List of top Life Science Questions

Which one of the following is not a tetrapods character?
Which of the following are autosomal recessive genetic disorder?
A. Huntington disease
B. Sickle cell anemia
C. Lesch-Nyhan syndrome
D. Tay-Sachs disease
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Agar is used for preparing solid media for culture. Which of the following is not true about agar media?
Match LIST-I with LIST-II
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Which one of the following proteins is often referred to as "the guardian of the genome"?
Which one of the following granulocyte has following features?
Highly phagocytic; nucleus with three to five lobes; primary and secondary granules; limited life span:
Which one of the following groups of animal is devoid of gill slits?
Colibactin is a DNA-damaging compound and when taken up by human intestinal cells, colibactin result in double stranded DNA break and can cause human colorectal cancers. It is synthesized by:
More recently discovered plant hormone, Jasmonates, play an important role both in plant defense and development, is derived from which fatty acid?
Which one of the following amino acids is involved in synthesis of hormone epinephrine in humans?
Plants can assimilate only two inorganic forms of nitrogen. These are:
A. Nitrite (NO\(_2^-\))
B. Ammonium (NH\(_4^+\))
C. Nitric acid (HNO\(_3\))
D. Nitrate (NO\(_3^-\))
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The membrane potential of a resting neuron is:
Lenticels permit the:
In homosporous pteridophyte species, the development of gametophyte is
The symmetry in which a flower can be divided into two equal and similar halves by only one vertical division is
Which of the given factors can affect frequency in Mendelian population?
A. Migration
B. Mutation
C. Selection
D. Random shift
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In general F\(_2\), F\(_3\) and the subsequent generations do not show segregation for a cytoplasmically inherited trait. This is because
Among the following species of bryophytes, which is not an example of mosses?
Who among the following is known as the father of Indian paleobotany?
In 1963, several varieties such as Sonalika and Kalyan Sona were introduced all over the wheat-growing belt in India. They were
Match LIST-I with LIST-II
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Choose the correct order of steps involved in nucleotide excision repair of damaged bases as their occur.
A. A fresh burst of DNA synthesis
B. Cuts are made on both the 3' side and the 5' side of the damaged area
C. The DNA is unwound producing a "bubble".
D. A DNA ligase covalent binds the fresh piece into the backbone.
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Choose the correct sequence of different regions on a typical eukaryotic DNA segment when we go from the upstream to the downstream of a transcription start point.
A. Initiation site
B. CAAT box
C. Enhancer
D. TATA box
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Match the LIST-I with LIST-II
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Which one of the following acid is hydrophobic with non polar side chain?