Shortcut Methods
JEE Main & Advanced
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Cell Size:
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Remember the size ranges for prokaryotic and eukaryotic cells and know that surface area-to-volume ratio increases as cell size decreases.
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Human Cell Chromosomes and Genes:
- Memorize the number of chromosomes (46) and the approximate number of genes (20,000-25,000) in a human cell.
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Cell Composition:
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Know that cells are mostly composed of water (approximately 70-80%) and have a slightly alkaline pH of around 7.2.
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Ion Concentrations:
- Remember the approximate concentrations of sodium and potassium ions in the cytosol (10 mM and 140 mM, respectively).
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Diffusion and Transport Rates:
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Understand the difference between diffusion and active transport and know the approximate rates at which small molecules move across the cell membrane.
CBSE Board Exams:
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Cell Structure and Functions:
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Review the key differences between prokaryotic and eukaryotic cells, as well as the structure and functions of the cell membrane, nucleus, cytoplasm, mitochondria, and chloroplasts.
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Photosynthesis and Cellular Respiration:
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Know the basic steps of photosynthesis and cellular respiration, including the reactants and products involved.
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Cell Division:
- Understand the processes of mitosis (cell division for growth and repair) and meiosis (cell division for sexual reproduction) and be able to describe the key stages and significance of each process.
