-Moist to dissolve respiratory gases
-Vascularized for uptake of respiratory gases
-Thin epithelium of the alveoli to reduced distance for diffusion
-Numerous alveoli to increase surface area for gaseous exchange
Githiari answered the question on September 13, 2017 at 20:06
- (a)What is organic evolution (b)Briefly explain how the peppered moth (Biston betularia) shows natural selection (c)Distinguish between convergent and divergent evolution ...(Solved)
(a)What is organic evolution
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(c)Distinguish between convergent and divergent evolution
Date posted: September 13, 2017. Answers (1)
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Define the term:
i)Greenhouse effect
ii)Global warming
Date posted: September 13, 2017. Answers (1)
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(a) Give the importance of nitrogen cycle in the atmosphere
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Date posted: September 13, 2017. Answers (1)
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Date posted: September 13, 2017. Answers (1)
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Give three distinguishing features of class Aves
Date posted: September 13, 2017. Answers (1)
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State the economic importance of the following excretory products in plants
i)Nicotine
ii)Quinine
Date posted: September 13, 2017. Answers (1)
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Date posted: September 13, 2017. Answers (1)
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(a) What is anaphylaxis
(b)Give the difference between artificial active acquired and natural active acquired immunity
(c) State how the following structural features affect transpiration
i)Leaf fall
ii)Sunken stomata
iii)Thin cuticle
Date posted: September 13, 2017. Answers (1)
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Date posted: September 13, 2017. Answers (1)
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ii)Metabolic poisons
Date posted: September 13, 2017. Answers (1)
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Date posted: September 13, 2017. Answers (1)
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(a)Give two contribution made by Carolus Linnaeus to classification
(b) Classify a Human being base on the Order and Family it belong
Date posted: September 13, 2017. Answers (1)
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In what two ways does excretion differ between plants and animals?
Date posted: September 13, 2017. Answers (1)
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Define facultative anaerobes as used in respiration.
Date posted: September 13, 2017. Answers (1)
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Why is dropping of leaves important to plants on a hot sunny afternoon?
Date posted: September 13, 2017. Answers (1)
- The equation below represents a metabolic reaction that occurs in the mammalian liver
Amino acids -------> Organic compounds + urea(Solved)
The equation below represents a metabolic reaction that occurs in the mammalian liver
Amino acids ------->Organic compounds + urea
(a) Name the process
(b) What is the course of amino acids in the process?
(c) What is the difference between essential and non-essential amino acids?
Date posted: September 13, 2017. Answers (1)
- The chemical equation shown below represents a breakdown of a certain substrate.
C57H104O6 + 80O2----->57CO2 + 52H2O + Energy(Solved)
The chemical equation shown below represents a breakdown of a certain substrate.
C57H104O6 + 80O2----->57CO2 + 52H2O + Energy
(a) Calculate the respiratory quotient (RQ) of the substrate
(b) Identify the possible substrate which was oxidized
Date posted: September 13, 2017. Answers (1)
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Name three types of nerve cells found in the nervous system of vertebrates
Date posted: September 13, 2017. Answers (1)
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Peter stayed with his parents in Malindi for eight years. His red blood cell count was about 4.5 million per one milliliter of blood. They migrated to Kisii town and after one year his red blood cell count was approximately 6.2 million per one milliliter of blood. Explain reason for rise in the number of red blood cells.
Date posted: September 13, 2017. Answers (1)
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Date posted: September 13, 2017. Answers (1)