Biology MCQs

Page No. 38

During rest the breathing occurs rhythmically at the frequency of _________ times per minute in human?


a16-30


b15-20


c5?10


d6?12


View Answer 15-20

___________ respiration is the process by which cell utilized oxygen and produces CO2 ?


aCellular


bOrganismic


cBoth of these


dNone of these


View Answer Cellular

Lungs are covered with double layered thin membranous sac called___________?


aDisphragm


bPleura


cPericardium


dRib cage


View Answer Pleura

___________ respiration is directly involved in the production of energy, necessary for all living activities?


aOrganismic


bCellular


cBoth of these


dNone of these


View Answer Cellular

Lungs are spongy due to the presence of million of___________?


aAir sacs


bAlveoli


cBronchioles


dParabronchi


View Answer Alveoli

Functional units of lungs are called________?


aAlveoli


bAir sacs


cParabronchi


dNone of these


View Answer Air sacs

Breaking of terminal phosphate of ATP releases about ___________ Kcal of energy?


a6.1


b6.3


c7.1


d7.3


View Answer 7.3

ATP are consumed during___________?


aGlycolysis


bKreb’s cycle


cLight dependent phase


dnone of these


View Answer Glycolysis

Cellular respiration is essentially a/an _____________ process?


aOxidation


bReduction


cRedox


dNone of the above


View Answer Oxidation

From one pyruvate passing through Kreb’s cycle, how many NADH are formed?


a1


b2


c3


d4


View Answer 3

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