K.C.S.E Biology Q & A - MODEL 2007PP1QN10
The diagram below represents a plant tissue
(a) Name the tissue
(b) Name the cells labeled K and L. K………………………………………………………………………. L………………………………………………………………………. (c) What is the function of the companion cell?
ANSWERS
(a) Phloem tissues
(b) K- companion cell L – sieve tube (c) Supply nutrients and energy to the sieve tubes
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K.C.S.E Biology Q & A - MODEL 2007PP1QN04
State three functions of Golgi apparatus
ANSWERS
K.C.S.E Biology Q & A - MODEL 2006PP1QN01
The diagram below represents a cell organelle.
(i) Name the part labeled Y.
(ii) State the functions of the part labeled X.
answers
(i) Stroma
(ii) Bearing photosynthesis pigments/ chlorophyll/ site for light dependent reaction/ site for photolysis
K.C.S.E Biology Q & A - MODEL 2006PP1QN01
State the functions of cristae in mitochondria.
answers
K.C.S.E Biology Q & A - MODEL 2005PP1QN02
The diagram below represents a cell.
(a) Name the parts labeled X and Y
X …………………………………….. Y …………………………………….. (b) Suggest why the structures labelled X would be more on one side than the other.
ANSWERS
a) X – Chloroplast
Y – Cell vacuole / sap vacuoles b) To receive maximum amount of light. K.C.S.E Biology Q & A - MODEL 2004PP1QN07
State the function of the organelles:
a) Lysosomes b) Golgi apparatus
answers
a) Stores hydrolytic enzymes for destruction of worn out organelles / cells/ tissues / digestion of bacteria. / pathogens;
Acc. Digestion of food / accept autolysis. b) processing / packaging synthesized and transporting of packaged cell materials;. Production of lysosomes/ secretions of packaged material;
K.C.S.E Biology Q & A - MODEL 2001PP1QN07
Name the organelle in which protein synthesis takes place
ANSWERS
K.C.S.E Biology Q & A - MODEL 2000PP1QN07
Why is oxygen important in the process of active transport in cells?
answers
K.C.S.E Biology Q & A - MODEL 1999PP1QN14
The photograph below represents a blood smear obtained from a person suffering from a certain disease.
a) Name the structure labeled X.
b) i) Name the structure labeled L ii) State the function of the source labeled M c) What disease was the person suffering from? d) List three ways by which micro-organisms enter the human body.
answers
a) Trypanosome
b) i) Locomotion ii) c) Sleeping sickness/trypanosomiasis d) -Orally ingested including boring through bites Sexually; cuts and wounds (contaminated) needles syringes/surgical instruments; contaminated blood transfusion. K.C.S.E Biology Q & A - MODEL 1998PP1QN16
A student placed a drop of pond water in a cavity slide and observed it under the microscope. The student observed many fast moving organisms, one of which is represented in the diagram below.
(a) (i) Name the phylum to which the organism belongs
(ii) Give a reason for your answer in (a) (i) above (b) Name the structures labeled N, P and Q. (c) State two observable features that enable the organism to move fast.
answers
(a) (i) Protozoa
(ii) Unicellular/ single celled (b) N- Contractile vacuole P – Cilia, Acc cilium Q – Gullet/cytopharynx (c) Cilia Streamlined body. K.C.S.E Biology Q & A - MODEL 1998PP1QN03
Which organelle would be abundant in:
ANSWERS
Skeletal muscle cell
K.C.S.E Biology Q & A - MODEL 1997PP1QN01.
State the functions of the following cell organelles
(a) Golgi apparatus
(b) Ribosomes
ANSWERS
(a) Golgi apparatus
K.C.S.E Biology Q & A - MODEL 1996PP1QN 17c
How can low blood volume be brought back to normal
answers
K.C.S.E Biology Q & A - MODEL 1996PP1QN 17b
Name the process by which the human body naturally stops Bleeding?
answers
K.C.S.E Biology Q & A - MODEL 1996PP1QN 17a
How may excessive bleeding results in death?
answers
Name the organelle that performs each of the following functions in a cell.
knec marking scheme
THE CELL1. 1995 Q2 P1 Name the organelle that performs each of the following functions in a cell (2 marks) a) Proteins synthesis____ b) Transport of cell secretions___ 2. 1996 Q8 P1 State two functions of cell sap (2 marks) 3. 1997 Q1 P1 State the functions of the following cell organelles a) Golgi apparatus b) Ribosomes 4. 1998 Q3 P1 Which organelle would be abundant in: a) Skeletal muscle cell b) Palisade cell 5. 2001 Q7 P1 Name the organelle in which protein synthesis takes place 6. 2004 Q7 P1 State the function of the organelles: a) Lysosomes (1 marks) b) Golgi apparatus (2 marks) 7. 2005 Q2 P1 The diagram below represents a cell. a) Name the parts labelled X and Y (2 marks) X____ Y____ b) Suggest why the structures labelled X would be more on one side than the other. (1 mark) 8. 2006 Q1 P1 a) State the functions of cristae in mitochondria. b) The diagram below represents a cell organelle.
i) Name the part labelled Y. (1 mark) ii) State the functions of the part labelled X. (1 mark) 9. 2007 Q2 P1 a) What is the formula for calculating linear magnification of a specimen when using a hand lens? b) Give a reason why staining is necessary when preparing specimens for observation under the microscope (1 mark) 10.2007 Q4 P1 State three functions of Golgi apparatus (3 marks) 11.2008 Q12 P1 State two functions of the endoplasmic reticulum (2 marks) 12.2009 Q3 P1 State the functions of the following parts of a light microscope (2 marks) a) Objective lens _______ b) Diaphragm _______ 13.2009 Q7 P1 State the function of the following cell organelles a) Ribosome (1 mark) b) Lysosomes (1 mark) 14.2009 Q15 P1 Name the type of movement that occurs within a plant cell (1 mark) 15.2009 Q26 P1 How are the mitochondria adapted to their functions? (2 marks) 16.2010 Q3 P1 State the function of: a) Ribosomes (1 mark) b) Lysosomes (1 mark) 17.2010 Q9 P1 State two ways in which chloroplasts are adapted to their functions. (2 marks) 18.2011 Q11 P1 State the functions of the following parts of a light microscope. i) Fine adjustment knob. ii) Stage (2 marks) 19.2011 Q15 P1 Give reasons for carrying out the following procedures when preparing temporary wet mounts of plant tissues. a) Making thin plant sections (1 mark) b) Adding water on the plant section. (1 mark) c) Placing a cover slip over the plant section. (1 mark) 20.2012 Q3 P1 The figure below is a fine structure of a generalised animal cell as seen under an electron microscope.
a) Name the parts labelled A and B (2 marks) A______________ B______________ b) How is the structure labelled B adapted to its functions (2 marks) 21.2012 Q12 P1 a) Name the part of a light microscope used to bring an image of a specimen into sharp focus. (1 mark) b) Why is it recommended to keep the stage of the microscope dry? (1mark) 22.2012 Q27, 30 P1 27.What is the function of contractile vacuoles in amoeba? (1 mark) 30.Name the organelle that is involved in each of the following: (2 marks) a) Manufacture of lipids b) Formation of Lysosomes |
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