• MCQ

    MCQ on Breathing and Exchange of Gases

    Dead space air is  The amount of air left in lungs after deepest expiration.  About 150 ml  Both of these  None of these Answer: 2 The amount of air left in the lungs after the deepest expiration is Residual air.  2. When fully saturated, one molecule of oxyhaemoglobin carries the following number of oxygen molecules.  Two  Three  Four  None of these  Answer: 3 One molecule of Haemoglobin contains four molecules of Haem, so four iron atoms, for carrying for molecules of Oxygen 3.Which of the following breathing process in human is passive  Expiration Aspiration  Inspiration  Forced breathing  Answer: 1 4. The amount of oxygen in tidal vol. is approximately  1…

  • Biology

    FIVE KINGDOM SYSTEM

    In this lesson, we discussing five kingdom classification. Five kingdom classification is proposed by R.H.Whittaker in 1969. the kingdom defined by him were named Monera, Protista, Fungi, Plantae, and Animalia. In this lesson, we show a brief introduction to these kingdoms for more information on kingdom please visit a particular lesson on that kingdom. Main Criteria used for this classification are cell structure, thallus organization, mode of nutrients, reproduction and phylogenetic relationship. Besides these major characteristics, he has also given importance to characters of ecological role-played and mode of reproduction. Major criteria on which five-kingdom classification is based Criterion Kingdom Monera Protista Plantae Fungi Animalia Cell type Prokaryotic Eukaryotic Eukaryotic Eukaryotic Eukaryotic…