Theory

CH19 - GENETIC TECHNOLOGY

(a) Describe the role of insulin in the regulation of blood glucose concentration........................................................................

2009 Summer

Theory

CH19 - GENETIC TECHNOLOGY

(a) Hormones are secreted by endocrine glands.Explain what is meant by the term _endocrine gland_........................................................

2009 Winter

Theory

CH19 - GENETIC TECHNOLOGY

(a) A husband and wife who already have a child with cystic fibrosis (CF) elected to have their second child tested for the condition while still a fe...

2009 Winter

Theory

CH19 - GENETIC TECHNOLOGY

(a) Cystic fibrosis (CF) is an inherited disease.(i) Explain briefly how two parents who do not have CF may have a child with CF.........................

2010 Summer

Theory

CH19 - GENETIC TECHNOLOGY

Gene technology has many uses including the production of substances such as insulin.(a) (i) Outline what is meant by gene technology....................

2010 Summer

Theory

CH19 - GENETIC TECHNOLOGY

Gene technology has many uses including the production of substances such as insulin.(a) (i) Outline what is meant by gene technology....................

2010 Summer

Theory

CH19 - GENETIC TECHNOLOGY

(a) With reference to Fig. 3.1, explain why women are treated with hormones for two weeks after being given drugs to suppress ovulation at the beginni...

2010 Winter

Theory

CH19 - GENETIC TECHNOLOGY

The secretion of insulin by the islets of Langerhans in the pancreas stimulates the liver to reduce the blood glucose concentration.(a) Describe how t...

2010 Winter

Theory

CH19 - GENETIC TECHNOLOGY

(a) With reference to Fig. 3.1, explain why women are treated with hormones for two weeks after being given drugs to suppress ovulation at the beginni...

2010 Winter

Theory

CH19 - GENETIC TECHNOLOGY

The secretion of insulin by the islets of Langerhans in the pancreas stimulates the liver to reduce the blood glucose concentration.(a) Describe how t...

2010 Winter

MCQ

CH1 - CELL STRUCTURE

Which statements about resolution and magnification are correct?[Table_1]

2018 Summer

MCQ

CH1 - CELL STRUCTURE

An eyepiece graticule has a scale with 100 divisions. A stage micrometer has a scale with 50 divisions, each of which is 0.040 mm apart. Using a ×40 ...

2018 Summer

MCQ

CH1 - CELL STRUCTURE

A prokaryotic cell which is 1 µm in diameter, is magnified 50000 times in an electron micrograph. What is the diameter of the cell in the electron m...

2018 Summer

MCQ

CH1 - CELL STRUCTURE

A scientist carried out an experiment to separate cell structures in animal cells. The cells were broken open to release the cell structures. This ext...

2018 Summer

MCQ

CH1 - CELL STRUCTURE

Radioactively-labelled nucleotides are introduced into a cell.In which cell structures will the radioactivity first become concentrated?

2018 Summer

MCQ

CH2 - BIOLOGICAL MOLECULES

What is the general formula for amylose?

2018 Summer

MCQ

CH2 - BIOLOGICAL MOLECULES

The diagram shows relationships between some important molecules and bonds. What is represented by circles numbered 1, 2 and 3?

2018 Summer

MCQ

CH2 - BIOLOGICAL MOLECULES

In unsaturated lipid molecules, where are double bonds located?

2018 Summer

MCQ

CH2 - BIOLOGICAL MOLECULES

Phospholipids and triglycerides are important biological molecules.Which properties are correct for these molecules?[Table_1]

2018 Summer

MCQ

CH2 - BIOLOGICAL MOLECULES

The diagrams show two arrangements of amino acids in a protein. Which row correctly names the bonds at S or T?

2018 Summer