12th Class FSc Part 2 Biology Chapter Wise Online MCQ Test With Answer PDF

Biology FSC Part 2 Online MCQ's Test

Sr. #	Questions	Answers Choice
1	First essential phenomenon of meiosis i.e pairing of homologous Chromosomes called synapsis starts in	Leptotene Zygotene Pachytene Diplotene
2	The individuals have additional sex chromosome in	Klinefelter's syndrome Turner's syndrome Down's syndrome Sach's syndrome
3	G₁ is time between the end of mitosis and initiation of DNA synthesis also called as	Pre-DNA synthesis phase DNA synthesis phase Post-DNA synthesis phase None of these
4	Each bivalent has	Twochromatids Four chromatids Both a & b None of these
5	Downs syndrome (Mongolism) occurs in man during which 21^st chromosome falls to segregate resulting gamete with	20 chromosomes 21 chromosomes 22 chromosomes 24 chromosomes
6	Crossing over and random assortment of chromosomes are two significant happenings of	Mitosis Amitosis Meiosis All a,b,and c
7	The tumours which are of small size and localized are	Bengin Malignant Gentle Nasty
8	At cytokinesis in plants a membrane structure phragmoplast is formed from vesicles which originate from	Lysosomes Centrioles Golgi complex Glyoxisomes
9	A network of very fine threads called chromatin can be visualized in call during	Interphase Prophase Metaphase Anaphase
10	Origin site of replication is one in	Prokaryotes Eukaryotes None of these Both a & b
11	Okazaki fragments are about 1000 - 2000 nucleotides long in	Prokaryotes Eukaryotes Both a & b None of these
12	All the 64 codons were tested by	Marshall Nirenberg Philip Leader Har Gobind Khorana All a,b,and,c
13	In the double helix of DNA adenine forms two hydrogen bonds with	Thymine Guanine Cytosine Uracil
14	In prokaryote within promoter there are two binding sites TTGACA also called -35 sequence and TATAAT also called	-10 sequence - 20 sequence - 30 sequence - 35 sequence
15	In 1953 Watson and Crick proposed structure of the	RNA molecule ATP molecule DNA molecule NAD molecule
16	In 1944 Oswald Avery along with Colin Macleod and Maclyn McCarty repeated experiments of	Lamarck Griffith Darwin Spemann
17	Human cells have 46 chromosomes consisting of	20 pairs 21 pairs 22 pairs 23 pairs

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