Which of the following chemical is used in chemical transformation method?
A.
Cu
B.
FeSO4
C.
SO2
D.
CaCl2
Answer: Option D
Explanation:
In order to increase the competency of a bacterial cell, chemical transformation method is used. Use of calcium chloride (CaCl2) can precipitate the surface of the cell membrane and make it more competent.
Which of the following particles is used in the gene gun method?
A.
Iron particles
B.
Aluminum particles
C.
Silver particles
D.
Gold particles
Answer: Option D
Explanation:
Gene gun fires gold particles coated with the foreign DNA to the plant genome. Some of these particles pass through plant nucleus and integrate with the plant chromosome.