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

Which organisms carry out respiration, growth, movement and excretion?

2018 Summer

1

MCQ

CH1 - CHARACTERISTICS AND CLASSIFICATION OF LIVING ORGANISMS

The diagram shows an animal whose scientific name is _Falco peregrinus_. To which species does it belong?

2018 Summer

2

MCQ

CH1 - CHARACTERISTICS AND CLASSIFICATION OF LIVING ORGANISMS

What kind of skin do amphibians have?

2018 Summer

3

MCQ

CH1 - CHARACTERISTICS AND CLASSIFICATION OF LIVING ORGANISMS

The diagram shows a flowering plant.Use the key to identify the plant.

2018 Summer

1

MCQ

CH2 - ORGANIZATION AND MAINTENANCE OF THE ORGANISM

In which part of the cell does aerobic respiration occur?

2018 Summer

2

MCQ

CH8 - TRANSPORT IN PLANTS

Why do some root cells have root hairs?

2018 Summer

2

MCQ

CH3 - MOVEMENT IN AND OUT OF CELLS

Which words correctly complete the paragraph? Diffusion may be defined as the net movement of particles from a region of their ......1...... concentr...

2018 Summer

2

MCQ

CH3 - MOVEMENT IN AND OUT OF CELLS

Which part of a plant root hair is partially permeable?

2018 Summer

2

MCQ

CH4 - BIOLOGICAL MOLECULES

The table shows the results of food tests carried out on a fruit.[Table_1]What did the fruit contain?

2018 Summer

1

MCQ

CH5 - ENZYMES

An experiment was carried out to investigate the effect of pH on enzyme action. The graph shows the results. What are the labels for the x-axis and...

2018 Summer

2