- Nervous system/sensory system
- Endocrine (hormonal system)
Wilfykil answered the question on October 1, 2019 at 08:36
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It is estimated that the total length of the capillaries in man is 60km. They are much branched, thin walled and narrow. Explain...
(Solved)
It is estimated that the total length of the capillaries in man is 60km. They are much branched, thin walled and narrow. Explain the significance of these features.
Date posted:
October 1, 2019
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Answers (1)
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What is coordination in animals
(Solved)
What is coordination in animals
Date posted:
October 1, 2019
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Answers (1)
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A person of blood group B marries a woman of blood group B. Work out the possible blood group of their children.
(Solved)
A person of blood group B marries a woman of blood group B. Work out the possible blood group of their children.
Date posted:
October 1, 2019
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Answers (1)
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Explain how fatty acids and glycerols are absorbed in the ileum.
(Solved)
Explain how fatty acids and glycerols are absorbed in the ileum.
Date posted:
October 1, 2019
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Answers (1)
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Explain briefly how excess protein are eliminated in the body.
(Solved)
Explain briefly how excess protein are eliminated in the body.
Date posted:
October 1, 2019
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Answers (1)
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Outline briefly the method of ventilation used by locust and cockroach.
(Solved)
Outline briefly the method of ventilation used by locust and cockroach.
Date posted:
October 1, 2019
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Answers (1)
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Explain four precautions that can be taken to prevent typhoid being transmitted
(Solved)
Explain four precautions that can be taken to prevent typhoid being transmitted
Date posted:
October 1, 2019
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Answers (1)
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Sickle – cell anaemia is a hereditary disease due to mutation of gene for normal haemoglobin to gene that causes sickle cell anaemia. What are...
(Solved)
Sickle – cell anaemia is a hereditary disease due to mutation of gene for normal haemoglobin to gene that causes sickle cell anaemia. What are the possible phenotype offspring of a man and a woman both heterozygous.
Date posted:
October 1, 2019
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Answers (1)
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Pollen from a red – flowered plant A was used to pollinate white flowered plant B, the seeds from which produced 157 red-flowered plants. When...
(Solved)
Pollen from a red – flowered plant A was used to pollinate white flowered plant B, the seeds from which produced 157 red-flowered plants. When a red flowered plant C was pollinated by a white-flowered plant D, the resultant seeds gave rise to 84 red-flowered plants: and 91 white flowered plants. Assuming that plants A, B, C, and D were all of the same species and that flower colour in that species is controlled by a single pair of genes.
Using R for dominant gene and r for recessive gene, write down the genotypes of the following.
i)Plant A
ii)Plant B
iii)Progeny of A x B cross
iv)Plant C
v)Plant D
vi)Red flowered progeny of C x D cross.
Date posted:
October 1, 2019
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Answers (1)
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State two symptoms of gout disease in man.
(Solved)
State two symptoms of gout disease in man.
Date posted:
October 1, 2019
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Answers (1)
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Distinguish between gaseous exchange and respiration
(Solved)
Distinguish between gaseous exchange and respiration
Date posted:
October 1, 2019
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Answers (1)
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Nocturnal animals such as the owl are capable of seeing fairly well at night. What two adaptations have made this possible.
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Nocturnal animals such as the owl are capable of seeing fairly well at night. What two adaptations have made this possible.
Date posted:
October 1, 2019
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Answers (1)
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A scientist has discovered a rare disease that attacks the respiratory system in insects. Name two parts of an insect, which are most likely to...
(Solved)
A scientist has discovered a rare disease that attacks the respiratory system in insects. Name two parts of an insect, which are most likely to be damaged by the disease.
Date posted:
October 1, 2019
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Answers (1)
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Under what condition would a plant lose more water than its absorbing from the soil.
(Solved)
Under what condition would a plant lose more water than its absorbing from the soil.
Date posted:
October 1, 2019
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Answers (1)
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Explain how Antiduretic hormone regulates osmotic potential in the body
(Solved)
Explain how Antiduretic hormone regulates osmotic potential in the body
Date posted:
October 1, 2019
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Answers (1)
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Distinguish between Secretion and excretion.
(Solved)
Distinguish between Secretion and excretion.
Date posted:
October 1, 2019
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Answers (1)
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Explain the disadvantages of using acarides in tick control
(Solved)
Explain the disadvantages of using acarides in tick control
Date posted:
October 1, 2019
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Answers (1)
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Name two methods that would be used to measure growth in plants.
(Solved)
Name two methods that would be used to measure growth in plants.
Date posted:
October 1, 2019
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Answers (1)
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State two precautions you would observe when preparing a bacteria culture in the laboratory.
(Solved)
State two precautions you would observe when preparing a bacteria culture in the laboratory.
Date posted:
October 1, 2019
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Answers (1)
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Using a punnet square, explain why the view that “some women have a tendency to giving birth to girl or boy babies only” has...
(Solved)
Using a punnet square, explain why the view that “some women have a tendency to giving birth to girl or boy babies only” has no scientific foundation.
Date posted:
October 1, 2019
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Answers (1)