Theory

Photosynthesis

(a) Fig. 8.1 shows a scanning electron micrograph of a section through a leaf of the Christmas rose, *Helleborus niger*.   Name M and N. ...

2009 Summer

1

Theory

Photosynthesis

(a) In Queensland, Australia, the effect of the water-holding capacity of soil on the yield of sorghum and wheat was investigated. • Four test p...

2009 Winter

3

Theory

Photosynthesis

(a) In the majority of plants the leaf is the main photosynthetic organ. List four ways in which the structure of a dicotyledonous leaf is adapted for...

2009 Winter

2

Theory

Photosynthesis

Fig. 4.1 is a photomicrograph of a transverse section through the leaf of a C4 plant. (a) (i) Identify structures J to L. J  K L  (a)...

2010 Summer

Theory

Photosynthesis

(a) Explain how the palisade mesophyll cells of a leaf are adapted for photosynthesis. [8] (b) Outline the light-independent stage of photosynthesis....

2010 Summer

Theory

Photosynthesis

Cereal crops, such as sorghum and rice, are a major source of nutrients all over the world. (a) Explain why cereal crops are important components of ...

2010 Summer

Theory

Photosynthesis

(a) Describe the structure of photosystems and explain how a photosystem functions in cyclic photophosphorylation. [8] (b) Explain briefly how reduce...

2010 Summer

Theory

Photosynthesis

Cereal crops, such as sorghum and rice, are a major source of nutrients all over the world. (a) Explain why cereal crops are important components of ...

2010 Summer

Theory

Photosynthesis

(a) Describe the structure of photosystems and explain how a photosystem functions in cyclic photophosphorylation. [8] (b) Explain briefly how reduce...

2010 Summer

Theory

Photosynthesis

(a) In flowering plants, the light-dependent reactions are carried out by photosynthetic pigments which fall into two categories: primary pigments and...

2010 Winter

1

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

6

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

Mechanism of Enzyme Action

(a) With reference to Fig. 4.1, (i) name process A  molecule B  structure C  sequence of bases D  (ii) state two ways ...

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

3

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

4

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