When blood vessel is injured, exposed platelets rupture to release thromboplastin (enzymes); which converts prothrombin to thrombin; in presence of Ca2+ thrombin activates conversion of fibrinogen into fibrin; which forms mesh work of fibre in the cut surface;
Kavungya answered the question on June 17, 2019 at 13:55
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Name the components of blood that do not enter the renal tubule in mammals
(Solved)
Name the components of blood that do not enter the renal tubule in mammals
Date posted:
June 17, 2019
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Answers (1)
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Give a reason why the left ventricle muscles are thicker than the right ventricles muscles
(Solved)
Give a reason why the left ventricle muscles are thicker than the right ventricles muscles
Date posted:
June 17, 2019
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Answers (1)
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Identify the part of the heart that initiates the heart beat
(Solved)
Identify the part of the heart that initiates the heart beat
Date posted:
June 17, 2019
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Answers (1)
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A transfusion of RH+ blood was given to a patient with Rh- blood. After oneweek a similar transfusion was given to the same patient. What...
(Solved)
A transfusion of RH+ blood was given to a patient with Rh- blood. After one
week a similar transfusion was given to the same patient. What was likely to be the effect of
the second transfusion?
Date posted:
June 17, 2019
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Answers (1)
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A woman gave birth to a child of blood group B+ (B positive). Name the twoantigens that determined her child’s blood group.
(Solved)
A woman gave birth to a child of blood group B+ (B positive). Name the two antigens that determined her child’s blood group.
Date posted:
June 17, 2019
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Answers (1)
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Uptake of water by plants is not affected by metabolic poisons. Explain.
(Solved)
Uptake of water by plants is not affected by metabolic poisons. Explain.
Date posted:
June 17, 2019
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Answers (1)
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Name a disease of the blood characterized by excessive production of white blood cells
(Solved)
Name a disease of the blood characterized by excessive production of white blood cells
Date posted:
June 17, 2019
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Answers (1)
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Why do plants not take in oxygen during the day although they need it for respiration?
(Solved)
Why do plants not take in oxygen during the day although they need it for respiration?
Date posted:
June 17, 2019
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Answers (1)
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Name the blood vessel that nourishes the heart
(Solved)
Name the blood vessel that nourishes the heart
Date posted:
June 17, 2019
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Answers (1)
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Explain why deficiency of vitamin K leads to excessive bleeding even from small cuts
(Solved)
Explain why deficiency of vitamin K leads to excessive bleeding even from small cuts
Date posted:
June 17, 2019
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Answers (1)
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Distinguish between tissue fluid and lymph
(Solved)
Distinguish between tissue fluid and lymph
Date posted:
June 17, 2019
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Answers (1)
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State the factor that maintain transpiration stream
(Solved)
State the factor that maintain transpiration stream
Date posted:
June 17, 2019
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Answers (1)
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How are sieve tube elements adapted to their function
(Solved)
How are sieve tube elements adapted to their function
Date posted:
June 17, 2019
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Answers (1)
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Explain why a fresh wound on the skin bleeds more on a hot sunny day than on a cold chilly day
(Solved)
Explain why a fresh wound on the skin bleeds more on a hot sunny day than on a cold chilly day.
Date posted:
June 17, 2019
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Answers (1)
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Why is an effective respiratory system often associated with a circulatory system.
(Solved)
Why is an effective respiratory system often associated with a circulatory system.
Date posted:
June 17, 2019
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Answers (1)
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Differentiate between respiration and respiratory surface.
(Solved)
Differentiate between respiration and respiratory surface.
Date posted:
June 17, 2019
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Answers (1)
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The equation below summarizes a metabolic process in plants.
Glucose----> Ethanol + carbon (IV) oxide+ Energy
State two industrial applications of the above equation.
(Solved)
The equation below summarizes a metabolic process in plants.
Glucose----> Ethanol + carbon (IV) oxide+ Energy
State two industrial applications of the above equation.
Date posted:
June 17, 2019
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Answers (1)
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Give two reasons why fats are not the main respiratory substrates in the
body of a mammal and yet they give a lot of energy when...
(Solved)
Give two reasons why fats are not the main respiratory substrates in the
body of a mammal and yet they give a lot of energy when oxidized.
Date posted:
June 17, 2019
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Answers (1)
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Explain why a rat, though small eats more frequently than an elephant
(Solved)
Explain why a rat, though small eats more frequently than an elephant
Date posted:
June 17, 2019
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Answers (1)
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Whooping cough is a disease of the respiratory system. Name the causative agents and give two symptoms
(Solved)
Whooping cough is a disease of the respiratory system. Name the causative agents and give two symptoms
Date posted:
June 17, 2019
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Answers (1)