In a cross between a male and female, both heterozygous for sickle cell anaemia gene, what percentage of the progeny will be diseased?
a) 50% b) 75% c) 100% d) 25% Answer: d) 25%
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Which of the following RNAs is not required for the synthesis of protein?
a) siRNA b) tRNA c) rRNA d) mRNA Answer: a) siRNA
The centriole undergoes duplication during:
a) Prophase b) S-phase c) Metaphase d) G2 phase Answer: b) S-phase
Which one of the following is an example of Hormone releasing IUD?
a) CuT b) Cu 7 c) LNG 20 d) Multiload 375 Answer: c) LNG 20
Dobson units are used to measure thickness of:
a) CFCs b) Stratosphere c) Troposphere d) Ozone Answer: d) Ozone
Which of the following is not an objective of Biofortification in crops?
a) Improve protein content b) Improve vitamin content c) Improve resistance to diseases d) Improve micronutrient and mineral content Answer:... View Article
Which enzyme is responsible for the conversion of inactive fibrinogens to fibrinns?
a) Renin b) Thrombin c) Epinephrine d) Thrombokiase Answer: b) Thrombin
If Adenine makes 30% of the DNA molecule, what will be the percentage of Thymine, Guanine and Cytosine in it?
a) T : 20 ; G : 30 ; C : 20 b) T : 20 ; G : 20... View Article
Sphincter of oddi is present at:
a) Ileo-caecal junction b) Gastro-oesophageal junction c) Junction of hepato-pancreatic duct and duodenum d) Junction of jejunum and duodenum Answer:... View Article
Which one of the following organisms bears hollow and pneumatic long bones?
a) Macropus b) Neophron c) Ornithorhynchus d) Hemidactylus Answer: b) Neophron
Which is the “Only enzyme” that has “Capability” to catalyse Initiation, Elongation and Termination in the process of transcription in prokaryotes?
a) DNA dependent DNA polymerase b) DNA Ligase c) DNA dependent RNA polymerase d) DNase Answer: c) DNA dependent RNA... View Article
A specific recognition sequence identified by endonucleases to make cuts at specific within the DNA is:
a) Degenerate primer sequence b) Okazaki sequences c) Poly(A) tail sequences d) Palindromic Nucleotide sequences Answer: d) Palindromic Nucleotide sequences
With regard to insulin choose correct options.
a) C-peptide is not present in mature insulin. b) The insulin produced by rDNA technology has C-peptide. c) The pro-insulin... View Article
The organelles that are included in the endomembrane system are
a) Endoplasmic reticulum, Mitochondria, Ribosomes and Lysosomes b) Golgi complex, Mitochondria, Ribosomes and Lysosomes c) Endoplasmic reticulum, Golgi complex, Lysosomes... View Article
Veneral diseases can spread through
a) Using sterile needles b) Transfusion of blood from infected person c) Infected mother to foetus d) Kissing e) Inheritance... View Article
Which one of the following belongs to the family Muscidae?
a) House fly b) Grasshopper c) Cockroach d) Fire fly Answer: a) House fly
Receptors for sperm binding in mammals are present on
a) Zona pellucida b) Vitelline membrane c) Perivitelline space d) Corona radiata Answer: a) Zona pellucida
The fruit fly has 8 chromosomes (2n) in each cell. During interphase of Mitosis if the number of chromosomes at G1 phase is 8, what would be the number of chromosomes after S phase?
a) 4 b) 8 c) 32 d) 16 Answer: b) 8
Persons with ‘AB’ blood group are called as “Universal recipients”. This is due to :
a) Absence of antibodies, anti-A and anti-B, in plasma b) Absence of antigens A and B in plasma c) Presence... View Article
Chronic auto immune disorder affecting neuromuscular junction leading to fatigue, weakening and paralysis of skeletal muscle is called as:
a) Arthritis b) Muscular dystrophy c) Gout d) Myasthenia gravis Answer: d) Myasthenia gravis
