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Answers
Answer:
1) J. E Purkinje - 1839
2) Mitochondria a d Plastids
3) Robert hook
4) When cell gets damaged lysosome may burst and the enzyme digest their own cell.Therefore lysosome known as suicidal bags.
5. a) Membrane biogenesis, the synthesis of specific molecular components and their assembly into cellular membranes, is a critical, major activity in which cells engage throughout their existence
b) Endoplasmic Reticulum
6. a) When dry apricots are left for sometime in pure water, they will swell. Because, water will enter into them through the process of osmosis. Later,when these apricots will be transferred to sugar solution, they will again shrink. This also occurs due to osmosis
b) RBC ( red blood cell) will shrink when kept in concentrated saline solution. ... This means that there will be flow of water from inside inside RBC to the outside in the saline water as through osmosis
c) If the plasma membrane ruptures or breakdown then the cell will not be able to exchange material from its surrounding by diffusion or osmosis. Thereafter the protoplasmic material will be disappeared and the cell will die
7) CO2 moves in and out of the cells by the process of diffusion which involves the movement of molecules from a region of higher concentration to a region of lower concentration across the cell membrane.
8) It has been likened to the cell's post office. A major function is the modifying, sorting and packaging of proteins for secretion. It is also involved in the transport of lipids around the cell, and the creation of lysosomes.
9) Meiosis is a process where a single cell divides twice to produce four cells containing half the original amount of genetic information. These cells are our sex cells – sperm in males, eggs in females.
10. a) Mitochondria - cellular respiration takes place in mitochondria
b) The folds of the inner membrane or the Cristae provide an increase in the Surface Area which gives the Mitochondrion more locations for ATP production to occur.
c) The taking in of matter by a living cell by invagination of its membrane to form a vacuole
Explanation:
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