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Give the function of the following features found in the wall of trachea and bronchi in
a mammal.
(i) Ciliated cells
(ii) Mucus secreting cells
Date posted:
September 30, 2019
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A student estimating a cell size of an onion epidermal cells observed the following on the microscope field of view using a transparent ruler.
The student identified 20 cells across the field of view. Calculate the size of the cell inMicrometers (show your working)
Date posted:
September 30, 2019
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Explain why a thirsty person should not drink soda to quench the thirst.
Date posted:
September 30, 2019
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State the law represented in figure below.
Date posted:
September 30, 2019
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State the disease and treatment in condition where is increase in blood sugar and appearance of sugar in urine of man.
Date posted:
September 30, 2019
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Name the enzyme responsible for breaking down sodium hydrogen carbonate in mammalian blood to release carbon dioxide.
Date posted:
September 30, 2019
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Study the diagram below and answer the questions that follow:
(a) Identify the organelle.
(b)Name the structure labelled K
(c)State two functions of the organelle named in (a) above
Date posted:
September 30, 2019
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State the contribution physics has made to the entertainment industry.
Date posted:
September 30, 2019
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Explain why vegetables should not be overcooked.
Date posted:
September 30, 2019
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State two precautions which should be taken when storing a microscope after a laboratory exercise.
Date posted:
September 30, 2019
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The figure below shows a uniform bar of weight 5N and length 1.1m pivoted at a point and in equilibrium under the action of the forces shown.
Determine the value of weight W.
Date posted:
September 30, 2019
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State the use of each of the following apparatus:
I)Bait trap
ii) Specimen bottle
iii) Pitfall trap
Date posted:
September 30, 2019
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The binomial name of housefly is MUSCA DOMESTICA.
i) Statetwo mistakes in the way the scientific name is written.
ii) Re-write the name in correct manner following the rules of binomial nomenclature
Date posted:
September 30, 2019
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State advantages of fruit/seed dispersal.
Date posted:
September 30, 2019
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Subtract 010112 from 110012
Date posted:
September 30, 2019
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Explain the method of transfusion and prevention of:
(i) Typhoid and Amoebic dysentry.
(ii) Malaria
Date posted:
September 30, 2019
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Two forces are acting on a body as shown in the figure below. By use of a vector, draw the body and show the resultant force.
Date posted:
September 30, 2019
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Briefly explain the process of inhalation in man.
Date posted:
September 30, 2019
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A baby who is suckling has a lower chance of contracting infection than one who feeds from the bottle. Explain.
Date posted:
September 30, 2019
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Name four examples of document readers.
Date posted:
September 30, 2019
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What are the advantages and disadvantages of having blood group O?
Date posted:
September 30, 2019
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Calculate the respiration quotient (RQ) from the equation below:-
a)
b) Identify the substrate being respired in the above equation
Date posted:
September 30, 2019
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The figure below shows a graph showing the behaviour of a helical spring.
Determine the spring constant in SI units.
Date posted:
September 30, 2019
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State the main component that formed the basis for second generation computers.
Date posted:
September 30, 2019
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Using twos complements compute the following using 8 bits:
2010 - 2510
Date posted:
September 30, 2019
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The water level in a burette is 30.6cm³, 50 drops of water each of volume 0.2cm³ are added to the water in the burette. What is the final reading of the burette.
Date posted:
September 30, 2019
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The figure below represents a structure obtained from the ileum of a mammal.
a) Give the identity of the structure.
b) What is the importance of the structure named in (a) above?
c) Name the parts labeled A, B and D
Date posted:
September 30, 2019
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A transformer with 1200 turns in the primary circuit and 120 turns in the secondary circuit has its primary circuit connected to a 400V a.c. source. It is found that when a heater is connected to the secondary circuit, it produces heat at the rate of 600W. Assuming 100% efficiency, determine the:
i) voltage in the secondary circuit.
ii) current in the primary circuit.
iii) current in the secondary circuit.
Date posted:
September 30, 2019
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Compute the value of x in the following expressions:
(i) 24.3510 = X2
(ii) 6ABH = X10
Date posted:
September 30, 2019
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Name the carbohydrate stored in:
i) Cell wall
ii) Mammalian liver
Date posted:
September 30, 2019