Recent questions and answers in Biology

by Huzaifa Noori in Molecular Basis of Inheritance answered Apr 13 403 views

E. coli has only 4.6 × 10^6 base pairs and completes the process of replication within 38 minutes; then the average rate

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by Huzaifa Noori in Cell - The Unit of Life answered Mar 19 43 views

Microtubules are the constituents of

Microtubules are the constituents of (a) centrioles, spindle fibres and chromatin (b) centrosome, nucleosome and centrioles (c) cilia, flagella and peroxisomes (d) spindle fibres, centrioles and cilia.

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by Huzaifa Noori in Cell - The Unit of Life answered Mar 19 25 views

Mitochondria and chloroplast are (A) semiautonomous organelles (B) formed by division of preexisting organelles

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by Huzaifa Noori in Cell - The Unit of Life answered Mar 19 23 views

Which of the following cell organelles is responsible for extracting energy from carbohydrates to form ATP ?

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by Huzaifa Noori in Cell - The Unit of Life answered Mar 19 33 views

Which one of the following cell organelles is enclosed by a single membrane ?

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by Huzaifa Noori in Cell - The Unit of Life answered Mar 19 36 views

Which of the following structures is not found in a prokaryotic cell ?

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by Huzaifa Noori in Cell - The Unit of Life answered Mar 19 37 views

Which is the important site of formation of glycoproteins and glycolipids in eukaryotic cells?

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by Huzaifa Noori in Cell - The Unit of Life answered Mar 19 29 views

The Golgi complex participates in :

The Golgi complex participates in : (1) Respiration in bacteria (2) Formation of secretory vesicles (3) Fatty acid breakdown (4) Activation of amino acid

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by Huzaifa Noori in Photosynthesis in Higher Plants answered Mar 15 32 views

Which of the following is not a product of light reaction of photosynthesis?

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by Huzaifa Noori in Molecular Basis of Inheritance answered Mar 15 127 views

Name the enzyme that facilitates opening of DNA helix during transcription : (1) DNA helix (2) DNA helicase

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by Huzaifa Noori in Cell Cycle and Cell Division answered Mar 14 27 views

Match the stages of meiosis in column I to their characteristic features in column II and select the correct option

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by Huzaifa Noori in Cell Cycle and Cell Division answered Mar 14 28 views

Arrange the following events of meiosis in correct sequence (i) Crossing over (ii) Synapsis

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by Huzaifa Noori in Cell Cycle and Cell Division answered Mar 14 24 views

Which of the following options gives the correct sequence of events during mitosis ?

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by Huzaifa Noori in Cell Cycle and Cell Division answered Mar 14 23 views

Which of the following is not a characteristic feature during mitosis in somatic cells ?

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by Huzaifa Noori in Cell Cycle and Cell Division answered Mar 14 21 views

Which of the following is true for nucleolus ?

Which of the following is true for nucleolus? (1) It takes part in spindle formation. (2) It is a membrane-bound structure. (3) Larger nucleoli are present in dividing cells. (4) It is a site for active ribosomal RNA synthesis.

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by Huzaifa Noori in Biotechnology and its Application answered Mar 14 24 views

In India, the organisation responsible for assessing the safety of introducing genetically modified organisms for public

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by Huzaifa Noori in Biomolecules answered Mar 12 63 views

Which of the following statements is correct with reference to enzymes ?

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by Huzaifa Noori in Photosynthesis in Higher Plants answered Mar 12 22 views

With reference to factors affecting the rate of photosynthesis, which of the following statements is not correct?

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by Huzaifa Noori in Human Health and Diseases answered Mar 12 26 views

Identify the wrong statement with reference to immunity : (1) When exposed to antigen (living or dead) antibodies are

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by Huzaifa Noori in Cell Cycle and Cell Division answered Mar 12 42 views

Identify the correct statement with regard to G^1 phase (Gap 1) of interphase :

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by Huzaifa Noori in Cell Cycle and Cell Division answered Mar 12 45 views

Some dividing cells exit the cell cycle and enter vegetative inactive stage. This is called quiescent stage (G^°).

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by Huzaifa Noori in Cell Cycle and Cell Division answered Mar 12 21 views

The stage during which separation of the paired homologous chromosomes begins is :

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by Huzaifa Noori in The Living World answered Mar 9 35 views

A taxon is...

A taxon is (a) a group of related families (b) a group of related species (c) a type of living organisms (d) a taxonomic group of any ranking.

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by Huzaifa Noori in The Living World answered Mar 9 30 views

The term “New Systematics” was introduced by

The term “New Systematics” was introduced by (a) Bentham and Hooker (b) Linnaeus (c) Julian Huxley (d) A.P. de Candolle.

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by Huzaifa Noori in Biological Classification answered Mar 9 36 views

Chrysophytes, Euglenoids, Dinoflagellates and Slime moulds are included in the Kingdom

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by Huzaifa Noori in Biological Classification answered Mar 9 24 views

Which one is a wrong statement?

Which one is a wrong statement? (a) Haploid endosperm is typical feature of Gymnosperms. (b) Brown algae have chlorophyll a and c and fucoxanthin. (c) Archegonia are found in Bryophyta, Pteridophyta and Gymnosperms. (d) Mucor has biflagellate zoospores.

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by Huzaifa Noori in Biological Classification answered Mar 9 17 views

The structures that help some bacteria to attach to rocks and/or host tissues are

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