What is the oxidation state of iron in haemoglobin?
| 1. | Fe- | 2. | Fe2+ |
| 3. | Fe3+ | 4. | Fe4+ |
Identify the given figure and select the correct option
| 1. | Neutrophil - phagocytic cell which destroy foreign organisms entering the body |
| 2. | Eosinophil - their number increases during allergic infection |
| 3. | Lymphocyte - small sized non-motile and non-phagocytic |
| 4. | Monocyte - motile and phagocytic in nature |
Which one of the following vitamins is anti-haemorrhagic?
| 1. | Vitamin B12 | 2. | Vitamin B5 |
| 3. | Vitamin C | 4. | Vitamin K |
Mature RBCs lose their ability for
| 1. | DNA replication |
| 2. | Anaerobic respiration |
| 3. | Aerobic respiration and DNA replication |
| 4. | Aerobic respiration, DNA replication and RNA synthesizing machinery |
The given figure shows schematic plan of blood circulation in humans with labels A to D. Identify the labels along with their functions and select the correct option.
| 1. | C - Vena Cava - takes blood from body parts to right atrium, PCO2 = 45 mm Hg |
| 2. | D - Dorsal aorta - takes blood from heart to body parts, PO2 = 95 mm Hg |
| 3. | A - Pulmonary vein - takes impure blood from body parts to heart, PO2 = 60 mm Hg |
| 4. | B - Pulmonary artery - takes blood from heart to lungs, PO2 = 90 mm Hg. |
After examining the blood groups of husband and wife, the doctor advised them not to have more than one child. The blood groups of the couple are likely to be
| 1. | Male Rh- and Female Rh+ | 2. | Male Rh+ and Female Rh+ |
| 3. | Male Rh+ and Female Rh- | 4. | Male Rh- and Female Rh- |
Which of the following human organs is called the 'graveyard of RBCs?
| 1. | Gall bladder | 2. | Kidney |
| 3. | Spleen | 4. | Liver |
Haemoglobin is
| 1. | an oxygen carrier in human blood | 2. | a protein used as food supplement |
| 3. | an oxygen scavenger in root nodules | 4. | a plant protein with high lysine content |
Which of the following matches correctly?
| 1. | Factor II - Thromboplastin |
| 2. | Factor III - Prothrombin |
| 3. | Factor VIII - Antihaemophilic globulin |
| 4. | Factor XII - Haemophilic |
Which of the following matches correctly?
| 1. | Inferior vena cava - Receives deoxygenated blood from the head and body |
| 2. | Superior vena cava - Receives deoxygenated blood from the lower body and organs |
| 3. | Pulmonary artery - Carries deoxygenated blood to the lungs |
| 4. | Hepatic artery - Carries deoxygenated blood to the gut |