Biology MCQS

681. In a human female, fertilization commonly occurs at______________?
(A) Proximal part of oviduct
B: Distal part of oviduct
C: Uterus
D: Cervix

682. The part of chloroplast where CO2 is fixed to manufacture sugar is__________?
A: Stroma
B: Grana
C: Thylakoid
(D: Outer membrane

683. Highest form of learning is__________________?
A: Latent learning
(B: Insight learning
C: Operant conditioning
D: Instinct

684. Which of the following hormones is polypeptide in nature____________?
A: Insulin
B: Thyroxine
C: ADH
(D: Cortisone

685. Smog is composed of?
(A) O3
(B) NO2
(C) PPN
(D) Both A & B

686. Deposition of CDNA into the inert structure is known as?
(A) DNA Probes
(B) DNA Polymerase
(C) DNA microarrays
D: DNA

687. The enlarged ripened ovary is called?
(A) Ovule
(B) Seed
(C) Fruit
D: Cotyledon

688. NADPH2 is produced by?
(A) Glycolysis
(B) Photosystem 1
C: Photosystem 2
D: Anaerobic Respiration

689. Name the cell line of human embryonic lung?
(A) TH1
B: WISH
C: L
(D) MRC-5

690. Interferon is made by?
(A) Lymphocytes
B: Lymphoblasts
C: Fibroblasts
D: All of the above