MCQ
Protozoans are also called
- ✓Unicellular
- BMulticellular
- CAcellular
- DProkaryotic
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Column-$I$ |
Column-$II$ |
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$(a)$ Tricuspid valve |
$(i)$ Between left atrium and left ventricle |
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$(b)$ Bicuspid valve |
$(ii)$ Between right ventricle and pulmonary artery |
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$(c)$ Semilunar valve |
$(iii)$ Between right atrium and right ventricle |
$I.$ Breathing or pulmonary ventilation
$II.$ Diffusion of $O _{2}$ and $CO _{2}$ between blood and tissues
$III.$ Transport of gases by blood
$IV.$ Utilisation of $O_{2}$ by cells
$V.$ Diffusion of $O _{2}$ and $CO _{2}$ across the alveolar membrane
Choose the correct option
$CO _{2}+ H _{2} O \stackrel {A} {\rightleftharpoons} H _{2} CO _{3} \stackrel {B} {\rightleftharpoons} \rightleftharpoons HCO _{3}^{-}+ H ^{+}$