The revolving nose piece holds the objective lens in place and allows change from one objective lens to another.
The condenser concentrates light on the object on the stage.
The eye piece has a lens that contributes to the magnification of the specimen.
Faimus answered the question on December 4, 2017 at 12:11
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Give two differences between common names and scientific names.
(Solved)
Give two differences between common names and scientific names
Date posted:
December 4, 2017
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Answers (1)
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What are the differences between plants and animals?
(Solved)
What are the differences between plants and animals?
Date posted:
December 3, 2017
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Answers (1)
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Give reasons why a motor vehicle is not a living thing.
(Solved)
Give reasons why a motor vehicle is not a living thing
Date posted:
December 3, 2017
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Answers (1)
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Name and explain 5 branches of biology
(Solved)
Name and explain 5 branches of biology
Date posted:
December 3, 2017
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Answers (1)
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The ileum has various adaptations for absorption of digested food substances. Explain.
(Solved)
Explain how the ileum is adapted to absorption.
Date posted:
December 3, 2017
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Answers (1)
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What are the adaptations of xerophytes?
(Solved)
What are the adaptations of xerophytes?
Date posted:
November 22, 2017
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Answers (1)
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The graph below shows daily variation of human body temperature over three days
(Solved)
The graph below shows daily variation of human body temperature over three days
(i)What is the maximum range of body temperature under normal conditions as shown in the graph?
(ii)At what time each day does body temperature drop to its lowest level?
(iii)Suggest a reason for the drop in temperature at the time referred to in (ii) above
(iv)Children typically have higher temperature than adults.Suggest a reason for this
(v)What is the advantage of the higher body temperature in children?
Date posted:
November 21, 2017
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Answers (1)
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Which waste product is almost absent in the renal vein but present in the renal artery?
(Solved)
Which waste product is almost absent in the renal vein but present in the renal artery?
Date posted:
November 20, 2017
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Answers (1)
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The diagram shows microscopic detail from a human lung
(Solved)
The diagram shows microscopic detail from a human lung
(i)Name the part labelled A,B and C
(ii)Give two features of the structures in the diagram that allow for efficient gas exchange
(iii)Which gas,dissolved in the blood,can trigger deeper or faster breathinggf
Date posted:
November 20, 2017
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Answers (1)
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The diagram below shows the internal structure of a leaf
(Solved)
The diagram below shows the internal structure of a leaf
(i)Name the one tissue type that is found at both W and X
(b)The cell at W contains many organelles that carry out photosynthesis.
Suggest why the cells at W contain more of these organelles than the cells at cells at X
(c)In layer X,gases can diffuse throughout the leaf.Name one such gas
(d)State one function of the opening at Z
Date posted:
November 20, 2017
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Answers (1)
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The diagram below shows a section through human skin
(Solved)
The diagram below shows a section through human skin
(i)Name the parts labelled A,B and C
(ii)The skin is one of the excretory organs in humans
name one substance excreted by the skin
(iii)List two other functions of the skin
Date posted:
November 20, 2017
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Answers (1)
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Amoeba is a tiny ,one-celled organism.This diagram below shows the structure of a fresh water Amoeba as seen through a light microscope
(Solved)
Amoeba is a tiny ,one-celled organism.This diagram below shows the structure of a fresh water Amoeba as seen through a light microscope
(a)Name parts labelled A,C and D on the diagram
(b)state:-One function of part A
-One function of part C
Date posted:
November 20, 2017
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Answers (1)
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State the theories explaining the origin of HIV/AIDS
(Solved)
State the theories explaining the origin of HIV/AIDS
Date posted:
November 18, 2017
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Answers (1)
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Give two reasons why lipids are not suitable respiratory substrates
(Solved)
Give two reasons why lipids are not suitable respiratory substrates
Date posted:
November 17, 2017
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Answers (1)
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A strip of a herbaceous Tradescantia was cut longitudinally as shown below and placed in solution X.After one hour,the strips appeared as shown below.
(Solved)
A strip of a herbaceous Tradescantia was cut longitudinally as shown below and placed in solution X.After one hour,the strips appeared as shown below.
(a)What was the nature of solution X?
(b)What physiological process was being investigated?
(b)Account for the results at the end of experiment after one hour
Date posted:
November 16, 2017
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Answers (1)
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The diagram below shows how gaseous exchange occurs across the gill in fish
(Solved)
The diagram below shows how gaseous exchange occurs across the gill in fish
(i)What is the term used to describe this type of flow displayed above?
(ii)What is the advantage of this flow system
(iii)Name an organ in human beings that displays this flow system
Date posted:
November 16, 2017
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Answers (1)
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State two adaptations of the nephron of a desert animal.
(Solved)
State two adaptations of the nephron of a desert animal.
Date posted:
November 16, 2017
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Answers (1)
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Explain why amoeba does not require transport system.
(Solved)
Explain why amoeba does not require transport system.
Date posted:
November 16, 2017
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Answers (1)
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Describe what happens during the dark stage of photosynthesis.
(Solved)
Describe what happens during the dark stage of photosynthesis.
Date posted:
November 15, 2017
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Answers (1)
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Why is it necessary to use a sharp razor blade while preparing sections to be viewed under a light microscope?
(Solved)
Why is it necessary to use a sharp razor blade while preparing sections to be viewed under a light microscope?
Date posted:
November 15, 2017
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Answers (1)