Reduction of pH of blood will decrease the affinity of hemoglobin with oxygen which in turn causes acidosis.

Correct Option: C

Reduction of pH of blood will decrease the affinity of hemoglobin with oxygen which in turn causes acidosis.

In human RBCs, nucleus get degenerates during maturation and it provide more space for oxygen carrying pigment (haemoglobin). It lacks many cell organelles including mitochondria so respires anaerobically.

Correct Option: D

In human RBCs, nucleus get degenerates during maturation and it provide more space for oxygen carrying pigment (haemoglobin). It lacks many cell organelles including mitochondria so respires anaerobically.

SA is the site of generation of the rhythmic cardiac impulse. AV node is a compact mass of myogenic fibres which receives impulse from SA node and transmits it to ventricles. Purkinje fibres are in contact with the contractile muscles of the ventricular walls. Chordae tendinae are the muscles which keep the AV valves in position.

Correct Option: B

SA is the site of generation of the rhythmic cardiac impulse. AV node is a compact mass of myogenic fibres which receives impulse from SA node and transmits it to ventricles. Purkinje fibres are in contact with the contractile muscles of the ventricular walls. Chordae tendinae are the muscles which keep the AV valves in position.

Alkaptonuria (also known as blackurine disease) is excretion of large amount of alkapton in urine which when comes in the contact with light turn black and it is caused by gene mutation. Hematuria is presence of blood or RBCs in urine, proteinuria is presence of protein in the urine.

Correct Option: C

Alkaptonuria (also known as blackurine disease) is excretion of large amount of alkapton in urine which when comes in the contact with light turn black and it is caused by gene mutation. Hematuria is presence of blood or RBCs in urine, proteinuria is presence of protein in the urine.

Haemophilia is a sex linked disease (linked with X chromosomes). In this disease, blood lacks the thromboplastin protein which causes blood clotting during injury. In normal human, blood clots in 2-6 min. While in haemophilic human, it may take from 3 hrs to 24 hrs due to which death may occur. This disease was Ist discovered by Jon Catto in 1803. The most famous families in which the inheritance of this disease was found were the Royal families of Britain & Russia, so it is also called Royal disease.

Correct Option: C

Haemophilia is a sex linked disease (linked with X chromosomes). In this disease, blood lacks the thromboplastin protein which causes blood clotting during injury. In normal human, blood clots in 2-6 min. While in haemophilic human, it may take from 3 hrs to 24 hrs due to which death may occur. This disease was Ist discovered by Jon Catto in 1803. The most famous families in which the inheritance of this disease was found were the Royal families of Britain & Russia, so it is also called Royal disease.