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1
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In absence of fertilization, corpus luteum degenerates into ........
Answer: corpus albicans
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2
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Histones are rich in
Answer: Lysine and Arginine
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3
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During replication of DNA, the separated strands are prevented from recoiling by using …..
Answer: single strand binding protein
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4
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While playing cricket Raju faces a problem of severe pain and heaviness in the-chest. Pain spreads from neck, lower jaw, left arm and to left shoulder. From above symptoms identify disease:
Answer: Angina pectoris
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5
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—-----Layer is in close contact with CNS in human beings.
Answer: Dura Matter
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6
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Annealing step of PCR, operates at .......с.
Answer: 40-60
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7
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Which of the following is the only gaseous plant growth regulator?
Answer: Ethylene
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8
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What happens in In Hamburger's phenomenon
Answer: CI- diffuse into RBCs
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9
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What are vestigeal organs?
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10
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Distinguish between heterochromatin and euchromatin with reference to staining property and activity.
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11
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Differentiate between X-chromosome and Y-chromosome.
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12
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Draw a suitable diagram of replication of eukaryotic DNA and label any three parts.
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13
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Draw a neat and proportionate diagram of root hair and label mitochondria, nucleus and vacuole.
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14
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Distinguish between human sperm and ovum.
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15
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Distinguish between artery and vein.
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16
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What is blood pressure? add a note on factors affecting it.
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17
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With the help of neat, labelled diagram describe the human female reproductive system.
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18
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Identify chromosomal disorder caused due to non-disjunction of 21st number of chromosomes and enlist its symptoms.
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19
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Describe the steps of PCR.
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20
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Explain cardiac cycle.
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21
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Draw a neat diagram of the conducting system of the human heart and label AV node, Bundle of His and Purkinje fibres.
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22
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What is Reproductive Isolation? Describe its any two types
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23
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Explain homologous and analogous organs.
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24
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Draw a Diagram of Root Hair, Neucleus, and Mitochondria
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