Please select a subject first
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Initiation codon of protein synthesis in Eukaryotes is ______.
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Briefly describe the secretory phase of the menstrual cycle.
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What is the central dogma?
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What is the central dogma?
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Explain the mechanism of transcription in a prokaryotic cell.
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Explain the role of hormones during the menstrual cycle.
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Given below is the diagram depicting the menstrual cycle in human beings. Study it carefully and answer the questions that follow.
- Which phases are indicated by ‘C’ and ‘D’?
- Name the structures labelled ‘F’. What is its role?
- Explain the changes in the level of progesterone during phases ‘C’ and ‘D’.
- Which hormone present in the urine confirms pregnancy in human beings?
- Identify the structure labelled ‘E’. Name the hormone released by it.
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Give a reason for the following:
The second half of the menstrual cycle is called the luteal phase as well as the secretory phase.
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A substance that stimulates the production of antibodies is called ______.
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Briefly explain the role of the following in providing defence against infection in the human body:
B-cells
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Briefly explain the role of the following in providing defence against infection in the human body:
T-cells
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Observe the relation between the first two words and then fill in the fourth word.
Histamine: Mast cells :: Antibody: ______.
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Explain the process of sex determination in honey bees.
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The diagram given below shows the three types of endosperms in angiosperms.
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 |
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| Type 1 | Type 2 | Type 3 |
- Identify the three types of endosperms shown above.
- Name the type of endosperm which commonly occurs in polypetalous dicots.
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The number of chromosomes in the leaf cells of a male plant is 40 and in the stem cells of a female plant is 60. If they are artificially hybridised, what will be the number of chromosomes in the endosperm?
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An antiviral protein released from infected and dying cells is ______.
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Expand the following: SCID
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Name the antibody which is most effective in allergies.
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Give one significant difference between primary lymphoid organs and secondary lymphoid organs. Give one example of each.
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