10. Who coined the term 'Protoplasm' for living matter of cell?
11. What is the network of membrane-bound channels present in cell cytoplasm called
12. Which organelle does lysosomes arise from?
Answers
Answer:
10. J.E Purkinje
11. Endoplasmic reticulum
12. Golgi apparatus
Answer:
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10.J. E. Purkinje in the year 1839 coined the term 'protoplasm' for the fluid substance of the cell.
11.The endoplasmic reticulum (ER) is a large network of membrane-bound tubes and sheets.The endoplasmic reticulum is a winding network of thin membranous sacs. They are continous in fashion. When cells are disrupted, the ER breaks up into small vesicles called microsomes. They are covered with several ribosomes. These are Polyribosomes which are an aggregation of several ribosomes held together by a string of mRNA. Ribosomes are sites for biological protein synthesis. The eukaryotic ribosomes are also known as 80S ribosomes, which is their sedimentation coefficients in Svedberg units, because they sediment more slowly than the prokaryotic ribosomes (70s unit).
12.lysosomes arises from golgi apratus, laysosomes are the main sites of digestion that is the break-down of structures. A lysosome is a type of membrane-bound organelle that is present in animal cells