MCQ
Chemosynthetic bacteria obtain energy from:
- Asun.
- BInfra red rays.
- COrganic substances.
- DInorganic chemicals.
Explanation:
Chemosynthetic autotrophic bacteria (chemoautotrophic bacteria) are bacteria which are able to manufacture their organic food from inorganic raw materials with the help of energy derived from exergonic chemical reactions involving oxidation of an inorganic substance present in the external medium. The chemical energy obtained from oxidation reaction is trapped in ATP molecules. They play a great role in recycling nutrients like nitrogen, phosphorous, iron and sulphur. There are several types of chemoautotrophic bacteria but the well known examples are nitrifying bacteria, sulphur oxidising bacteria, and iron bacteria.
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$A$. Basophils are most abundant cells of the total WBCs
$B$. Basophils secrete histamine, serotonin and heparin
$C$. Basophils are involved in inflammatory response
$D$. Basophils have kidney shaped nudeus
$E$. Basophils are agranulocytes
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