Biology MCQs

1496 MCQs  — Everyday Science MCQs  (Page 145 of 150)

Plasmids are used as cloning vectors for which of the following reasons?
A. Can be multiplied in culture
B. Self-replication in bacterial cells
C. Can be multiplied in laboratories with the help of enzymes
D. Replicate freely outside bacterial cells
The first clinical application of gene therapy over a 4 year old girl was for_________?
A. Adenosine deaminase deficiency
B. Adenosine deficiency
C. Growth deficiency
D. Adenine deficiency
RNA interference helps in__________?
A. Cell proliferation
B. Micropropagation
C. Cell defence
D. Cell differentiation
Which of the following is the quality of improved transgenic basmati rice?
A. Gives high yield but no characteristic aroma
B. Gives high yield and is rich in vitamin a
C. Does not require chemical fertilizers and growth hormones
D. Resistant to insects and diseases
The DNA fragments have sticky ends due to___________?
A. Endonuclease
B. Unpaired bases
C. Calcium ions
D. Free methylation
ELISA is _________?
A. Using radiolabelled second antibody
B. Usage of rbcs
C. Using complement-mediated cell lysis
D. Addition of substrate that is converted into a coloured end product