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The released ovum is viable for 12- 24 hours while the sperm might live in the female reproductive organs for 2-3 days.
Kavungya answered the question on October 31, 2019 at 05:47
- Give two reasons for screening blood before transfusion.(Solved)
Give two reasons for screening blood before transfusion.
Date posted: October 31, 2019. Answers (1)
- A person who is blood group AB has an advantage over a person who is blood group O. Explain.(Solved)
A person who is blood group AB has an advantage over a person who is blood group O. Explain.
Date posted: October 31, 2019. Answers (1)
- The diagram below represents a longitudinal section of a bean study it and answer the questions that follow:
a) Identify the parts labeled A to D.
b)...(Solved)
The diagram below represents a longitudinal section of a bean study it and answer the questions that follow:
a) Identify the parts labeled A to D.
b) Give the role of the plant labeled D.
c) What type of germination would the seed shown above undergo?
Date posted: October 31, 2019. Answers (1)
- The letters ‘N’ and n represents the dominant and recessive genes for hemophilia respectively.
Write down the genotype of the following
a)Homozygous dominant
b)Homozygous recessive
c)Heterozygote(Solved)
The letters ‘N’ and n represents the dominant and recessive genes for hemophilia respectively.
Write down the genotype of the following
a)Homozygous dominant
b)Homozygous recessive
c)Heterozygote
Date posted: October 30, 2019. Answers (1)
- During research on different types of plants students found a plant that looked like the one shown below
a)Identify the plant.
b) Name the parts labeled A,...(Solved)
During research on different types of plants students found a plant that looked like the one shown below
a)Identify the plant.
b) Name the parts labeled A, B, C and D.
c)State the division to which the plant belongs.
Date posted: October 30, 2019. Answers (1)
- The diagram below represents a synapse
a) Indicate the direction of the impulse on the diagram
b) State two significances of a synapse in the body (Solved)
The diagram below represents a synapse
a) Indicate the direction of the impulse on the diagram
b) State two significances of a synapse in the body
Date posted: October 30, 2019. Answers (1)
- The diagram below represents a certain organism collected by a student on his way to school
a) State the class to which the organism belongs
b) Give...(Solved)
The diagram below represents a certain organism collected by a student on his way to school
a) State the class to which the organism belongs
b) Give two reasons for your answer (a) above
Date posted: October 30, 2019. Answers (1)
- The diagram below represents a section or portion of a certain nucleic acid.(Solved)
The diagram below represents a section or portion of a certain nucleic acid.
With a reason, identify the types of nucleic acid whose portion is shown above
Identity
Reason
Date posted: October 9, 2019. Answers (1)
- The table below shows the percentage composition by volume of inhaled and exhaled air.(Solved)
The table below shows the percentage composition by volume of inhaled and exhaled air.
(a) By what percentage is carbon (iv) oxide concentration in inhaled air higher than exhaled air.
(b) Explain the differences in the composition of the gases between inhaled and exhaled air.
Date posted: October 9, 2019. Answers (1)
- In a blood test, a few drops of anti- serum were added to two samples of blood. It was observed that agglutination occurred. What were...(Solved)
In a blood test, a few drops of anti- serum were added to two samples of blood. It was observed that agglutination occurred. What were the possible blood groups of the two blood samples?
Date posted: October 9, 2019. Answers (1)
- The following is a diagrammatic representation of protein synthesis. Study and answer the questions that follow.(Solved)
The following is a diagrammatic representation of protein synthesis. Study and answer the questions that follow.
(a) Name process R
(b) Where in the cell does R take place?
(c) Name
(i) Product Q
(ii) Part X
Date posted: October 9, 2019. Answers (1)
- Name the parts of the body of a mammal where each of the following types of joints are found.(Solved)
Name the parts of the body of a mammal where each of the following types of joints are found.
(i) Fixed joints
(ii) Gliding joint
(ii) Huge joint
Date posted: October 9, 2019. Answers (1)
- a0When observing a specimen through a light microscope, a student noted that the field of view was dark. Name 2 parts of the microscope that...(Solved)
a)When observing a specimen through a light microscope, a student noted that the field of view was dark. Name 2 parts of the microscope that the student should adjust to make the field of view clear.
b) A specimen was magnified 1000 times by a light microscope whose eye piece lens magnification is x10. Calculate magnification of objective lens.
Date posted: October 9, 2019. Answers (1)
- The following graph represents a growth pattern observed in a group of animal.(Solved)
The following graph represents a growth pattern observed in a group of animal.
a) Name the type of growth shown above.
b) Name the phylum of animals whose members display the growth pattern named in (a) above.
c) Identify the process which leads to increase in body size at the part marked S.
Date posted: October 9, 2019. Answers (1)
- Explain how each of the following serves as evidence of organic evolution
(i) Fossil records
(ii) Comparative antinomy
(iii) Geographical distribution(Solved)
Explain how each of the following serves as evidence of organic evolution
(i) Fossil records
(ii) Comparative antinomy
(iii) Geographical distribution
Date posted: October 9, 2019. Answers (1)
- State the possible application of the following plants hormones in agriculture
(i) Auxins
(ii) Gibberellins(Solved)
State the possible application of the following plants hormones in agriculture
(i) Auxins
(ii) Gibberellins
Date posted: October 9, 2019. Answers (1)
- The table below shows how the width of the stomata and the wind speed can affect the rate of transpiration from a leaf of a...(Solved)
The table below shows how the width of the stomata and the wind speed can affect the rate of transpiration from a leaf of a plant. The width are measured in micrometers (nm)
a)plot a graph of rate of transpiration against width of the stomata.
(b) Use your graph to predict the rate of transpiration when the stomata have a width of 8nm.
(c) Describe the relationship between the width of stomata and the rate of transpiration in still air.
(d) Explain why the rate of transpiration in wind differs from rate in still air.
(e) Explain why transpiration is important in plants.
Date posted: October 9, 2019. Answers (1)
- The diagram below represents a transverse section through mammalian skin.(Solved)
The diagram below represents a transverse section through mammalian skin.
(a) Name the structures A and B .
A
B
(b) (i) Explain how the hair in human beings helps in keeping the body warm .
(ii) Explain other methods by which the skin helps to keep the body warm.
Date posted: October 9, 2019. Answers (1)
- The following is a diagrammatic representation of a dissection of a rabbit showing the urinogenital system.(Solved)
The following is a diagrammatic representation of a dissection of a rabbit showing the urinogenital system.
a)name the structures labeled P, Q, S and T. For each of the structures, state one function.
b)
i) Identify the sex of the rabbit that was dissected
ii) Give two reasons for your answer in b(i) above
c) Name the instrument labeled x in the diagram above
Date posted: October 8, 2019. Answers (1)
- Name one human disease caused by each of the following parasites.
(a) Plasmodium falciparum
(b) Entamoeba histolytica(Solved)
Name one human disease caused by each of the following parasites.
(a) Plasmodium falciparum
(b) Entamoeba histolytica
Date posted: October 8, 2019. Answers (1)