Answers posted by suganyadevi.p

0 votes

Restriction ensymes are produced by

answered Nov 22, 2016

Ans: (D) bacteria onlyOnly prokaryotes produce restriction enzymes. Though yeast in unicellular, it ...

0 votes

Bt toxin is acquires the active form from an inactive protoxins at

answered Nov 22, 2016

Ans: (C) alkaline pHIn the presence of alkaline pH of the gut, Bt toxin acquires the active form.

0 votes

The first recombinant insulin was synthesised as

answered Nov 22, 2016

Ans: (D) two seperate chains and then the inter-chain disulphide bond was addded later

0 votes

Isoelectric focusing can be combined with SDS-PAGE to obtain very high resolution separations in a procedure known as

answered Nov 22, 2016

Ans: ( D ) two -dimensional gel electrophoresis

0 votes

Match the following

answered Nov 22, 2016

Ans: (C) 1-d,2-e,3-a

0 votes

Cotton bollworms are controlled by __ while corm borers are controlled by __

answered Nov 22, 2016

Ans: (C) cry1Ac and cry1Ab

0 votes

RNA polymerase can independently catalyse

answered Nov 22, 2016

Ans: (D) all 3

0 votes

___ plays structural and catalytic role during translation

answered Nov 22, 2016

Ans: (B) rRNA

0 votes

Independent pairs segregate independently of each other ___________ while One pair segregates independently of another pair refers to ____

answered Nov 22, 2016

Ans: (C) genes, genes

0 votes

In which condition, the level of intracellular cAMP rises, CRP-cAMP complex is formed that stimulates transcription of the lac operon by using lactose as an alternative carbon source ?

answered Nov 22, 2016

Ans: ( C ) when glucose is absentIn the absence of glucose, the level of intracellular cAMP rises, ...

0 votes

Movement of circulating neutrophils into tissues is known as

answered Nov 22, 2016

Ans: ( B ) extravasationExtravasation refers to the movement of WBC from the capillaries to the ti...

0 votes

The primary root and its branches constitute

answered Nov 22, 2016

Ans: ( B ) Tap root system

0 votes

In an experiment where red and white flowers are crossed and the F2 generation not having pink flowers can be explained by

answered Nov 22, 2016

Ans: (B) Law of dominance

0 votes

Expand IPTG

answered Nov 22, 2016

Ans: ( D ) isopropylthiogalactoside

0 votes

The two alleles of a gene pair are located on ____ sites on ____ chromosome

answered Nov 22, 2016

Ans: (B) homologous, homologous

0 votes

In prokaryotic ribosome, one of the binding sites for tRNA is P site which is responsible for ?

answered Nov 22, 2016

Ans: ( A ) tRNA release from ribosome

0 votes

Lecithin is an example of

answered Nov 22, 2016

Ans: (C) phospholipid

0 votes

The chromosome contains a constriction called ____ and shows the presence of disc shaped structures in the sides called ______

answered Nov 22, 2016

Ans: (B) centromere,kinetochore

0 votes

State which of the following is true:

answered Nov 21, 2016

Ans: (C) a,b,d

0 votes

Dysentry, plague and diphtheria are examples of

answered Nov 21, 2016

Ans: (D) bacterial infection

0 votes

Condition where the finger nails and lips turning gray to bluish is characteristic of

answered Nov 21, 2016

The symptoms of pneumonia include fever, chills, cough and headache. In severe cases, the lips and ...

0 votes

Macrophages and monocytes destroy the foreign pathogens by

answered Nov 21, 2016

Ans: (D) phagocytosis

0 votes

The first recombinant DNA vaccine was made available for

answered Nov 21, 2016

Ans: (D) hepatitis BIn 1987, the recombinant vaccine for Hep - B (HBs Ag) became the first synthetic...

0 votes

Horns of mammals are mostly composed of

answered Nov 21, 2016

Ans: (C) Is the right answer

0 votes

Virus mediated transfer of the genetic material from one bacterial cell to the other by means of virus particles is called

answered Nov 21, 2016

Ans: ( D ) Transduction

0 votes

Which compound stabilizes tubulin in microtubules and promotes polymerization?

answered Nov 21, 2016

Ans: ( B ) taxol

0 votes

When X -gal is included in the agar medium, colonies carrying (a) parental non recombinant plasmids become deep blue, whereas (b) recombinant plasmids remain an ordinary creamy white or become tinted in pale egg-shell

answered Nov 21, 2016

Ans: ( C ) (a) true, (b) true

0 votes

The word "Plasmid" was described as an extra chromosomal genetic element which was introduced by :

answered Nov 21, 2016

Ans: ( C ) Joshua Lederberg, 1952

0 votes

Multiple identical copies of a template DNA are made by

answered Nov 21, 2016

Ans: (C) cloning

0 votes

The infection by Meloidegyne incognitia was handled by __ methodology

answered Nov 21, 2016

Ans : (A) RNAi

0 votes

I cut the source DNA with ECoRI and plasmid DNA with HIndII and add DNA ligase and insert it into Ecoli. But Ecoli fails to express my gene of interest because

answered Nov 21, 2016

Ans: (C) The restriction enzymes were differentSame restriction enzyme has to be used for cutting a...

0 votes

The no. of adenylate residues added during tailing is

answered Nov 21, 2016

Ans: (C) 200-300

0 votes

X-linked recessive trait is transmitted from

answered Nov 21, 2016

Ans: (A) female carrier to male progenyFemale have 2X chromosomes. So they can be carriers with one ...

0 votes

Congenital heart disease may be a diagonostic marker for

answered Nov 21, 2016

Ans: (A) Turners Syndrome

0 votes

Identify the procedure showm in the picture:

answered Nov 21, 2016

Ans: (A) tubectomyFallopian tubes are cut and ends are ligated

1 vote

Which of the following is incorrect? (1) Human embryos have two pairs of ducts to let gametes out of the body, (2) Wolffian ducts develops in males into the epididymis and vas deferens, (3) Müllerian ducts develops in females into the Fallopian tubes, uterus and vagina

answered Nov 21, 2016

Ans: ( C ) Only (1) is incorrect

0 votes

Which of the following are found only in organisms containing polycistronic mRNA ?

answered Nov 17, 2016

Ans: (B) Polar MutationsPolar mutations affect expression of doconstream genes or operons. It can al...

0 votes

Assigning funcitons to the sequences is called

answered Nov 17, 2016

Ans: (C) sequence annotation

0 votes

Most promoter sites for RNA polymeraseII have conserved sequence located about 25-35 bp upstream of the transcriptional start site known as

answered Nov 17, 2016

Ans: ( C ) TATA boxTATA box is a DNA sequence that indicates where a genetic sequence can be read ...

0 votes

The recessive allele does not get expresssed in the F1 but is expressed in the F2. This can be explained on the basis of

answered Nov 17, 2016

Ans: (D) Law of DominanceThis law states that recessive alleles will always be masked by the dominan...

0 votes

Consider red flowers are dominant over blue flowers. When the test cross gives 50% blue and 50 % red, the parent is

answered Nov 17, 2016

Ans: (B) heterozygousRR ---> Red Flowers ; Rr ---> Red Flowersrr ---> Blue Flowershttps://c...

0 votes

multinucleate condition leads to the formation of ___ in coconut

answered Nov 17, 2016

Ans: (A) syncytiumMultinucleate mass of protoplasm without cellular boundaries are called syncytium....

0 votes

Arachidonic acid is

answered Nov 17, 2016

Ans: (B) insoluble in waterArachidonic acid is a polyunsaturated omega - 6 fatty acid with a formula...

0 votes

The beginning of the pairing of chromosomes occurs at

answered Nov 17, 2016

Ans: (B) zygotene

0 votes

which of the following is not an example for inclusion body

answered Nov 17, 2016

Ans: (D) amino acid granulesInclusion bodies are reserve food material in prokaryotes and stored in ...

0 votes

Match the following:

answered Nov 17, 2016

Ans: (D) 1-b,2-c,3-d,4-aPrimary structure of a protein refers to the linear sequence of aminoacids i...

0 votes

Ringworm infection is caused by

answered Nov 17, 2016

Ringworm infections are caused by the species of Microsporum, Epidermophyton, Trichophyton.Each anti...

0 votes

Each antibody has ___ chains

answered Nov 17, 2016

Two heavy and two light chainsAns: (D) 4 peptide chains

0 votes

virus infected cells produce proteins called

answered Nov 17, 2016

Ans: (A) interferonsA protein is released by animal cells, usually in response to the entry of a vir...

0 votes

Ciliated epithelium is found on

answered Nov 17, 2016

( B ) Is the right answer.Ciliated epithelium is formed of columnar or cuboidal epithelial cells tha...

Ask Questions, Get Answers