MCQOPTIONS
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MCQOPTIONS
This section includes 5751 Mcqs, each offering curated multiple-choice questions to sharpen your Biology knowledge and support exam preparation. Choose a topic below to get started.
| 4001. |
During strenous exercise,glucose is converted into (B.H.U.2005) |
| A. | Glycogen |
| B. | Pyravic acid |
| C. | Starch |
| D. | Lactic acid |
| Answer» E. | |
| 4002. |
How much pulmonary air is expired normally (Har.P.M.T.2005) |
| A. | 70% |
| B. | 20% |
| C. | 25% |
| D. | 32% |
| Answer» E. | |
| 4003. |
:- Where the A and B parys, Labeled in given figure are ended? |
| A. | Bronchus and Lungs |
| B. | Bronchioles and Lungs |
| C. | Trachea and Bronchioles |
| D. | Bronchus and Alveoli |
| Answer» D. Bronchus and Alveoli | |
| 4004. |
Mountain sickness at high altitude is due to (C.P.M.T.2005) |
| A. | Excess co2 in blood |
| B. | Decreased CO2 in air |
| C. | Decreased partial pressure of oxygen |
| D. | Decreased efficiency of haemoglobin |
| Answer» D. Decreased efficiency of haemoglobin | |
| 4005. |
:- What is indicated by “A” in figure ? |
| A. | Alveoli |
| B. | Lungs |
| C. | Heart |
| D. | Trachea |
| Answer» D. Trachea | |
| 4006. |
During inspiration (J.I.PME.R.2004,Orissa 2005,R.PMT.2005) |
| A. | Diaphragm and external muscles relax |
| B. | Diaphragm and internal intercostal muscles relax |
| C. | Diaphragm and external intercostal muscles contract |
| D. | Diaphragm and internal intercostal muscles contract. |
| Answer» D. Diaphragm and internal intercostal muscles contract. | |
| 4007. |
Which is incorrect ? (C.B.S.E.2006) |
| A. | Presence of nonrespiratory air sacs increases efficinency of respiration in birds |
| B. | In insects,circulation body fluids serve to distribute oxygen to tissues |
| C. | Principle of counter - current flow facilitates efficient respiration in gills of fishes |
| D. | Residual air in lungs slightly decreases the efficiency of respiration in mammals |
| Answer» C. Principle of counter - current flow facilitates efficient respiration in gills of fishes | |
| 4008. |
Which is fundamental property of all living organisms ? |
| A. | Respiration |
| B. | Germination |
| C. | Growth |
| D. | Photosynthesis |
| Answer» D. Photosynthesis | |
| 4009. |
Capacity of human lungs for air in a healthy person is (Orissa 2005) |
| A. | 3000 ml |
| B. | 1500 ml |
| C. | 1000 ml |
| D. | 500 ml |
| Answer» B. 1500 ml | |
| 4010. |
Rate of breathing is controlled by |
| A. | Amount of freely avilable oxygen |
| B. | Carbon dioxide in blood |
| C. | Muscular functions of body |
| D. | All the above |
| Answer» C. Muscular functions of body | |
| 4011. |
With how many cell reproduction starts ? |
| A. | Two cell |
| B. | Single cel |
| C. | Many cells |
| D. | Somatic cell |
| Answer» C. Many cells | |
| 4012. |
Percenatage of oxygen being carried by blood plasma is (Orissa 2006) |
| A. | 6-9% |
| B. | 3-6% |
| C. | 2-3% |
| D. | 1-2% |
| Answer» D. 1-2% | |
| 4013. |
The two chromatids of a metaphase chromosome represents : |
| A. | homologous chromosome of a diploid set |
| B. | replicated chromosomes to be separated at anaphase |
| C. | non-homologous joined at the centromere |
| D. | maternal and paternal chromosomes joined at the centromere |
| Answer» C. non-homologous joined at the centromere | |
| 4014. |
Synthesis of RNA and protein takes place in which phase of the cell cycle ? |
| A. | S-phase |
| B. | M-phase |
| C. | G1-phase |
| D. | Metaphase |
| Answer» D. Metaphase | |
| 4015. |
Which structure can be observed at the surface of centromere during metaphase ? |
| A. | Kinetochore |
| B. | Chromatophore |
| C. | Kinetophore |
| D. | Chromatophore |
| Answer» B. Chromatophore | |
| 4016. |
Which of the following is present in maximum number in an adult person ? |
| A. | Somatic cell |
| B. | Gamete |
| C. | Reproductive cell |
| D. | Zygote |
| Answer» B. Gamete | |
| 4017. |
Mitosis actually means…… |
| A. | Reduction in number of chromosomes |
| B. | Division of nucleus only |
| C. | Division of cytoplasm only |
| D. | Both nuclear (Karyokinesis) and cytoplasmic divisions. |
| Answer» E. | |
| 4018. |
Approximately how many cells are present in the body of an adult person ? |
| A. | 1014 |
| B. | 1015 |
| C. | 1018 |
| D. | 1021 |
| Answer» B. 1015 | |
| 4019. |
:- Make the correct pairs. |
| A. | Pneumonia |
| B. | Bronchitis |
| C. | Emphysema |
| D. | Asbetosis |
| Answer» E. | |
| 4020. |
What is synthesized during G2 – phase ? |
| A. | Protein |
| B. | Micro tubules |
| C. | RNA |
| D. | (a) and (b) |
| Answer» E. | |
| 4021. |
On respitatory surface,KHCO3 formed in RBC reacts with |
| A. | H.HbO2 |
| B. | CI- |
| C. | H.Hb |
| D. | Hb |
| Answer» B. CI- | |
| 4022. |
During inhalation the following activities occur |
| A. | Area of rib cage increases, diaphragm is pulled upwards |
| B. | Area of rib cage increases, diaphragm is pulled downward |
| C. | Area of rib cage reduces, diaphram gets contracted |
| D. | Area of rib cage reduces, diaphram gets relaxed. |
| Answer» C. Area of rib cage reduces, diaphram gets contracted | |
| 4023. |
CO2 combines in human RBC with the which ion of haemoglobin |
| A. | -NH2 |
| B. | -OH- |
| C. | -H+ |
| D. | – COOH |
| Answer» B. -OH- | |
| 4024. |
The full from of Hb is |
| A. | Hydrogen bromide |
| B. | Henson bond |
| C. | Hydrogen bond |
| D. | Haemoglobin |
| Answer» E. | |
| 4025. |
This disease is due lo allergens |
| A. | Emphysema |
| B. | Bronchitis |
| C. | Pneumonia |
| D. | Asthma |
| Answer» E. | |
| 4026. |
Blood transports oxygen in the form of |
| A. | HHbO2 |
| B. | KHCO3 |
| C. | KHbO2 |
| D. | H2CO3 |
| Answer» D. H2CO3 | |
| 4027. |
What is role of buffer system in blood ? |
| A. | To maintain pH of blood plasma |
| B. | To maintain pH of blood |
| C. | To maintain pH of RBC |
| D. | To maintain pH of blood platelets |
| Answer» C. To maintain pH of RBC | |
| 4028. |
The left lung is slightly smaller so as |
| A. | It is exception |
| B. | No specific reason |
| C. | Both A and B |
| D. | To accommodate heart. |
| Answer» E. | |
| 4029. |
AIDS patients are susceptible to this respiratoty disease |
| A. | Pneumonia |
| B. | Fibrosis |
| C. | Emphysema |
| D. | Asthma |
| Answer» B. Fibrosis | |
| 4030. |
The muscles take part in rapid breathing |
| A. | Muscles of rib cage |
| B. | Muscles of neck region and abdominal region |
| C. | Thoracic and abdominal muscles |
| D. | Muscles of neck region and thoracic region. |
| Answer» C. Thoracic and abdominal muscles | |
| 4031. |
They respire through lungs |
| A. | Fish |
| B. | Cockroaches |
| C. | Crocodiles |
| D. | Earthworms |
| Answer» D. Earthworms | |
| 4032. |
In which three forms of CO2 is transported by blood |
| A. | As a solution, carbamino compunds, bicarbonates |
| B. | As a solution, carbamino proteins,KHCO3 |
| C. | As a solution, carbamino haemoglobin, NaHCO3 |
| D. | As A solution, carbamino compound H2CO3 |
| Answer» C. As a solution, carbamino haemoglobin, NaHCO3 | |
| 4033. |
The enzyme carbonic anhydrase is of which type? |
| A. | Lyases |
| B. | reversible |
| C. | Unidirectional |
| D. | Isomerase. |
| Answer» C. Unidirectional | |
| 4034. |
Blockage in respiratory passage in humans is prevented due to the presence of |
| A. | Epiglottis |
| B. | Larynx |
| C. | Alveoli |
| D. | ‘C’ shaped cartilagenous rings. |
| Answer» E. | |
| 4035. |
In human beings |
| A. | Left lung is slightly smaller |
| B. | Left lung is slightly wider |
| C. | Right lung is slightly smaller |
| D. | Both lungs are of similar size. |
| Answer» B. Left lung is slightly wider | |
| 4036. |
In which disease lung tissue degenerate? |
| A. | Bronchitis |
| B. | Pneumonia |
| C. | Asthma |
| D. | Emphysema. |
| Answer» E. | |
| 4037. |
The centre which excites both the activities during rapid breathing is |
| A. | Ventral respiratory center |
| B. | Lateral respiratory center |
| C. | Pneumotoxic center |
| D. | Dorsal respiratory center. |
| Answer» B. Lateral respiratory center | |
| 4038. |
Human lungs are situated in |
| A. | Abdominal cavity |
| B. | Thoracic cavity |
| C. | Inside diaphragm |
| D. | Abdominal cavity |
| Answer» C. Inside diaphragm | |
| 4039. |
Which one is not viral infection |
| A. | Vocational lung disease |
| B. | Bronchitis |
| C. | Asthma |
| D. | Emphysema. |
| Answer» B. Bronchitis | |
| 4040. |
Which is the lung disorder related to profession? |
| A. | Silicosis |
| B. | Emphysema |
| C. | Pneumonia |
| D. | Asthma |
| Answer» B. Emphysema | |
| 4041. |
This disease is due to first virus infection followed by bacterial attack |
| A. | Asthma |
| B. | Bronchitis |
| C. | Emphysema |
| D. | Allergy |
| Answer» C. Emphysema | |
| 4042. |
Dissociation curve of O2 (which is dissociation from Hb) shifts to the rights.... |
| A. | O2 concentration decrease |
| B. | CO2 concentration decreases |
| C. | CO2 concentration increase |
| D. | Chloride concentration increases |
| Answer» D. Chloride concentration increases | |
| 4043. |
H.Hb is |
| A. | H2b |
| B. | Heavy hydrogen bond |
| C. | Reduced bromide |
| D. | Haemoglobin acid |
| Answer» E. | |
| 4044. |
The function of pneumotoxic center is |
| A. | To regulate inhalation |
| B. | To maintain rhythmicity of respiration |
| C. | Increases rate of ethalation |
| D. | Does not play significant role. |
| Answer» B. To maintain rhythmicity of respiration | |
| 4045. |
The disease in which masses of undifferentiated cells formed in tracheal walls |
| A. | Acute bronchitis |
| B. | Emphysema |
| C. | Lung cancer |
| D. | Pneumonia |
| Answer» D. Pneumonia | |
| 4046. |
Carbamino proteins are formed in |
| A. | Blood plasma |
| B. | Blood platelets |
| C. | Blood cells |
| D. | RBC |
| Answer» B. Blood platelets | |
| 4047. |
What is correct ? (Orissa 2003) |
| A. | Pulomonary ventilation is equal to alveolar ventilation |
| B. | Alveolar ventilation is less than pulmonary ventilation |
| C. | Alveolar ventilation is more than pulmonary ventilation |
| D. | Both are variable. |
| Answer» C. Alveolar ventilation is more than pulmonary ventilation | |
| 4048. |
Oxygen and carbon dioxide are transported in blood through (CB.S.E.1996) |
| A. | Platelets and corpuscles |
| B. | RBCs and WBCs |
| C. | WBCs and serum |
| D. | RBCs and plasma |
| Answer» E. | |
| 4049. |
Vocal cords occur in |
| A. | Pharynx |
| B. | Larynx |
| C. | Glottis |
| D. | Bronchial tube |
| Answer» C. Glottis | |
| 4050. |
A child was killed through asphyxiation. Post morturm confirmed it because a piece of lung put in water (M.P.PMT.1996) |
| A. | Settled dowm |
| B. | Kept floating |
| C. | Had blood spots |
| D. | None of the above |
| Answer» C. Had blood spots | |