MCQ

CH2 - BIOLOGICAL MOLECULES

Which combination of procedures would not be used in a food test? [Table_1: use heat | use biuret reagent | use Benedict’s reagent | boil with dilu...

2009 Winter

MCQ

CH2 - BIOLOGICAL MOLECULES

The diagram shows a triglyceride molecule that has been partially hydrolysed. What will be the products of the total hydrolysis of the molecule shown?

2009 Winter

MCQ

CH2 - BIOLOGICAL MOLECULES

The diagram shows a tripeptide molecule. At which two points will hydrolysis occur to release three amino acids?

2009 Winter

MCQ

CH2 - BIOLOGICAL MOLECULES

Which combination of bond types correctly shows the weak and strong bonds that hold a molecule of protein in shape? [Table_1: types of bond] hydroge...

2009 Winter

MCQ

CH2 - BIOLOGICAL MOLECULES

Which features of collagen result in it having high tensile strength?1. covalent bonds form between adjacent molecules2. each three-stranded molecule ...

2009 Winter

MCQ

CH2 - BIOLOGICAL MOLECULES

HIV-1 protease is an enzyme produced by the HIV virus.Two identical chains of 99 amino acids form the enzyme. In each chain, amino acids 25, 26 and 27...

2009 Winter

MCQ

CH2 - BIOLOGICAL MOLECULES

Which combination of bond types correctly shows the weak and strong bonds that hold a molecule of protein in shape?[Table showing types of bond: hydro...

2009 Winter

MCQ

CH2 - BIOLOGICAL MOLECULES

Which statement is true for cellulose, but not true for protein?

2009 Winter

MCQ

CH2 - BIOLOGICAL MOLECULES

The diagram shows a triglyceride molecule that has been partially hydrolysed. What will be the products of the total hydrolysis of the molecule show...

2009 Winter

MCQ

CH2 - BIOLOGICAL MOLECULES

The diagram shows a tripeptide molecule. At which two points will hydrolysis occur to release three amino acids?

2009 Winter

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

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

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

Theory

CH6 - NUCLEIC ACIDS AND PROTEIN SYNTHESIS

(a) With reference to Fig. 4.1,(i) nameprocess A ..............................................................molecule B ...............................

2009 Summer

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

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

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

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

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

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