Theory

CH10 - DISEASES AND IMMUNITY

The graph shows the effect of an antibiotic treatment on bacterial populations in the blood. What conclusion can be drawn from the graph?A. Antibiotic...

2014 Summer

3

Theory

CH10 - DISEASES AND IMMUNITY

The graph shows the effect of an antibiotic treatment on bacterial populations in the blood.What conclusion can be drawn from the graph?A Antibiotics ...

2014 Summer

2

Theory

CH10 - DISEASES AND IMMUNITY

Meningitis is a transmissible disease. One form of the disease is caused by the bacterium Neisseria meningitidis. (a) Define the term transmissible d...

2017 Summer

2

Theory

CH10 - DISEASES AND IMMUNITY

Microbiologists test strains of bacteria for antibiotic resistance. They do this by soaking paper discs in antibiotics and placing them on bacteria gr...

2018 Winter

2

Theory

CH10 - DISEASES AND IMMUNITY

(a) (i) State the function of mitochondria. ............................................................................................................

2017 Winter

1

Theory

CH10 - DISEASES AND IMMUNITY

(a) (i) Bacteria are prokaryotes.State two distinguishing features of all prokaryotes.1 .................................................................

2016 Summer

2

Theory

CH10 - DISEASES AND IMMUNITY

Complete the table by calculating the percentage of platelets. Write your answer in Table 5.1 to two decimal places.[1] [Table_5.1](b) State the role ...

2016 Winter

2

Theory

CH10 - DISEASES AND IMMUNITY

The genes for antibodies are only active in lymphocytes.(a) Define the term gene.........................................................................

2017 Summer

2

Theory

CH10 - DISEASES AND IMMUNITY

Fig. 1.1 and Fig. 1.2 show two images of villi.Fig. 1.1 shows a surface view of many villi viewed through a scanning electron microscope.Fig. 1.2 show...

2017 Winter

2

Theory

CH10 - DISEASES AND IMMUNITY

(a) Cell R is a prokaryote and cell S is a lymphocyte.(i) State the names of two cellular structures that would be found in both prokaryotes and white...

2017 Summer

2

MCQ

CH1 - CHARACTERISTICS AND CLASSIFICATION OF LIVING ORGANISMS

The diagram shows a leaf on a plant.Which characteristic of life is represented by this diagram?

2019 Summer

2

MCQ

CH1 - CHARACTERISTICS AND CLASSIFICATION OF LIVING ORGANISMS

The diagram shows how _Homo sapiens_ (modern people) could have evolved from earlier ancestors.Which statement about modern people and their ancestors...

2019 Summer

1

MCQ

CH2 - ORGANIZATION AND MAINTENANCE OF THE ORGANISM

The photomicrograph shows part of an animal cell.What is the structure labelled X?

2019 Summer

2

MCQ

CH2 - ORGANIZATION AND MAINTENANCE OF THE ORGANISM

Which features are possessed by all plant cells? [Table_1]

2019 Summer

2

MCQ

CH2 - ORGANIZATION AND MAINTENANCE OF THE ORGANISM

The diagram shows part of the skin. What is the correct level of organisation for the skin?

2019 Summer

2

MCQ

CH3 - MOVEMENT IN AND OUT OF CELLS

The diagram shows a test-tube containing clear jelly. A drop of blue ink is injected into the middle of the jelly.The blue colour of the ink spreads t...

2019 Summer

1

MCQ

CH3 - MOVEMENT IN AND OUT OF CELLS

The apparatus shown was set up. Some hours later, the water in the beaker had turned blue, and the liquid in the glass tube had moved upwards.Which pr...

2019 Summer

2

MCQ

CH4 - BIOLOGICAL MOLECULES

Four solutions were tested to see whether they contained protein, starch or glucose.The colours of the solutions after the tests are recorded in the t...

2019 Summer

2

MCQ

CH4 - BIOLOGICAL MOLECULES

Small molecules are used as the basic units in the synthesis of large food molecules. Which statement is correct?

2019 Summer

2

MCQ

CH5 - ENZYMES

The diagrams show a protease enzyme catalysing the breaking of part of a protein molecule into smaller pieces.Which diagram has three correct labels?

2019 Summer

2