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

Theory

CH11 - GAS EXCHANGE IN HUMANS

(a) Fig. 1.1 is a diagram of the human gas exchange system. (i) Identify the structures labelled A, B and C in Fig. 1.1.A ...............................

2020 Spring

2

Theory

CH9 - TRANSPORT IN ANIMALS

(a) Fig. 2.1 shows the transfer of materials between blood and tissues.(i) Complete Table 2.1 by:• stating the names of the fluids• writing yes if...

2020 Spring

2

Theory

Role of Adrenaline

(a) One of the characteristics of living organisms is sensitivity. Define the term sensitivity. (2) (b) State the names of two sense organs. (1) (c...

2020 Spring

2

Theory

CH7 - HUMAN NUTRITION

(a) Describe the similarities and differences between marasmus and kwashiorkor.similarities .............................................................

2020 Spring

1

Theory

CH16 - REPRODUCTION

(a) Mitosis is a type of nuclear division.Fig. 5.1 is a series of photomicrographs showing a cell dividing by mitosis.(i) State the change that has oc...

2020 Spring

2

Theory

CH21 - HUMAN INFLUENCES ON ECOSYSTEMS

(a) Atlantic cod, Gadus morhua, is a type of fish that is an important resource for commercial fishing.Fig. 6.1 shows the estimated mass of Atlantic c...

2020 Spring

2

MCQ

CH1 - CHARACTERISTICS AND CLASSIFICATION OF LIVING ORGANISMS

The diagram shows what happened in an experiment with plant seedlings. Which characteristic of living things made the seedlings grow towards the lig...

2020 Summer

2

MCQ

CH1 - CHARACTERISTICS AND CLASSIFICATION OF LIVING ORGANISMS

A rat has the scientific name $Rattus$ $rattus$.What do the two parts of this name refer to?

2020 Summer

2

MCQ

CH2 - ORGANIZATION AND MAINTENANCE OF THE ORGANISM

The diagram shows two guard cells.Which label shows the cell wall?

2020 Summer

2

MCQ

CH2 - ORGANIZATION AND MAINTENANCE OF THE ORGANISM

The diagrams show different levels of organisation in a plant. Which sequence shows the levels of organisation in order from smallest to largest?

2020 Summer

1