Direction: Absence of cellulosic cell wall, high β-carotene content and GRAS status make Dunaliella salina a good model system for producing edible vaccines. 109 Cells of D. salina were electroporated with a high expression DNA vector containing an antigenic gene.
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If 103 cells survived after electroporation, how many cells were killed during this process (round of to the nearest number) ?
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- 109
- 108
- 106
- 105
Correct Option: A
Number of cell died = Total cell – Number of cell survived
= 109 – 103
= 9.9 × 108 = 109
