NEET Biology Practice Questions - Set 9

81. DNA fragments are:

A. Positively charged B. Negatively charged C. Neutral D. Either positively or negatively charged depending on their size

82. A foreign DNA and plasmid cut by the same restriction endonuclease can be joined to form a recombinant plasmid using:

A. EcoRI B. Taq polymerase C. Polymerase III D. DNA ligase

83. Which of the following is not a component of downstream processing?

A. Separation B. Purification C. Preservation D. Expression

84. The correct order of steps in Polymerase Chain Reaction (PCR) is:

A. Extension, Denaturation, Annealing B. Annealing, Extension, Denaturation C. Denaturation, Extension, Annealing D. Denaturation, Annealing, Extension

85. What is the criterion for DNA fragments movement on agarose gel during gel electrophoresis?

A. The larger the fragment size, the farther it moves B. The smaller the fragment size, the farther it moves C. Positively charged fragments move to farther end D. Negatively charged fragments do not move

86. Which part of the tobacco plant is infected by Meloidogyne incognita?

A. Stem B. Root C. Flower D. Leaf

87. Golden rice is a transgenic variety of rice which is rich in:

A. Vitamin A B. Vitamin B12 C. Vitamin C D. Iron

88. The first human hormone produced by recombinant DNA technology is:

A. Estrogen B. Progesterone C. Insulin D. Thyroxin

89. In gene therapy, which of the following is used to treat Adenosine Deaminase (ADA) deficiency?

A. RBCs from the patient B. Lymphocytes from the patient C. Liver cells from the patient D. Kidney cells from the patient

90. Bt toxin kills insects by:

A. Inhibiting protein synthesis B. Creating pores in the midgut epithelial cells C. Blocking the nervous system D. Destroying the respiratory system

NEET Biology Practice Questions (81-90)