a) Magnification – Ability of a microscope to enlarge tiny objects
Resolution – Ability of a microscope to separate between two tiny structures under magnification to appear distinct
b) Mounting – The placing of prepared slide on stage of a microscope;
Staining – Use of chemical stain on specimen for clear observation
marto answered the question on October 3, 2019 at 09:55
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The figure below represents a certain cell organelle.
(Solved)
The figure below represents a certain cell organelle.
(a)
(i) Identify the cell organelle
(ii) What is the function of the part labelled A
(b) Name the organelles that perform each of the following functions;
(i) Osmoregulation in amoeba
(ii) Carries out digestion and destruction of worn out cell organelles
Date posted:
October 3, 2019
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Answers (1)
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(a) In a laboratory exercise a student observing a drop of pond water under a microscope saw and drew a spirogyra. If the magnification of...
(Solved)
(a) In a laboratory exercise a student observing a drop of pond water under a microscope saw and drew a spirogyra. If the magnification of the eye-piece was x5 and that of the objective lens was x100, what was the magnification of the spirogyra?
(b) If the spirogyra has a length of 5cm at the above magnification, calculate the actual length
in micrometers
Date posted:
October 3, 2019
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Answers (1)
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What is the of nucleus of a cell made up of?
(Solved)
What is the of nucleus of a cell made up of?
Date posted:
October 3, 2019
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Answers (1)
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In a class experiment to establish the size of an onion cell, a leaner observed the following on the microscope field of view
(Solved)
In a class experiment to establish the size of an onion cell, a leaner observed the following on the microscope field of view
If the student counted 20 cells across the diameter of this field of view, calculate the size of one
cell in micrometers
Date posted:
October 3, 2019
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Answers (1)
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Explain why the following processes are important during the preparation of temporary.
slides :-
(a) Staining
(b) Use of a sharp cutting blade
(Solved)
Explain why the following processes are important during the preparation of temporary.
slides :-
(a) Staining
(b) Use of a sharp cutting blade
Date posted:
October 3, 2019
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Answers (1)
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Name the organelles that perform each of the following functions:
a) Digestion and destruction of worn out organelles.
b) Osmoregulation
(Solved)
Name the organelles that perform each of the following functions:
a) Digestion and destruction of worn out organelles.
b) Osmoregulation
Date posted:
October 3, 2019
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Answers (1)
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List three features that distinguish arthropods from other organisms.
(Solved)
List three features that distinguish arthropods from other organisms.
Date posted:
October 3, 2019
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Answers (1)
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The scientific name of a rat is Rattus norvegicus
(i) Write the name correctly
(ii) Identify the genus and species names
(Solved)
The scientific name of a rat is Rattus norvegicus
(i) Write the name correctly
(ii) Identify the genus and species names
Date posted:
October 3, 2019
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Answers (1)
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The diagram below represents a bread mould.
(Solved)
(a) (i) Name the Kingdom to which bread mould belongs.
(ii) Give two distinguishing characteristics of the Kingdom named in (a)(i) above.
(b) State the function of the part labelled R
Date posted:
October 3, 2019
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Answers (1)
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During a class practical form four students came across a plant whose flower floral parts were in multiples of fours and fives. To which sub-division...
(Solved)
During a class practical form four students came across a plant whose flower floral parts were in multiples of fours and fives. To which sub-division and class does the plant belong?
Date posted:
October 3, 2019
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Answers (1)
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Name the branch of Biology that deals with the study of animals.
(Solved)
Name the branch of Biology that deals with the study of animals.
Date posted:
October 3, 2019
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Answers (1)
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The diagram below represents a bread mould:-
(Solved)
The diagram below represents a bread mould:-
(a) Identify the kingdom to which the organism belongs
Date posted:
October 3, 2019
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Answers (1)
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(a) In which kingdom do bacteria belong?
(b) Give any two benefits of bacteria to man.
(Solved)
(a) In which kingdom do bacteria belong?
(b) Give any two benefits of bacteria to man.
Date posted:
October 3, 2019
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Answers (1)
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Give two characteristics that distinguish scientific names of organisms from the ordinary names.
(Solved)
Give two characteristics that distinguish scientific names of organisms from the ordinary names.
Date posted:
October 3, 2019
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Answers (1)
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List any three distinguishing features of class mammalia.
(Solved)
List any three distinguishing features of class mammalia.
Date posted:
October 3, 2019
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Answers (1)
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What is deamination?
(Solved)
What is deamination?
Date posted:
October 3, 2019
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Answers (1)
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Explain how high osmotic pressure is reduced back to normal in the human body.
(Solved)
Explain how high osmotic pressure is reduced back to normal in the human body.
Date posted:
October 3, 2019
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Answers (1)
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State three differences between class insect and Arachnida.
(Solved)
State three differences between class insect and Arachnida.
Date posted:
October 3, 2019
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Answers (1)
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Explain the effect of discharging hot water in an aquatic ecosystem.
(Solved)
Explain the effect of discharging hot water in an aquatic ecosystem.
Date posted:
October 3, 2019
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Answers (1)
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Name two processes that occur in the nephrone of the mammalian kidney.
(Solved)
Name two processes that occur in the nephrone of the mammalian kidney.
Date posted:
October 3, 2019
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Answers (1)