Multiple Choice QuestionsWhich of the following waste products in grasshopper is not excreted and is used in other metabolic activities
Carbon dioxide
Water
Uric acid
Faeces
B.
Water
Excretory organs of grasshopper are the Malpighian tubules and the main excretory product is uric acid. Malpighian tubules of insects such as grasshoppers not only help to excrete the waste but also function to conserve water, which is then used in other metabolic activities. In the Malpighian tubules, bicarbonates of potassium and sodium, water and uric acid are formed during the process, of excretion. A large amount of water and bicarbonates of potassium and sodium are reabsorbed by the cells of Malpighian tubules and then transferred to the blood (haemolymph). Uric acid is carried to the alimentary canal of the insect and is finally passed out through anus.
When kidney of a person is damaged, he/she invariably suffers from anaemia because
RBCs pass through the glomerulus
sufficient erythropoietin is not produced
haemoglobin is not synthesised sufficiently
iron and vitamin B12 are not able to bind to haemoglobin
The checkpoint in cell cycle plays important role in
repair DNA damage
apoptosis initiation
assess DNA damage
inhibit cell damage.
Which enzyme helps in transfer of phosphate group from ATP to a carbohydrate
Phosphatase
ATPase
Phosphorylase
Catalase
Carbon dioxide is necessary for photosynthesis. The chemical used to remove this gas most effectively from entering a control apparatus is
calcium oxide
distilled water
potassium hydroxide solution
sodium carbonate.
Barr Body is found in the cytoplasm during
interphase in cell of female mammal
interphase in cell of male mammal
prophase in cell of female mammal
prophase in cell of male mammal.
Gibberellins can promote seed germination because of their influence on
rate of cell division
production of hydrolysing enzymes
synthesis of abscisic acid
absorption of water through hard seed coat.
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