Multiple Choice Questions

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The photorespiratory carbon-oxidation cycle involves the interaction of

  • chloroplast

  • mitochondria

  • peroxisomes

  • all of these


D.

all of these

Photorespiration is a metabolic pathway that occurs in plants in the presence of light, in which ribulose bisphosphate carboxylase/oxygenase the (RuBisCO) enzyme involved in carbon dioxide fixation with ribulose bisphosphate, accepts oxygen, in place of carbon dioxide, resulting in the formation of a twocarbon compound, glycolate. Most of the fixed carbon represented by the glycolate can be salvaged by a series of reactions-the glycolate pathway involving the peroxisomes and mitochondria, and returned to the chloroplasts. However, some of the carbon is lost as carbon dioxide. Unlike respiration there is no production of ATP.


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Glycolysis is found in cytoplasm of virtually all types of aerobic/ anaerobic cells. In this process glucose is converted into

  • PEP

  • acetyl CoA

  • pyruvic acid

  • citric acid


Ambulacral grooves are absent in the living forms of the Class

  • Crinoidea

  • Asteroidea

  • Ophiuroidea

  • Echinodermata


Which of the following is related to glycosylation of protein?

  • Lysosome

  • Mitochondrium

  • Peroxisome

  • Rough endoplasmic reticulum


The ganglia of sympathetic and the central nervous system in frog develops from the

  • neural cell

  • neural plate cells

  • notochordal cells

  • neural crest cells


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Bud dormancy is induced by

  • ABA

  • ethylene

  • IAA

  • gibberellic acid


A chromosome carrying the centromere at one of the ends is called

  • acentric

  • submetacentric

  • telocentric

  • metacentric


Which of the following teeth are lophodont?

  • Incisor and canine

  • Canine and premolar

  • Premolar and molar

  • Premolar and incisor


Excretion in cockroach takes place by

  • nephridium

  • parotid gland

  • coxal glands

  • malpighian tubules


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Which of the following digestive juices has the minimum pH value?

  • Bile

  • Gastric juice

  • Saliva

  • Pancreatic juice