1. Embryonic stem cells are derived from: (A) fertilized embryo (B) unfertilized embryo (C) sperm (D) kidney
1. Embryonic stem cells are derived from: (A) fertilized embryo (B) unfertilized embryo (C) sperm (D) kidney

1. Embryonic stem cells are derived from: (A) fertilized embryo (B) unfertilized embryo (C) sperm (D) kidney
20. Gas vacuoles are present in: (A) Anabaena flos-aquae (B) Bacillus subtilis (C) Acanthurus nigrofuscus (D) Mycobacterium tuberculosis
2. Members of the antibody protein family that have common structural features are collectively known as: (A) haptens (B) allergens (C) antigens (D) immunoglobulins
21. In the ABO blood group system, antigenic determinants are: (A) nucleic acid (B) carbohydrate (C) lipid (D) protein
3. Apoptosis is characterized by: (A) necrosis (B) programmed cell death (C) membrane leaky syndrome (D) cell cycle arrest process
22. The most widely used program for multiple sequence alignment is: (A) BLAST (B) FASTA (C) CLUSTAL (D) Chime
4. Yeast artificial chromosomes (YACs) are used for cloning: (A) large segments of DNA (B) mRNA (C) bacterial DNA (D) yeast DNA
5. The product commercially produced by animal cell culture is: (A) insulin (B) tissue plasminogen activator (C) interferon (D) hepatitis B vaccine
6. An alternative to glycolysis pathway is: (A) glyoxylate pathway (B) pentose phosphate pathway (C) citric acid cycle (D) gluconeogenesis
7. A cell in G₁ of interphase has 12 chromosomes. How many chromatids will be found per cell during metaphase II of meiosis? (A) 6 (B) 12 (C) 18 (D) 24