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What outcome do you expect, if all the mitochondria are removed from a eukaryotic cell?
Mitochondria produce energy in the form of ATP through cellular respiration. If all mitochondria are removed, the cell will not be able to generate energy. As a result, essential processes like metabolism, transport and synthesis will stop. This will lead to cell death because the cell cannot survivRead more
Mitochondria produce energy in the form of ATP through cellular respiration. If all mitochondria are removed, the cell will not be able to generate energy. As a result, essential processes like metabolism, transport and synthesis will stop. This will lead to cell death because the cell cannot survive without energy.
For more NCERT Solutions of Class 9 Science Exploration Chapter 2 Cell: The Building Block of Life (2026-27)
https://www.tiwariacademy.com/ncert-solutions/class-9/science/exploration-chapter-2/
See lessWhich phenomenon inhibits the formation of tumors in the human body? Can plants also develop tumors? Explain.
Contact inhibition is the phenomenon that prevents tumor formation in humans by stopping cell division when cells touch each other. In cancer, this control is lost. Plants can also develop tumors, such as galls, due to uncontrolled growth. However, plant tumors usually remain localized and do not spRead more
Contact inhibition is the phenomenon that prevents tumor formation in humans by stopping cell division when cells touch each other. In cancer, this control is lost. Plants can also develop tumors, such as galls, due to uncontrolled growth. However, plant tumors usually remain localized and do not spread like malignant tumors in animals.
For more NCERT Solutions of Class 9 Science Exploration Chapter 2 Cell: The Building Block of Life (2026-27)
https://www.tiwariacademy.com/ncert-solutions/class-9/science/exploration-chapter-2/
See lessThe cell membrane of a cell is made up of proteins and lipids. Which cell organelles help in the synthesis of cell membrane? Write the path of these compounds from their site of synthesis to the cell membrane and show this through a labelled diagram.
Proteins are synthesised in ribosomes on rough endoplasmic reticulum, while lipids are made in smooth endoplasmic reticulum. These materials are transported to the Golgi apparatus, where they are modified and packed into vesicles. The vesicles move to the cell membrane and fuse with it, forming membRead more
Proteins are synthesised in ribosomes on rough endoplasmic reticulum, while lipids are made in smooth endoplasmic reticulum. These materials are transported to the Golgi apparatus, where they are modified and packed into vesicles. The vesicles move to the cell membrane and fuse with it, forming membrane components.
For more NCERT Solutions of Class 9 Science Exploration Chapter 2 Cell: The Building Block of Life (2026-27)
https://www.tiwariacademy.com/ncert-solutions/class-9/science/exploration-chapter-2/
See lessWhat would happen if gametes are formed by mitotic divisions?
If gametes are formed by mitosis, they will contain the full set of chromosomes instead of half. During fertilisation, the chromosome number would double, leading to abnormal cells. This would disrupt genetic balance and cause serious developmental problems. Meiosis is essential to maintain the corrRead more
If gametes are formed by mitosis, they will contain the full set of chromosomes instead of half. During fertilisation, the chromosome number would double, leading to abnormal cells. This would disrupt genetic balance and cause serious developmental problems. Meiosis is essential to maintain the correct chromosome number in sexually reproducing organisms.
For more NCERT Solutions of Class 9 Science Exploration Chapter 2 Cell: The Building Block of Life (2026-27)
https://www.tiwariacademy.com/ncert-solutions/class-9/science/exploration-chapter-2/
See lessIf a synthetic cell is developed, what may be the related ethical issues?
The development of synthetic cells raises ethical concerns such as biosafety, misuse and environmental risks. Artificial life forms may escape control and harm ecosystems. There are also concerns about playing with natural life processes and moral responsibility. Proper regulations, monitoring and eRead more
The development of synthetic cells raises ethical concerns such as biosafety, misuse and environmental risks. Artificial life forms may escape control and harm ecosystems. There are also concerns about playing with natural life processes and moral responsibility. Proper regulations, monitoring and ethical guidelines are necessary to ensure safe use and prevent misuse of synthetic cell technology.
For more NCERT Solutions of Class 9 Science Exploration Chapter 2 Cell: The Building Block of Life (2026-27)
https://www.tiwariacademy.com/ncert-solutions/class-9/science/exploration-chapter-2/
See less