BIOLOGY
JAMB 2010 - Question 25
Biology 2010 JAMB Past Questions - Question 25: Chemosynthetic organisms are capable of manufacturing their food from simple inorganic substances through the process of
Choose the most appropriate option for the gap .
A:
B:
C:
D:
Correct Answer
D
Explanation
Autotrophicbacteria like Iron bacteria, sulphur bacteria and nitrifying bacteria arecapable of oxidizing inorganic substances (Iron sulphide, hydrogen sulphide and ammonia)to release energy needed to form organic compound (carbohydrate) from carbon IV oxide and water. Example, Sulphur bacteria oxidize hydrogen sulphide to produce chemical energy. Denitrification is the process of converting excess nitrate in the soil into atmospheric nitrogen by denitrifying bacteria. Phosphorylation is the addition of phosphate group to glucose (sugar) molecule to form glucose phosphate. This process occurs during glycolysis.
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