ

CH7 - TRANSPORT IN PLANTS

The diagram shows the changes in pressure potential ($\Psi_p$), solute potential ($\Psi_s$), and water potential ($\Psi$) when a plasmolysed plant cel...

2009 Winter

MCQ

CH7 - TRANSPORT IN PLANTS

When stained, which features, visible under the light microscope, are part of the cells of the plant tissues listed in the table? [Table_1]

2009 Winter

Theory

CH7 - TRANSPORT IN PLANTS

(a) Explain what is meant by the term transpiration......................................................................................................

2009 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