MCQ

CH7 - TRANSPORT IN PLANTS

Which row correctly identifies sinks for sucrose transported by mass flow in plants? [Table_1]

2024 Summer

3

MCQ

CH7 - TRANSPORT IN PLANTS

The diagram shows a transverse section through a transport tissue in a plant.Which row correctly identifies cell 1 and cell 2?

2024 Summer

3

MCQ

CH7 - TRANSPORT IN PLANTS

The electron micrograph shows a longitudinal section of part of the stem of a plant. What is the name of the structure labelled X?

2024 Summer

5

MCQ

CH7 - TRANSPORT IN PLANTS

Which statement correctly describes the movement of solutes in the symplast pathway?

2024 Summer

3

MCQ

CH7 - TRANSPORT IN PLANTS

Which substance makes xylem vessel walls impermeable to water?

2024 Summer

5

MCQ

CH7 - TRANSPORT IN PLANTS

Which statement helps to explain why water molecules are forced to move through xylem vessel elements as a consequence of transpiration?

2024 Summer

4

MCQ

CH7 - TRANSPORT IN PLANTS

Which statement correctly identifies the movement of sucrose and amino acids in plant vascular tissue?

2024 Winter

3

MCQ

CH7 - TRANSPORT IN PLANTS

Xylem vessel elements are specialised cells that are adapted for the transport of water.Which statement correctly matches an adaptation of a xylem ves...

2024 Winter

3

MCQ

CH7 - TRANSPORT IN PLANTS

Which statement correctly describes the association between a companion cell and its sieve tube cell?

2024 Spring

3

MCQ

CH7 - TRANSPORT IN PLANTS

A maize seedling was grown in soil that contained lanthanum ions labelled with a chemical that fluoresces under ultraviolet light. The diagram represe...

2024 Spring

3

Theory

CH1 - CELL STRUCTURE

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

2013 Summer

2

Theory

CH10 - INFECTIOUS DISEASE

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

2013 Summer

2

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

1

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

1

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

2

Theory

CH5 - THE MITOTIC CELL CYCLE

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

2013 Summer

2

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

2

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

2

Theory

CH10 - INFECTIOUS DISEASE

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

2013 Summer

3

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

3