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Distinguish between photosynthesis and aerobic respiration.
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As the base sequence present on one strand of DNA decides the base sequence of other strands; this strand is considered as ______.
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Dead and dried cell mass of microbes having nutritive value is also known as -----------
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What is ‘jumping genes’?
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The nervous system of mammals uses both electrical and chemical means to send signals via neurons. Which part of the neuron receives impulse?
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___________ is a neurotransmitter.
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The supporting cells that produce myelin sheath in the PNS are _________.
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Receptors for protein hormones are located ________.
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Match the organism with the type of nervous system found in them.
| 1. Neurons | a. Earthworm |
| 2. Ladder-type | b. Hydra |
| 3. Ganglion | c. Flatworm |
| 4. Nerve net | d. Human |
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Short answer question
List the properties of the nerve fibres.
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Answer the following.
Complete the table.
| Location | Cell Type | Function |
| PNS | ___________ | Produce myelin sheath |
| PNS | Satellite cells | _____________ |
| ___________ | Oligodendrocytes | Form myelin sheath around central axon |
| CNS | ___________ | Phagocytose pathogens |
| CNS | ___________ | Form the epithelial lining of brain cavities and central canal. |
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Long answer question
Draw the neat labelled diagram of Multipolar Neuron.
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What is the function of an RNA primer during protein synthesis?
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Which enzyme does remove supercoils from replicating DNA?
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Very Short Answer Question:
Why are Okazaki fragments formed on lagging strand only?
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Very Short Answer Question:
When does DNA replication takes place?
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Recombinant protein .................. is used to dissolve blood clots present in the body.
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Give the role of Ca++ ions in the transfer of the recombinant vector into the bacterial host cells.
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Long Answer Question:
Explain the process of DNA replication.
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