Which one the following is a symbiotic nitroger fixer?
Options
(a) Azotobacter (b) Frankia (c) Azolla (d) Glomus
Correct Answer:
Frankia
Explanation:
Frankia is symbiotic nitrogen dicer in root nodules of serveral non-legume […]
The incorrect statement with regard to Haemophilia is:
Options
(a) It is a recessive disease (b) It is a dominant disease (c) A single proein involved in the clotting of blood is affected […]
The first clinical gene therapy was given for treating
Options
(a) chicken pox (b) diabetes mellitus (c) rheumatoid arthritis (d) adenosine deaminase deficiency
Correct Answer:
adenosine deaminase deficiency
Explanation:
No explanation available. Be […]
The body calcium level is lowered by the deficiency of
Options
(a) parathormone (b) thyroxine (c) both calcitonin and parathormone (d) calcitonin
Correct Answer:
parathormone
Explanation:
A peptide hormone secreted by the parathyroid gland […]
One of the free-living, anaerobic nitrogen – fixer is:
Options
(a) Beijiernickia (b) Rhodospirillum (c) Rhizobium (d) Azotobacter
Correct Answer:
Rhodospirillum
Explanation:
Rhodospirillum is a free-living, anaerobic nitrogen fixer bacteria. It can synthesize […]
During mitosis ER and nucleolus begin to disappear at:
Options
(a) late prophase (b) early metaphase (c) late metaphase (d) early prophase
Correct Answer:
early prophase
Explanation:
During mitosis. endoplasmic reticulum and nucleus begins […]
Best defined function of Manganese is green plants is:
Options
(a) photolysis of water (b) Calvin cycle (c) Nitrogen fixation (d) Water absorption
Correct Answer:
photolysis of water
Explanation:
The best defined function […]
The essential chemical components of many coenzymes are:
Options
(a) Nucleic acids (b) Carbohydrates (c) Vitamins (d) Proteins
Correct Answer:
Vitamins
Explanation:
The essential chemical components of many enzymes are vitamins, e.g., coenzyme nicotinamide […]
Inheritances of skin colour in humans is an example of
Options
(a) point mutation (b) polygenic inheritance (c) codominance (d) chromosomal aberration
Correct Answer:
polygenic inheritance
Explanation:
Inheritance of skin colour in human […]
Cyclic photophosphorylation results in the formation of
Options
(a) ATP and NADPH (b) ATP, NADPH and O₂ (c) ATP (d) NADPH
Correct Answer:
ATP
Explanation:
Cyclic photophosphorylation results in the formation of ATP. This […]
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