Choose the correct statements regarding muscle contraction
Choose the correct answer from the options given below:
| A. | A motor neuron carries a signal sent by the Central Nervous System (CNS) to the sarcolemma of the muscle fibre. |
| B. | The neural signal generates an action potential which causes the release of \(Ca^{++}\) into sarcoplasm. |
| C. | Increase in \(Ca^{++}\) inactivates the actin for breaking cross bridges. |
| D. | Actin binds to the myosin head to form a cross bridge. |
| E. | Shortening of sarcomere takes place by pulling actin filaments towards the centre of 'A' band. |
| 1. | A, B only | 2. | C and E only |
| 3. | C and D only | 4. | A,B, D and E only |
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Choose the correct statement regarding GIFT to overcome infertility.
| 1. | Ova collected from a female donor are transferred to the uterus of an infertile female. |
| 2. | Early embryos with up to 8 blastomeres are transferred into the fallopian tube of an infertile female. |
| 3. | Early embryos with to 8 blastomeres are transferred to the uterus of an infertile female. |
| 4. | It is the transfer of an ovum collected from a donor into the fallopian tube of another female who cannot produce ovum but can provide suitable environment for fertilization and development. |
Level 4: Below 35%
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Which of the following statements are correct with reference to human endoskeleton?
Choose the correct answer from the options given below :
1. C, D and E only
2. B, C and E only
3. A, B and D only
4. B and E only
| A. | Human skull is monocondylic. |
| B. | The joint between any two adjoining vertebrae is a cartilaginous joint. |
| C. | In human beings, the number of cervical vertebrae is seven. |
| D. | All ribs except the last 2 pairs are bicephalic. |
| E. | The occipital bone of skull is articulated with atlas vertebra. |
Choose the correct answer from the options given below :
1. C, D and E only
2. B, C and E only
3. A, B and D only
4. B and E only
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| 1. | Spermatogonia always undergo meiotic cell division |
| 2. | Primary Spermatogonia divide mitotically to produce secondary Spermatocytes. |
| 3. | Secondary Spermatocytes, through their second meiotic division, produce haploid spermatids |
| 4. | Spermatids produce spermatozoa through mitosis. |
| 5. | Spermatids transform into spermatozoa by spermiogenesis. |
Choose the correct answer from the options given below:
| 1. | A, C and E only |
| 2. | C and E only |
| 3. | A and E only |
| 4. | B, C and D only |
Level 4: Below 35%
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Select the incorrect statements with reference to Rh grouping.
Choose the answer from the options given below:
1. A and B only
2. C and D only
3. A and E only
4. B and C only
| A. | Erythroblastosis foetalis is a condition observed having foetus with \(RH^{-ve}\) blood and mother with \(RH^{-ve}\) blood. |
| B. | Rh antigen is observed on RBCs in the majority of human beings. |
| C. | Before blood transfusion, Rh group should also be matched. |
| D. | Rh incompatibility is observed when a pregnant mother is \(RH^{-ve}\) and the foetus is \(RH^{-ve}\) |
| E. | Erythroblastosis foetalis can be avoided by administering anti-Rh antibodies to the mother immediately after the delivery of the second child. |
Choose the answer from the options given below:
1. A and B only
2. C and D only
3. A and E only
4. B and C only
Level 4: Below 35%
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Select the set of fishes which belong to the class Osteichthyes :
| 1. | Saw fish, Fighting fish and Dog fish |
| 2. | Devil fish, Cuttlefish and Hagfish |
| 3. | Starfish, Hagfish and Cuttlefish |
| 4. | Flying fish, Angel fish and Fighting fish |
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In a population of a grasshopper species, the chromosome number of some members is 23 and some other members possess 24 chromosomes. The 23 and 24 chromosome-bearing members in this species are __________.
1. females and males, respectively
2. males and females, respectively
3. all males
4. all females
1. females and males, respectively
2. males and females, respectively
3. all males
4. all females
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Evolution of human appears parallel to the progressive development of brain and language skills. As such, the evolution of individual species in the sequence of their appearance is:
| 1. | Ramapithecus → Homo habilis → Homo erectus → Neanderthal → Homo sapiens |
| 2. | Neanderthal → Ramapithecus → Homo habilis → Homo erectus → Homo sapiens |
| 3. | Homo habilis → Homo erectus → Ramapithecus → Neanderthal → Homo sapiens |
| 4. | Homo sapiens → Ramapithecus → Homo habilis → Neanderthal → Homo erectus |
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The specific receptors for neurotransmitters in a synapse are present on __________.
| 1. | Pre-synaptic membrane |
| 2. | Post-synaptic membrane |
| 3. | Myelin sheath |
| 4. | Schwann cell |
Level 4: Below 35%
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Match List I with List II :
Choose the correct answer form the options given below:
| List I | List II | ||
| List I (Respiratory Volume) | List II (Capacity in mL) | ||
| 1 | ERV (Expiratory Reserve Volume) | I | 2500 – 3000 mL |
| 2 | RV (Residual Volume) | II | 500 mL |
| 3 | IRV (Inspirational Reserve Volume) | III | 1000 – 1100 mL |
| 4 | TV (Tidal Volume) | IV | 1100 – 1200 mL |
Choose the correct answer form the options given below:
| 1 | A-III,B-IV,C-I,D-II |
| 2 | A-III,B-I,C-IV,D-II |
| 3 | A-I,B-II,C-III,D-IV |
| 4 | A-I,B-III,C-II,D-IV |
Level 4: Below 35%
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