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

Theory

CH14 - CO-ORDINATION AND RESPONSE

(a) Fig. 1.1 is a diagram showing the position of some organs in the human body. Some of the organs shown in Fig. 1.1 are endocrine glands. Table 1.1...

2021 Spring

2

Theory

CH1 - CHARACTERISTICS AND CLASSIFICATION OF LIVING ORGANISMS

(a) Fig. 2.1 is a diagram of a prokaryotic cell. Fig. 2.1 (i) State one visible feature in Fig. 2.1 that identifies this cell as a prokaryotic cel...

2021 Spring

1

Theory

CH9 - TRANSPORT IN ANIMALS

(a) The activity of the heart can be monitored using different methods.Fig. 3.1 shows two ECG traces. One trace was recorded when the person was at re...

2021 Spring

3

Theory

CH2 - ORGANIZATION AND MAINTENANCE OF THE ORGANISM

(a) A leaf can be described as an organ.Define the term organ............................................................................................

2021 Spring

2

Theory

CH10 - DISEASES AND IMMUNITY

(a) Measles is a transmissible disease.The percentage of the population that were vaccinated against measles in a country was determined.The number of...

2021 Spring

1

Theory

Food Webs

(a) Fig. 6.1 shows a food web. (i) State the number of trophic levels in the food web in Fig. 6.1. [1] (ii) State the name of one organism that fe...

2021 Spring

1

MCQ

CH1 - CHARACTERISTICS AND CLASSIFICATION OF LIVING ORGANISMS

What is a characteristic of all living organisms?

2021 Summer

2

MCQ

CH1 - CHARACTERISTICS AND CLASSIFICATION OF LIVING ORGANISMS

The table shows a section of DNA taken from four different organisms.[Table_1]Which two organisms are the most distantly related to each other?

2021 Summer

1

MCQ

Animal Kingdom - Arthropods and Vertebrates

Scientists discover a new species of animal. It has a segmented body with two pairs of legs on each segment. To which group of animals does this new s...

2021 Summer

2

MCQ

CH2 - ORGANIZATION AND MAINTENANCE OF THE ORGANISM

The diagram shows a single-celled organism called *Euglena*. Which labelled structures would also be found in an animal cell?

2021 Summer

1