Q. A mutation in a gene that codes for a polypeptide results in a variant polypeptide that lacks the last three amino acids. What type of mutation is this? (A) Synonymous mutation (B) Nonsense mutation (C) Missense mutation (D) Silent mutation Ans: Nonsense mutation Solution: A nonsense mutation is a type of mutation in which […]
Q. Which one of the following is NOT a part of the human nonspecific defense system? (A) Interferon (B) Mucous (C) Saliva (D) Antibody Ans: Antibody Solution: Antibody is NOT a part of the human nonspecific defense system. Antibodies are a component of the adaptive immune system, which is a specific defense system that targets
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Q. Which one of the following techniques can be used to compare the expression of a large number of genes in two biological samples in a single experiment? (A) Polymerase chain reaction (B) DNA microarray (C) Northern hybridization (D) Southern hybridization Ans: DNA microarray Solution: (B) DNA microarray DNA microarray is the technique that can
Q. DNA synthesis in eukaryotes occurs during which phase of the mitotic cell cycle? (A) M (B) G1 (C) S (D) G0 Ans: S Solution: (C) S DNA synthesis in eukaryotes occurs during the S phase of the mitotic cell cycle. The cell cycle consists of several phases, including G1 (Gap 1), S (Synthesis), G2
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Q. Which one of the following enzymes is encoded by human immunodeficiency virus (HIV) genome? (A) Reverse transcriptase (B) Phospholipase (C) Phosphatase (D) ATP synthase Ans: Reverse transcriptase Solution: Human Immunodeficiency Virus (HIV) encodes the enzyme Reverse Transcriptase. Reverse transcriptase is a crucial enzyme used by HIV to convert its single-stranded RNA genome into double-stranded
Q. Which one of the following is a database of protein sequence motifs? (A) PROSITE (B) TrEMBL (C) SWISSPROT (D) PDB Ans: PROSITE Solution: PROSITE is a database of protein sequence motifs. It is a resource used for the identification and classification of conserved protein domains, motifs, and functional sites in proteins. PROSITE entries are
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Q. Which one of the following is used as a pH indicator in animal cell culture medium? (A) Acridine orange (B) Phenol red (C) Bromophenol blue (D) Coomassie blue Ans: Phenol red
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Q. A simple truss is shown in the figure below. The truss is loaded with horizontal and vertical force 15 kN and 25 kN, respectively. The force in the member AB will be________kN. A. 10 B. 20 C. 30 D. 40 Ans: 20
Q. An industrial building contains 3000 kg of combustible materials, in dry state, distributed over three rooms of area 100 m2, 500 m2 and 300 m2 each, in a proportion of 30%, 50% and 20% of the contents, respectively. Calorific value of the material is 4400 kCal/kg. The Total Fire Load of the rooms is
Q. The stack pressure is created by 10 m height of stack and 15°C temperature difference. Themotive force due to the stack pressure over a cross section area of 2.5 m2 is________N. Ans: 15.75 Solution: Stack effect or chimney effect is the movement of air into and out of buildings, chimneys, fluegas stacks, etc, resulting
