Cell biology questions.

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#	Question
1	Describe the significance of photosynthesis in cell evolution. Long answers
2	Describe the structure of smooth endoplasmic reticulum and state its functions. Long answers
3	Point out the checkpoints found in G2 phase of cell cycle and state the fate of a cell that no longer respond to cell cycle controls. Short answers
4	List five hydrophobic molecules and describe briefly how these molecules enter a cell to achieve signaling. Short answers
5	Explain briefly the events that take place in a cell to make a newly synthesized protein acquire a functional structure. Short answers
6	Describe the structure and functions of a centriole. Long answers
7	In table form , point out three differences for each of the following Euchromatin and heterochromatin Lysosome and peroxisome Apoptosis and necrosis Short answers
8	In pre-biotic time , the surface of the earth Was molten Had violent volcanic eruptions Had lightening Had little rains True OR False
9	Importance of photosynthesis in cell evolution include; Release of bound oxygen at day time Release of carbondioxide at night Harness oxygen to synthesize food Evolution of oxidative phospholyration True OR False
10	Ribosomes are Basophilic Small cytoplasmic granules Synthesize protein for extracellular use mRNA runs over the two subunits during protein synthesis True OR False

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