Recent questions and answers in Biology

the flat, disc shaped sacs of golgi bodies are called

answered Sep 26, 2019 by bestsantosh886

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Membrane and secretory proteins are sorted and packaged in which part of the cell before they are secreted ?

answered Sep 23, 2019 by s.8350994713

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The linking of antibiotic resistance gene with the plasmid vector became possible with :

answered Sep 15, 2019 by knightzack058

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the lysosomal enzymes are optimally active at

answered Aug 24, 2019 by ganamika9395

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Ascaris is characterized by :

answered Aug 17, 2019 by thukran2

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Which one of the following groups of three animals each is correctly matched with their one characteristics morphological feature ?

answered Jul 28, 2019 by amishap917

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Autonomously replicating circular extrachromosomal DNA is called a __

answered Jul 13, 2019 by varshneymuskan24

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Which one of the following is the correct matching of the site of action on the given substrate, the enzyme acting upon it and the end product ?

answered Jul 5, 2019 by manjunathavaishnavi

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Which enzyme is able to degrade cellulose that are absent in mammals but are produced by some bacteria, fungi and protozoa ?

answered Jun 24, 2019 by yesh.yesh0785

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Keeping in view the ' fluid mosaic model ' for the structure of cell membrane, which one of the following statement is correct with respect to the movement of lipids and proteins from one lipid monolayer to the other ( described as flip flop movement ) ?

answered Jun 17, 2019 by sajjadhussainrajper10

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During DNA replication in bacteria, the unwinding of the double helix (using ATP as energy source) is done by

answered Jun 12, 2019 by logu.thiru95

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Vacuole in a plant cell :

answered Jun 11, 2019 by nithishgaming

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What wil happen if the secretion of parietal cells of gastric glands is blocked with an inhibitor ?

answered Jun 4, 2019 by eshanidash80

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Which one of the following phyla is correctly matched with its two general characteristics ?

answered May 17, 2019 by pradeepmuhamma

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Which one of the following pairs of codons is correctly matched with their function or the signal for the particular amino acid ?

answered May 14, 2019 by biakdikiralte91

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Which of the following organisms is likely to have more concentration of DDT in its body?

answered May 2, 2019 by sukhachandiwala

2 answers

Match the following: 1. Chromoplasts----a. carbohydrates, 2. amyloplasts---b. oil and fat, 3. aleuroplasts---c. carotene , 4. elaioplasts---d.protein

answered May 1, 2019 by akashborthakur3

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The disorder, alkaptonuria is caused by the absence of which enzyme ?

answered May 1, 2019 by akashborthakur3

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In glycolysis, glucose is phosphorylated by ATP to form glucose 6-phosphate and ADP. This reaction is catalyzed by which enzyme ?

answered May 1, 2019 by akashborthakur3

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Which enzyme can be used in-vitro with an oligo(dT) primer to synthesize single-stranded cDNA from mRNA templates ?

answered Apr 22, 2019 by sagar.hagawane1

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Eukaryotic DNA replication is ________ in nature.

answered Apr 20, 2019 by vishupatil1211

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Regarding the fig. identify 1,2,3 and 4:

answered Apr 19, 2019 by sujitparidabiju000

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E. coli DNA polymerases II and III lack which activity ?

answered Apr 10, 2019 by navintelgote3112

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In eukaryotic cell, RNA is synthesized by how many RNA polymerases ?

answered Apr 2, 2019 by www.doddinavya

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During which process, the velocity of the DNA fragments decreases as their length increases and is proportional to electric field strength ?

answered Apr 1, 2019 by shreyaphalke11

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The treatment of bacteria with ice-cold solutions of CaCl2 and then heated to 37$^{\circ}$C or 42$^{\circ}$C is the process or method called as

answered Apr 1, 2019 by shreyaphalke11

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At the origin of replication, synthesis of plasmid DNA depends on the formation of which persistent complex?

answered Apr 1, 2019 by shreyaphalke11

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Plasmid pSC101 are said to replicate under -

answered Apr 1, 2019 by shreyaphalke11

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The attachment of an amino acid to a tRNA is catalyzed by which enzyme ?

answered Mar 30, 2019 by sunitasingh8239281320

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Each codon is recognized by a triplet of bases, called an anticodon which is present in _____.

answered Mar 30, 2019 by sunitasingh8239281320

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Histone proteins are _______ in nature.

answered Mar 30, 2019 by sunitasingh8239281320

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The second maturation division of the mammalian ovum occurs

answered Mar 30, 2019 by sunitasingh8239281320

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Most amino acids in proteins are specified by more than one codon. Therefore, genetic codon is said to be

answered Mar 25, 2019 by sidheshasuresh000

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A transgenic food crop which may help in solving the problem of night blindness in developing countries is :

answered Mar 21, 2019 by nehamokal294

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In tissue culture medium,the embryoids formed from pollen grains is due to

answered Mar 16, 2019 by ps1192802

2 answers

The rate limiting step of fatty acid synthesis is catalyzed by

answered Mar 14, 2019 by marinasahmed100

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Katal (kat) is the unit of

answered Mar 5, 2019 by mr.goswami07

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Bioassay of IAA is

answered Feb 25, 2019 by aparajita.dey2011

2 answers

Cornea transplant in humans is almost never rejected. This is because :

answered Feb 17, 2019 by siruluanaparthi2014

1 answer

Diacylglycerol activates which of the following enzyme ?

answered Feb 17, 2019 by yrcmurthy

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In humans, at the end of the first meiotic division, the male germ cells differentiate into the :

answered Feb 8, 2019 by indranpreetha

1 answer

In the experimental proof of the replication model of DNA, the radiolabelled DNA was seperated from the non-radiolabeled ones by

answered Feb 4, 2019 by sdabhinand23

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the experimental proof of the replication model of DNA was carried out by

answered Feb 4, 2019 by sdabhinand23

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Plants of endangered species are conserved through:-

answered Jan 31, 2019 by bihukarmakar

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Which of the following pairs of compounds are interconvertible in the liver by a single polypeptide chain containing two different catalytic sites ?

answered Jan 29, 2019 by lekhakrishna.lk

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__________ cells lack nucleus

answered Jan 6, 2019 by jakhar12832

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The haemoglobin of a human foetus :

answered Jan 4, 2019 by mt74208

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Starch is the mixture of two polysaccharide forms called

answered Dec 28, 2018 by cxcxvx511

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A lake near a village suffered heavy mortality of fishes within a few days. Consider the following reasons for this ?

answered Dec 8, 2018 by lshri272

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Which of the following properties is common to all cytoskeletal motor proteins (such as kinesins, myosins and dyneins) ?

answered Dec 4, 2018 by jatavankita1993

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