Recent questions in 2021

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Read the following statements. (a) Metagenesis is observed in Helminths.

asked Nov 9, 2021 in 2021 by Doubtly (98.9k points)

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1 answer 137 views

The partial pressures (in mm Hg) of oxygen (O2) and carbon dioxide (CO2) at alveoli (the site of diffusion) are

asked Nov 9, 2021 in 2021 by Doubtly (98.9k points)

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If adenine makes 30% of the DNA molecule, what will be the percentage of Thymine, Guanine and Cytosine in it? (1) T : 20 ; G 25 : 25 ; C : 25

asked Nov 9, 2021 in 2021 by Doubtly (98.9k points)

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1 answer 136 views

Which stage of meiotic prophase shows terminalisation of chiasmata as its distinctive feature? (1) Pachytene (2) Leptotene (3) Zygotene (4) Diakinesis

asked Nov 9, 2021 in 2021 by Doubtly (98.9k points)

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Match the following: (a) Physalia (i) Pearl oyster

asked Nov 9, 2021 in 2021 by Doubtly (98.9k points)

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1 answer 92 views

Select the favourable conditions required for the formation of oxyhaemoglobin at the alveoli. (1) Low pO2, low pCO2, more H+ , higher temperature

asked Nov 9, 2021 in 2021 by Doubtly (98.9k points)

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1 answer 151 views

The fruit fly has 8 chromosomes (2n) in each cell. During interphase of Mitosis if the number

asked Nov 9, 2021 in 2021 by Doubtly (98.9k points)

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1 answer 167 views

Match List – I with List - II List I List-II (a) Aspergillus niger (i) Acetic Acid (b) Acetobacter aceti (ii) Lactic Acid

asked Nov 9, 2021 in 2021 by Doubtly (98.9k points)

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1 answer 170 views

Select the correct pair a) Cells of medullary rays that form part of combiai ring- interfascicular cambium

asked Nov 9, 2021 in 2021 by Doubtly (98.9k points)

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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

asked Nov 8, 2021 in 2021 by Doubtly (98.9k points)

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1 answer 104 views

Receptors for sperm binding in mammals are present on: (1) Zona pellucida (2) Corona radiata (3) Vitelline membrane (4) Perivitelline space

asked Nov 8, 2021 in 2021 by Doubtly (98.9k points)

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Succus entericus is referred to as : (1) Chyme (2) Pancreatic juice (3) Intestinal juice (4) Gastric juice

asked Nov 8, 2021 in 2021 by Doubtly (98.9k points)

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1 answer 456 views

Identify the correct statement. (1) Split gene arrangement is characteristic of prokaryotes. (2) In capping,methyl guanosine

asked Nov 8, 2021 in 2021 by Doubtly (98.9k points)

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1 answer 136 views

Plasmid pBR322 has PstI restriction enzyme site within gene amp R that confers ampicillin resistance.

asked Nov 8, 2021 in 2021 by Doubtly (98.9k points)

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Which of the following statements is incorrect ? (1) Oxidation-reduction reactions produce proton gradient in respiration.

asked Nov 8, 2021 in 2021 by Doubtly (98.9k points)

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1 answer 98 views

DNA fingerprinting involves identifying differences in some specific regions in DNA sequence, called as: (1) Polymorphic DNA (2) Satellite DNA

asked Nov 8, 2021 in 2021 by Doubtly (98.9k points)

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1 answer 110 views

Now a days it is possible to detect the mutated gene causing cancer by allowing radioactive probe to hybridise its complimentary DNA

asked Nov 8, 2021 in 2021 by Doubtly (98.9k points)

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1 answer 134 views

Which of the following statements is incorrect ? (1) Cyclic photophosphorylation involves both PSI and PSII. (2) Both ATP and NADPH+H+

asked Nov 8, 2021 in 2021 by Doubtly (98.9k points)

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1 answer 122 views

What is the role of RNA polymerase III in the Process of transcription in eukaryotes ? (1) Transcribes only snRNAs

asked Nov 8, 2021 in 2021 by Doubtly (98.9k points)

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1 answer 98 views

In some members of Which of the following pairs of families, pollen grains retain their viability for months after release

asked Nov 8, 2021 in 2021 by Doubtly (98.9k points)

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