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

2

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

1

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

1

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

Which characteristic do all living organisms show?

2017 Summer

1

MCQ

CH2 - ORGANIZATION AND MAINTENANCE OF THE ORGANISM

The diagram shows some animal cells, as seen under the microscope. What will be present at X?

2017 Summer

2

MCQ

CH1 - CHARACTERISTICS AND CLASSIFICATION OF LIVING ORGANISMS

Each of the diagrams shows an area of cytoplasm.Which is from a prokaryote?

2017 Summer

2

MCQ

CH2 - ORGANIZATION AND MAINTENANCE OF THE ORGANISM

The diagram shows a section through a root.What are the levels of organisation of the labelled structures?

2017 Summer

2

MCQ

CH3 - MOVEMENT IN AND OUT OF CELLS

Which characteristics are correct for both osmosis and diffusion? [Table_1]

2017 Summer

2

MCQ

CH20 - BIOTECHNOLOGY AND GENETIC ENGINEERING

Which diagram shows the structure of DNA?

2017 Summer

2

MCQ

CH5 - ENZYMES

The graph shows how enzyme activity is affected by temperature. How can the change in activity between 40°C and 55°C be explained?

2017 Summer

3

MCQ

CH12 - RESPIRATION

Four test-tubes are set up as shown. Which test-tube contains the most carbon dioxide after one hour?

2017 Summer

3

MCQ

CH12 - RESPIRATION

The graph shows daily carbon dioxide uptake and transpiration by the plant *Agave americana*. The plant is adapted to live in very dry conditions. ...

2017 Summer

3

MCQ

CH6 - PLANT NUTRITION

In plants, which ions are used to make amino acids?

2017 Summer

2