Exam Questions
Create an Exam based to questions from past papers
A certain element Y has atomic number 15 and mass number of 31.
(a) Calculate the number of neutrons in the element. [1 Mark]
(b)
A certain element Y has atomic number 15 and mass number of 31.
(c)
A certain element Y has atomic number 15 and mass number of 31.
The diagram below shows gaseous exchange in tissues.
(a) What is tissue fluid? [1 Mark]
(b)
Name the gas that diffuses.
(c)
(a) Define the term ‘parthenocarpy’ [1 Mark]
(b)
Name the organelle that performs each of the following functions in a cell
(a) Protein synthesis [1 Mark]
(b)
The diagram below represents a certain organism
(a) Identify the kingdom to which the organism belongs [1 Mark]
(b)
(c)
(a) Name the fluid that is produced by sebaceous glands. [1 Mark]
(b)
(a) State two characteristics that are used to divide the phylum arthropoda into classes. [2 Marks]
(b)
An experiment was set up as shown in the diagram below.
(a) Which process is being investigated by the above experiment? [1 Mark]
(c)
What causes the following diseases?
(a) Diabetes mellitus. [1 Mark]
(b)
The following chart shows a feeding relationship in ecosystem.
(a) Construct two food chains ending with a tertiary consumer in each case. [2 Marks]
(b)
(c)
A man of blood group A and a woman of blood group B get married.
(a) Using a punnet square show the possible blood groups of their offspring’s if both of them are heterozygous for their blood groups. [4 Marks]
(b)
The diagram below shows a mature embryo sac of a flowering plant.
(a) What is the function of the structure labeled B. [1 Mark]
(b)
(a) Name the tissues that transport water in plants. [1 Mark]
(b)
The diagram below shows regions of growth in a root. Study it and answer the questions that follow.
(a) Name the zones labeled A, B, C. [3 Marks]
(b)
The enzymes pepsin and trypsin are secreted in their inactive forms.
(a) Give the names of these inactive forms. [2 Marks]
(b)
Define the following terms:
(a) Evolution. [1 Mark]
(b)
Study the diagram below of a neurone in human being.
(a) Identify the neurone. [1 Mark]
(b)
(c)
Study the diagram of the mammalian tooth below and answer the questions that follow.
(a) Identify the tooth. [1 Mark]
(b)
(c)
The diagram below represents one of the specialized cells found in the human body.
(a) Identify the cell. [1 Mark]
(b)
(c)
The diagram below represents the anterior view of a certain vertebra shown below.
(a) With a reason, identify the type of vertebra shown above. [2 Marks]
(b)
The table below shows mineral nutrition in plants.
(a) Complete the table above [4 Marks]
Examine the diagram below and use it to answer the questions that follow.
(a) Name the parts labeled.
(a)
(i) B [1 Mark](a)
(i) C [1 Mark](iii) [1 Mark]
(b)
(c)
(d)
The figure below is a pedigree showing the inheritance of colour-blindness, a disease transmitted through a recessive gene located on the X-chromosome.
(a) Using the symbol N for normal gene and n for colourblind gene, write down the genotypes of parents 1 and 2. [2 Marks]
(b)
The diagrams below illustrate some chromosome mutations.
(a) Identify the mutations.
(a)
(i) A [1 Mark](ii) B [1 Mark]
(iii) C [1 Mark]
The diagram below shows structures of the bat wing and human arm.
(a) These structures are thought to have same ancestral origin. State one structural similarity and one adaptational difference between the two.
(a)
(i) Structural similarity. [1 Mark](ii) Adaptational difference. [2 Marks]
(b)
(c)
(d)
The diagram below represents some hormones, their sources and functions in a mammal.
(a) Identify the gland described as master gland. [1 Mark]
(ii) III [1 Mark]
(iii) V [1 Mark]
(iii) VI [1 Mark]
(c)
(d)
Ascaris lumbricoides is an endoparasite.
(a) Name the genus to which it belongs. [1 Mark]
(b)
(c)
(d)
The table below shows how the quantities of sweat and urine vary with external temperature.
(a) On the same graph, plot the quantities of urine and sweat produced against the external temperature. [7 Marks]
(b)
(c)
(d)
(e)
In an experiment Hydrogen Sulphide was passed through 1m CuSO4(aq) in a boiling tube as shown in the diagram.
(a) State the observation made in the boiling tube. [1 Mark]
(b)
(c)
(a) What is the name of delta H1? [1 Mark]
State the functions of each of the following organelles.
(a) Ribosomes [1 Mark]
(b)
The diagram below represents the pathway of water from soil into the plant.
(a) Golgi apparatus
(a)
(i) T [1 Mark](ii) S [1 Mark]
(b)
A student added equal amounts of blood to equal volumes of salt of different concentrations. She observed and counted the red blood cells at the beginning of the experiment and at end of the experiment. The results were as shown:-
(a) Account for the results in:
(a)
(i) Set up A [2 Marks](ii) Set up B [2 Marks]
Below is a dental formula of certain organisms.
(a) Calculate the total number of teeth in the mouth of the organisms. [2 Marks]
(b)
(c)
(a) Give a reason why glucose does not normally appear in urine even though it is filtered in mammalian Bowman’s capsule. [2 Marks]
(b)
The diagram below shows a mature embryo sac of a flowering plant.
(a) Name the Parts:
(a)
(i) A [1 Mark](ii) D [1 Mark]
(b)
The diagram below represents part of the human digestive system.
(a) Name the organs labeled
(a)
(i) L [1 Mark](ii) M [1 Mark]
What is meant by the following terms?
(a) Ecology [1 Mark]
(b)
Explain how each of the following serves as evidence for evolution.
(a) Fossil records. [1 Mark]
(b)
(a) State two characteristics of the Kingdom Monera that are not found in other Kingdoms. [2 Marks]
(b)
(a) State two functions of the blood other than transport. [2 Marks]
(b)
(a) Define the term natural selection as used in evolution. [1 Mark]
(b)
(a) Name the carbohydrate that is stored in Mammalian muscles. [1 Mark]
(b)
Describe how the following parts of the mammalian ear are adapted to their functions
(a) Pinna [1 Mark]
(b)
(a) State two ways in which human body is naturally protected against harmful bacteria. [2 Marks]
(b)
Form One student set up an experiment shown below to investigate a certain physiological process. The set up was left for 30 minutes.
(a) Name the process under study. [1 Mark]
(b)
(c)
(a) Give another name of the oviduct. [1 Mark]
(b)
Below is an example of a food chain.
(a) Identify the trophic level occupied by:
(a)
(i) Nappier grass [1 Mark](ii) Hawk [1 Mark]
(b)
(a) Define the term mutation. [1 Mark]
(b)
A process that occurs in plants is represented by the equation.
(a) Name the above process. [1 Mark]
State two beneficial effects of transpiration to a plant.
(a) [2 Marks]