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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.
| 3951. |
Lungs have a number of alveoli for (M.P.PMT.1995) |
| A. | Having spongy texture and proper shape |
| B. | More surface area for diffusion of gases |
| C. | More space for increasing volume of inspired air |
| D. | More nerve supply. |
| Answer» C. More space for increasing volume of inspired air | |
| 3952. |
In expiration, diaphragm becomes (C.P.M.T.1993) |
| A. | Flattened |
| B. | Relaxed |
| C. | Straightened |
| D. | Arched |
| Answer» C. Straightened | |
| 3953. |
Chloride shift is required for transport of (CPMT.1990) |
| A. | Nitrogen |
| B. | Oxygen |
| C. | Carbon dioxide |
| D. | Carbon dixide and oxygen |
| Answer» D. Carbon dixide and oxygen | |
| 3954. |
Where Bicarbonate is conveted into carbonic acid |
| A. | In the RBC of capillaries around the lungs |
| B. | In the body fluid |
| C. | In the areolar cavity of lungs |
| D. | In the RBC of blood capillaries around body tissue. |
| Answer» B. In the body fluid | |
| 3955. |
Maximum amount 70-75% of carbon dioxide transport occurs as (R.P.M.T.1996,1998,Kamataka 1997,M.P.PMT.1998,C.P.M.T.1998,B.V.2002) |
| A. | Dissolved in plasma |
| B. | Carbaminohaemoglobin complex |
| C. | Bicarbonate |
| D. | None of the above |
| Answer» D. None of the above | |
| 3956. |
Which is false ? (Manipal 1995) |
| A. | Blood from right side of heart is carried to lungs by pulmonary artery |
| B. | Pleura is double covering of kindey |
| C. | Pancreas is both exocrine & endocrine gland |
| D. | Scurvy is due to vitamin C deficiency. |
| Answer» C. Pancreas is both exocrine & endocrine gland | |
| 3957. |
CO2 from RBC enters blood plasma in the form of |
| A. | H2CO3 |
| B. | HCO3– |
| C. | KHCO3 |
| D. | NaHCO3 |
| Answer» C. KHCO3 | |
| 3958. |
Volume of air breathed in and out during effortless respiration is (Kerala 2001) |
| A. | residual volume |
| B. | vital volume |
| C. | tidal volume |
| D. | normal volume |
| Answer» D. normal volume | |
| 3959. |
Hamburger’s phenomenon is also known as(CPMT.1988,1991,AMU.2001,J.LPME.R.2002) |
| A. | HCO3– shift |
| B. | Na+ shift |
| C. | H+ shift |
| D. | Chloride shift |
| Answer» E. | |
| 3960. |
Presence of large number of alveoli around alveolar ducts opening into bronchioles in mammalian lungs is (C.B.S.E.1995) |
| A. | Inefficient system of ventilation with little of residual air |
| B. | Inefficient system of ventilation with high percentage of residual air |
| C. | An efficient system of ventilation with no residual air |
| D. | An efficient system of ventilation with little residual air. |
| Answer» E. | |
| 3961. |
Carbon dioxide is transported from tissues to respiratory surface by only(C.B.S.E.1993) |
| A. | Plasma and erythrocytcs |
| B. | Plasma |
| C. | Erythrocytes |
| D. | Erythrocytes and leucocytes. |
| Answer» B. Plasma | |
| 3962. |
Maximum amount of O2 is transported in humans by |
| A. | RBC |
| B. | WBC |
| C. | Blood platelets |
| D. | Blood plasma |
| Answer» B. WBC | |
| 3963. |
Volume of air inspired or expired with each normal breath is known as(CMPT.1992,AMU.2000) |
| A. | Inspiratory capacity |
| B. | Total Lung capacity |
| C. | Tidal volume |
| D. | Residual volume |
| Answer» D. Residual volume | |
| 3964. |
Respiratory centre is situated in CPMT.1980,2002,B.H.U.1995,M.P.P.M.T.1998,C.B.S.E.1999,R.PMT.2006) |
| A. | Cerebellum |
| B. | Medulla oblongata |
| C. | Hypothalamus |
| D. | Cerebrum |
| Answer» C. Hypothalamus | |
| 3965. |
At higher CO2 condtcentration,oxygen dissociation curve of haemoglobin will (CPMT.1990) |
| A. | Move to left |
| B. | Move to right |
| C. | Become irregular |
| D. | Move upwardly |
| Answer» C. Become irregular | |
| 3966. |
Body tissue obtain oxygen from haemoglobin due to its dissociation in tissues caused by (M.P.PMT.1995) |
| A. | Low oxygen concentration and high carbon dioxide concentration |
| B. | Low oxygen concentration |
| C. | Low carbon dioxide concentration |
| D. | High carbon dioxide concentration. |
| Answer» C. Low carbon dioxide concentration | |
| 3967. |
Is Double membrane pleard sac is situated...... (J.K.C.M.E.E.1992) |
| A. | Envelops the kidneys |
| B. | Envelops the brain |
| C. | Envelops the lungs |
| D. | Lines the nasal passage |
| Answer» D. Lines the nasal passage | |
| 3968. |
Respiratory movements are controlled by (A.P.M.E.E.1978,C.P.M.T.1998) |
| A. | Cerebelluam |
| B. | Cerebrum |
| C. | Medulla oblongata |
| D. | Crura cerebri |
| Answer» D. Crura cerebri | |
| 3969. |
Respiration rate is the lowest during. |
| A. | Running |
| B. | Playing |
| C. | Eating |
| D. | Sleeping |
| Answer» E. | |
| 3970. |
The human ribs |
| A. | Are accessory respiratory organs |
| B. | Do not help in breathing |
| C. | Are main respiratory organs |
| D. | Are not respiratory organs |
| Answer» E. | |
| 3971. |
During transport of CO2 blood does not become acidic due to (C.B.S.E.1995) |
| A. | Neutralisation of H2 CO3 by Na2 CO3 |
| B. | Absorption by leucocytes |
| C. | Blood buffers |
| D. | Non accumulation |
| Answer» D. Non accumulation | |
| 3972. |
At high altitude,RBCs of human blood will (C.B.S.E.1995,Pb.PMT.1999,J.LPM.E.R.2000) |
| A. | Increase in number |
| B. | Decrease in number |
| C. | Decrease in size |
| D. | Increase in size |
| Answer» B. Decrease in number | |
| 3973. |
In how many phase the mitosis can be divided ? |
| A. | 4 |
| B. | 8 |
| C. | 3 |
| D. | 5 |
| Answer» B. 8 | |
| 3974. |
Complete disintegration of nuclear membrane and nucleolus take place during which stage of mitosis ? |
| A. | Prophase |
| B. | Metaphase |
| C. | Anaphase |
| D. | Telophase |
| Answer» B. Metaphase | |
| 3975. |
Interphase can be divided into how many sub phases ? |
| A. | 2 |
| B. | 3 |
| C. | 8 |
| D. | 5 |
| Answer» C. 8 | |
| 3976. |
The result of meiosis is the formation of....... |
| A. | 4 cell |
| B. | 2 cells |
| C. | 8 cells |
| D. | 6 cells |
| Answer» D. 6 cells | |
| 3977. |
Pairing of homologous chromosomes during zygotene is termed : |
| A. | synapse |
| B. | synapsida |
| C. | synapsis |
| D. | crossing over |
| Answer» D. crossing over | |
| 3978. |
At which stage of mitosis chromatids separate and passes to different poles : |
| A. | Prophase |
| B. | Metaphase |
| C. | Anaphase |
| D. | Telophase |
| Answer» D. Telophase | |
| 3979. |
Pair of homologous chromosomes become arranged at the equatorial plane of the cell. |
| A. | Metaphase-II |
| B. | Metaphae-I |
| C. | Metaphase |
| D. | Zygotene |
| Answer» C. Metaphase | |
| 3980. |
The locations at which crossing over occurs are known as...... |
| A. | Centromere |
| B. | Kinetochore |
| C. | Chiasmata |
| D. | Centriole |
| Answer» D. Centriole | |
| 3981. |
Series of cell division is : |
| A. | prophase, metaphase, anaphase, telophase |
| B. | prophase, anaphase, metaphase, telophase |
| C. | prophase, metaphase, telophase, anaphase |
| D. | anaphase, metaphase, telophase, prophase |
| Answer» B. prophase, anaphase, metaphase, telophase | |
| 3982. |
Meiosis involves : |
| A. | two nuclear division and one chromosome division |
| B. | two each nuclear and chromosome division |
| C. | one each nuclear and chromosome division |
| D. | one nuclear and two chromosomes division |
| Answer» B. two each nuclear and chromosome division | |
| 3983. |
The chromosomes are distributed in two cells in half thir number is called. |
| A. | Mitosi |
| B. | Cytokineis |
| C. | Heterotypic division |
| D. | Cellcycle |
| Answer» D. Cellcycle | |
| 3984. |
During which of the following stage of division nuclear membrane and nucleolus reappear ? |
| A. | Prophase |
| B. | Metaphase |
| C. | Anaphase |
| D. | Telophase |
| Answer» E. | |
| 3985. |
Which of the correct order of phases in prophsae I ? |
| A. | Leptotene, diakinesis, pachytene, diplotene, zygotene |
| B. | Leptotene, zygotene, pachytene, diplotene, diakinesis |
| C. | Diakinesis, diplotene, pachytene, zygotene, leptotene |
| D. | Laptotene, pachytene, zygotene, diplotene, dikinesis |
| Answer» C. Diakinesis, diplotene, pachytene, zygotene, leptotene | |
| 3986. |
What is average cell cycle span of a Yeast cell ? |
| A. | 70 min. |
| B. | 85 min. |
| C. | 90 min. |
| D. | 120 min. |
| Answer» D. 120 min. | |
| 3987. |
Which of the following structure will not be common to mitotic cell of a higher plant ? |
| A. | Cell plate |
| B. | Centromere |
| C. | Centriole |
| D. | Spindle fibre |
| Answer» D. Spindle fibre | |
| 3988. |
During which of the following phase of mitosis asters appear round the centrioles ? |
| A. | Prophase |
| B. | Metaphase |
| C. | Anaphase |
| D. | Telophase |
| Answer» B. Metaphase | |
| 3989. |
The period between two successive divisions is called...... |
| A. | Cell division |
| B. | Cellcycle |
| C. | Interphase |
| D. | G1 phase |
| Answer» C. Interphase | |
| 3990. |
How many mitotic division are needed for a single cell to make 128 cells ? |
| A. | 54 |
| B. | 25 |
| C. | 34 |
| D. | 7 |
| Answer» E. | |
| 3991. |
Prophase is characterized by : |
| A. | spliting of centromere |
| B. | thread like appearance of chromosomes |
| C. | arrangement of chromosomes on metaphic plate |
| D. | pairing of homologous chromosome |
| Answer» C. arrangement of chromosomes on metaphic plate | |
| 3992. |
Column I represents diseases and column II represents their symptoms. Which of the following pairs are correct match for them (Guj.CE.T.2006) ColumnI ColumnII |
| A. | P - ii , Q - iv , R - i , S - iii |
| B. | P - ii , Q - i , R - iii , S - iv |
| C. | P - iv , Q - ii , R - iv , S - iii |
| D. | P - iv , Q - i , R - iii , S - ii |
| Answer» C. P - iv , Q - ii , R - iv , S - iii | |
| 3993. |
In how many cells the meiotic division has taken place, if the total number of gametes produced are 32 ? |
| A. | 4 |
| B. | 16 |
| C. | 8 |
| D. | 32 |
| Answer» D. 32 | |
| 3994. |
What is the average cell cycle span of a human cell ? |
| A. | 17 Hrs. |
| B. | 20 Hrs. |
| C. | 24 Hrs. |
| D. | 30 Hrs. |
| Answer» D. 30 Hrs. | |
| 3995. |
At Which sub stage of meiosis crossing over takes place ? |
| A. | Leptotene |
| B. | Zygotene |
| C. | Pachytene |
| D. | Diplotene |
| Answer» D. Diplotene | |
| 3996. |
:- What is indicated by A and B respectivity in the figure? |
| A. | Trachea and Pharynx |
| B. | Larynx and Pharynx |
| C. | Nasal chamber and Trachea |
| D. | Bronchus and Pharynx |
| Answer» C. Nasal chamber and Trachea | |
| 3997. |
Given :_ans_key_(1)Chromatid (2) Monad_ans_key_(3)Dyad (4) Daughter Chromosomes |
| A. | 1, 2, 3, 4 |
| B. | 2, 3, 1, 4 |
| C. | 3, 2, 1, 4 |
| D. | 4, 3, 2, 1 |
| Answer» C. 3, 2, 1, 4 | |
| 3998. |
During cell cycle DNA replication takes place in....... |
| A. | G1 - phase |
| B. | S - phase |
| C. | G2 - phase |
| D. | M - phase |
| Answer» C. G2 - phase | |
| 3999. |
During which phase can nucleolus be observed clearly ? |
| A. | Metaphase-II |
| B. | Early Prophase |
| C. | Anaphase |
| D. | Metaphase |
| Answer» C. Anaphase | |
| 4000. |
The period between two successive cell divisions in called........ |
| A. | Duplication |
| B. | Growth phase |
| C. | Cell cycl |
| D. | Interphase |
| Answer» D. Interphase | |