BPK 105 Chapter Notes -Endoplasmic Reticulum, Nucleolus, Lysosome
27 Jul 2012
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Study questions chapter 3 : list and briefly describe the six main functions of the cell. (6 marks) Cell metabolism and energy use: the chemical reactions that occur within cells are collectively called cell metabolism, the energy is used for multiple functions. Synthesis of molecules: cells synthesize various types of molecules, proteins, lipids etc. Communication: produce and receive chemical and electrical signals. Reproduction and inheritance: each cell contains a copy of the genetic info of the indvidual: draw the cell illustrating the following organelles: nucleus, nucleolus, cytoplasm, rough. Endoplasmic reticulum, ribosome, secretory vesicle, lysosome, mitochondria, cell membrane and. Gogli apparatus. (5 marks: describe the functions of each of the following organelles: nucleus, nucleolus, cytoplasm, rough. Nucleus: organelle containing the most genetic material of the cell. Nucleolus: rounded, dense, well-defined nuclear body with no surrounding membrane; subunits of ribosomes are manufactured within the nucleolus. Rough endoplasmic reticulum: many ribosomes attach here, site of protein synthesis.
