02. Past Public Examination Questions for the cell as the Basic unit of life.pdf

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Past Public Examination Questions on the cell as the Basic unit of life (C.2) Convectional Questions 1. Read the passage below and answer the questions that follow. The Discovery of Cells Most cells are too small to be observed with the naked eye. Thus the existence of cells remained unnoticed until the 17 th century. In 1665, Robert Hooke studied a thin section of cork under his self-made compound microscope. He found that the cork was made up of many units which he named ‘cells’. According to his observation, a cell is an empty space bounded by a thick wall. At that time, Antonie van Leeuwenhock , using the single-lens microscope he made, discovered single-celled organisms. (a) Single-celled organisms can be classified into different kingdoms. Name two kingdoms that include single-celled organisms. (2 marks) (b) Later, scientists found that living cells are made up of many cellular structures. State two cellular structures present in all living cells. (2 marks) (c) The following table shows some steps of preparing a temporary slide of onion epidermis and the purpose behind each step. Complete the table. (2 marks) (HKCEE 2008) 2. What are the major components of the plasma membrane? State THREE functions of the plasma membrane in cell metabolism. (4 marks)
3. Outline the structural and functional relationship between rough endoplasmic reticulum and the Golgi apparatus. (4 marks)
4. By means of a labelled diagram of a generalized eukaryotic cell, show ONLY those organelles which are bounded by membranes and which are also associated with protein synthesis. (3 marks) (HKAL 1986) 5. Name all the cellular organelles which are surrounded by two layers of membrane. (3 marks)
Past Public Examination Questions for the cell as the Basic unit of life P. 1 / 3 6. Tabulate the major differences in cellular

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