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Hassan
1. In the structural diagram of an antibody molecule which portion is occupied by variable chains?
A. Lower region
B. Upper region
C. Middle region
D. Lower region
2.DIASPORA
A. Gathering
B. Dispersion
C. Alliance
D. Gathering
3. Every molecule of NADH, fed into ETC produces: A) 2 ATP
A. 2 ATP
B. 3 ATP
C. 4 ATP
D. 2 ATP
4.IMPETUOUS
A. Honest
B. Impulsive
C. Lazy
D. Honest
5.VOCIFEROUS
A. Hidden
B. Loud
C. Strong
D. Hidden
6.Final acceptor of electrons in respiratory chain is:
A. Cytochrome a
B. Oxygen
C. Cytochrome a3
D. Cytochrome a
7.The end product of anaerobic respiration in humans and other mammals is
A. Pyruvic acid
B. Ethanol
C. Lactic acid
D. Pyruvic acid
8.TRANSIENT
A. Permanent
B. Temporary
C. Long
D. Permanent
9.A biochemical process which occurs within a cell to breakdown complex compounds to produce energy is called:
A. Respiration
B. Photosynthesis
C. Pyrrole
D. Respiration
10.PROWESS
A. Hindrance
B. Skill
C. Reservation
D. Hindrance
11. Which part of chlorophyll molecule absorbs light?
A. Phytol
B. Porphyrin ring
C. Pyrrole
D. Phytol
12.BEQUEATH
A. Grant
B. Imbibe
C. Irrigate
D. Grant
13.The DNA molecule formed from messenger-RNA by reverse transcriptase is called??
A. Complementary DNA
B. Recombinant DNA
C. Chimeric DNA
D. Complementary DNA
14.The agent which separates the two strands of DNA in PCR is??
A. DNA ligase
B. Primer
C. Heat
D. DNA ligase
15.Cystic fibrosis patient lack a gene that codes for trans-membrane carrier of??
A. Na+ ions
B. Cl― ions
C. Ca++ ions
D. Na+ ions
16.The phage commonly used as a vector in genetic engineering is?
A. Lambda phage
B. Gamma phage
C. T2 phage
D. Lambda phage
17.Restriction endonucleases are naturally occurring enzymes of:
A. Viruses
B. Bacteria
C. Fungi
D. Viruses
18.In an ecosystem mycorrhizae are an example of:
A. Predation
B. Symbiosis
C. Mutualism
D. Predation
19.As a result of destruction of ozone layer there is significant increase in:
A. Ultra-violet radiations
B. Greenhouse gases
C. Nitrogen oxide
D. Ultra-violet radiations
20.Higher rate of a biological activity in a nutrient rich pond water is called:
A. Water pollution
B. Air pollution
C. Eutrophication
D. Water pollution
21.The use of living organisms in industry for the production of useful products is known as
A. Parasitology
B. Biochemistry
C. Biotechnology
D. Parasitology
22.Living part of ecosystem is:
A. lithosphere
B. Hydrosphere
C. Community
D. lithosphere
23.Plants having foreign DNA incorporated into their cells are called:
A. Clone plants
B. Transgenic plants
C. Parthenocarpic plants
D. Clone plants
24. A living association between two living organisms of different species which is beneficial to both the partners is called:
A. Commensalism
B. Parasitism
C. Mutualism
D. Commensalism
25.Treatment by using attenuated culture of bacteria is called
A. Chemotherapy
B. Sterilization
C. Antisepsis
D. Chemotherapy
26. The structures which are reduced during the course of evolution and have no apparent function are called:
A. Regenerated organs
B. Vestigial organs
C. Saltatory organs
D. Regenerated organs
27.The major cause of hepatitis B is
A. Blood transfusion
B. Blood clotting
C. Absence of fibrinogen
D. Blood transfusion
28.When a gene suppresses the effect of another gene at another locus the phenomenon is termed as:
A. Over dominance
B. Pleiotropy
C. Epistasis
D. Over dominance
29.During animal cell division, the spindle fibres are formed from
A. Mitochondria
B. Centrioles
C. Ribosomes
D. Mitochondria
30.Phenylketonuria is an example of:
A. Polyploidy
B. Transmutation
C. Inversion
D. Polyploidy
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