a) The human eyes lack the ability to perceive electrons/ electron beam (s)
- Electrons can only form images on these materials fluorescent screen or photographic plates;
b) Specimens are harmful to the human eye
johnmulu answered the question on January 18, 2017 at 07:54
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Name two strengthening tissues in plants other than xylem
(Solved)
Other than xylem tissue, name two strengthening tissues in plants.
Date posted:
January 17, 2017
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Answers (1)
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Name the main mineral elements obtained from insects by insectivorous plants
(Solved)
Name the main mineral elements obtained from insects by insectivoros plants
Date posted:
January 16, 2017
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Answers (1)
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State two factors within the seed that cause seed dormancy
(Solved)
Which factors within the seed that cause seed dormancy?
Date posted:
January 16, 2017
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Answers (1)
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Name the ground material of each of the following organelles
(Solved)
Name the ground material of each of the following organelles:
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b) Nucleus
c) Mitochondrion
d) Plant cell vacuole
Date posted:
January 16, 2017
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Answers (1)
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Explain why only mutations in the genes of gametes can influence evolution
(Solved)
Explain why only mutations in the genes of gametes can influence evolution.
Date posted:
January 16, 2017
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Answers (1)
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What type of evolution produces analogous structures?
(Solved)
Name the type of evolution that produces analogous structures
Date posted:
January 16, 2017
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Answers (1)
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Name two important functions of fruits to the life cycle of plant
(Solved)
What are the important functions of fruits to the life cycle of plant?
Date posted:
January 16, 2017
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Answers (1)
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What is name given to addition of a dye to specimen during the preparation for viewing under the light microscope?
(Solved)
Addition of a dye to specimen during the preparation for viewing under the light microscope is called
Date posted:
January 16, 2017
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Give one living cell in the plant and in the animal body that, when mature, lacks a nucleus
(Solved)
Name one living cell in the plant and in the animal body that, when mature, lacks a nucleus.
Date posted:
January 16, 2017
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Answers (1)
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What is the role of air in a germinating seed?
(Solved)
What is the role of air in a germinating seed?
Date posted:
January 16, 2017
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Answers (1)
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What are the advantages of metamorphosis to the life of insects?
(Solved)
Give two advantages of metamorphosis to the life of insects.
Date posted:
January 16, 2017
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Answers (1)
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What is the difference between homologous and analogous structures?
(Solved)
Give the difference between homologous and analogous structures.
Date posted:
January 16, 2017
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Answers (1)
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Name two respiratory surfaces in a mature frog apart from the lungs
(Solved)
Name two respiratory surfaces in a mature frog apart from the lungs.
Date posted:
January 16, 2017
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Answers (1)
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What is the effect of denitrifying bacteria in the soil?
(Solved)
Give the effect of denitrifying bacteria in the soil.
Date posted:
January 16, 2017
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Answers (1)
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Where does nitrogen fixation take place in a plant?
(Solved)
Name the part of plant where nitrogen fixation takes place.
Date posted:
January 16, 2017
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Answers (1)
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State two water-borne human diseases that are characterized by severe diarrhea
(Solved)
State two water-borne human diseases that are characterized by severe diarrhea.
Date posted:
January 16, 2017
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Answers (1)
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Name the habitat of a plant that has the following characteristics
(Solved)
Name the habitat of a plant that:
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Date posted:
January 16, 2017
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Answers (1)
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Which factors which destroy the semi - permeability of the cell membrane?
(Solved)
State two factors which destroy the semi-permeability of the cell membrane.
Date posted:
January 16, 2017
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Answers (1)
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Name the organelle that performs each of the following functions in a cell
(Solved)
Name the organelle that performs each of the following functions in a cell
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ii) Stores enzymes
Date posted:
January 16, 2017
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Answers (1)
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Give one advantage of heterodonts over homodonts.
(Solved)
State one advantage of heterodonts over homodonts.
Date posted:
January 14, 2017
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Answers (1)