Theory

CH13 - PHOTOSYNTHESIS

(a) Fig. 8.1 shows a scanning electron micrograph of a section through a leaf of the Christmas rose, *Helleborus niger*.[Image_1: Fig. 8.1]Name M and ...

2009 Summer

Theory

CH13 - PHOTOSYNTHESIS

(a) Fig. 8.1 shows the results from two experiments carried out to investigate the effect of light intensity and carbon dioxide concentration on the r...

2009 Winter

Theory

CH13 - 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 plots ...

2009 Winter

Theory

CH13 - 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

Theory

CH13 - 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 ..............................

2010 Summer

Theory

CH13 - 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

CH13 - 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 ma...

2010 Summer

Theory

CH13 - PHOTOSYNTHESIS

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

2010 Summer

Theory

CH13 - 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 ma...

2010 Summer

Theory

CH13 - PHOTOSYNTHESIS

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

2010 Summer

MCQ

CH1 - CELL STRUCTURE

What are the appropriate units for measuring diameters of alveoli, diameters of white blood cells and the width of cell walls?[Table_1]

2015 Summer

MCQ

CH1 - CELL STRUCTURE

The diagram shows a high-power drawing of a bacterium. Which three components are found in both this bacterium and an animal cell?

2015 Summer

MCQ

CH1 - CELL STRUCTURE

The diagram shows a stage micrometer scale on which the small divisions are 0.1 mm. It is viewed through an eyepiece containing a graticule. The st...

2015 Summer

MCQ

CH1 - CELL STRUCTURE

Which structures are found in typical eukaryotic cells?1. 70S ribosomes2. 80S ribosomes3. linear DNA (chromosomes)4. circular DNA

2015 Summer

MCQ

CH1 - CELL STRUCTURE

What is the function of the nucleolus?

2015 Summer

MCQ

CH1 - CELL STRUCTURE

The electronmicrograph shows a cell. What is the actual diameter of the nucleus?

2015 Summer

MCQ

CH2 - BIOLOGICAL MOLECULES

A student carried out four tests for biological molecules on a solution. The observations are shown in the table.[Table_1]Which molecules may be prese...

2015 Summer

MCQ

CH2 - BIOLOGICAL MOLECULES

The diagrams show different types of bond found in biological molecules.Which combination of bonds could not be found in a protein with a tertiary str...

2015 Summer

MCQ

CH2 - BIOLOGICAL MOLECULES

Which row shows the correct match between the descriptions of biological molecules and where they are found?1 a linear polymer of 1,4 linked β-glucos...

2015 Summer

MCQ

CH2 - BIOLOGICAL MOLECULES

Which is the correct description for the structure of amylose and cellulose? [Table_1]

2015 Summer