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Home » General Knowledge » General Science » Aptitude Test - 2
1.Human population growth is greatest in developing countries because:
A. the birth rate is high in developing countries
B. the death rate is high in developing countries
C. much of the population has already reached the child bearing age.
D. the birth rate is high in developing countries
2.Which woody raw material is used for the manufacture of paper pulp?
A. Cotton
B. Poplar
C. Bagasse
D. Cotton
3. Rectified spirit contains alcohol about:
A. 80%
B. 95%
C. 70%
D. 80%
4.Which of the following elements is not present abundantly in earth’s crust:
A. Silicon
B. Radium
C. Aluminum
D. Silicon
5.The famous book; Al – Qanoun was written by the Muslim scientist:
A. Jabar bin Hayyan
B. Zakariya Al – Razi
C. Abu Ali Sina
D. Jabar bin Hayyan
6.Basic metals can be converted into gold by:
A. Heating
B. Beating
C. Artificial nuclear radioactivity
D. Heating
7.A light year is a unit of:
A. Time
B. Energy
C. Length
D. Time
8.One of the main function of the earth’s ozone layer is to:
A. Prevent global warming
B. Filter out ultraviolet rays
C. Absorb pollution
D. Prevent global warming
9. Insulin is injected into the intestines by
A. PancreasB. Liver
B. Stomach
C. Gall bladder
D. PancreasB. Liver
10.Lock Jaw, i.e., difficulty in opening the mouth is a symptom of
A. Cholera
B. Plague
C. TetanusD. Diphtheria
D. Cholera
11.What is the molecular weight of Glycine?
A. 75 g•mol−1
B. 80 g•mol−1
C. 90 g•mol−1
D. 75 g•mol−1
12. Which of the following is not an essential amino acid?
A. Proline
B. Histidine
C. Leucine
D. Proline
13.Histones are rich in__________
A. Lysine
B. Arginine
C. Histidine
D. Lysine
14.Which of the following amino acid is sweet in taste?
A. Glycine
B. Alanine
C. Glutamic acid
D. Glycine
15. Which of the following amino acid act as inhibitory neurotransmitter?
A. Glycine
B. Alanine
C. GABA
D. Glycine
16.The amino acid commonly used as an ingredient in the buffers of SDS PAGE
A. Aspartic acid
B. Glutamic acid
C. Glycine
D. Aspartic acid
17. Which of the following amino acid will be absent in α (alpha) helix structure of protein?
A. Proline
B. Glycine
C. Galine
D. Proline
18.Which amino acid act as the precursor of nucleotide biosynthesis?
A. Aspartate
B. Glycine
C. Glutamine
D. Aspartate
19.Which of the following amino acid act as excitatory neurotransmitter?
A. Glutamate
B. Aspartate
C. Cysteine
D. Glutamate
20. How many amino acid residues are there in per turn of α-helix?
A. 3.6
B. 4.6
C. 3.0
D. 3.6
21. How is the secondary structure of a protein stabilized?
A. Van der wall forces
B. Hydrogen bonding
C. Covalent bond
D. Van der wall forces
22. What is the maximum wavelength that Tryptophan and tyrosine absorb?
A. 280nm
B. 260nm
C. 257nm
D. 280nm
23. In which amino acid Imidazole group, an aromatic ring found?
A. Lysine
B. Arginine
C. Histidine
D. Lysine
24. Which of these are rare amino acid in a protein?
A. Leucine and serine
B. Lysine and glutamic acid
C. Tryptophan and methionine
D. Leucine and serine
25. The two amino acids having R groups with a negative net charge at pH 7.0 are
A. Aspartate and glutamate
B. Arginine and histidine
C. Cysteine and methionine
D. Aspartate and glutamate
26.Identify the amino acids containing nonpolar, aliphatic R groups
A. Phenylalanine, tyrosine, and tryptophan
B. Glycine, alanine, leucine
C. Lysine, arginine, histidine
D. Phenylalanine, tyrosine, and tryptophan
27. Among the 20 standard proteins coding amino acids, which one is least occurs in proteins?
A. Glycine
B. Alanine
C. Tryptophan
D. Glycine
28. Which of the following is an example for a bio-plastic?
A. Polyaspartate
B. Polyglutamate
C. Polyglutamate
D. Polyaspartate
29.Bacteria prefer to use the codon CGA instead of AGA to code for Arginine. This is an example for ____
A. Second genetic code
B. Nullomers
C. Transcriptional decoding
D. Second genetic code
30.Name the amino acid, which exists in two non-superimposable mirror images of each other.
A. Epimer
B. Anomer
C. Enantiomer
D. Epimer
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