In RNAi, the genes are silenced using (a) ds-RNA (b) ss-DNA (c) ss-RNA (d) ds-DNA.

In RNAi, the genes are silenced using
(a) ds-RNA (b) ss-DNA
(c) ss-RNA (d) ds-DNA.
by

1 Answer

Answer :

(a) ds-RNA
by

Related questions

Cauliflower mosaic virus contains (a) ss RNA (b) ds RNA (c) ds DNA (d) ss DNA

Description : Cauliflower mosaic virus contains (a) ss RNA (b) ds RNA (c) ds DNA (d) ss DNA

Last Answer : (c) ds DNA

The process of RNA interference (RNAi) has been used in the development of plants resistant to (a) nematodes (b) fungi (c) viruses (d) insects.

Description : The process of RNA interference (RNAi) has been used in the development of plants resistant to (a) nematodes (b) fungi (c) viruses (d) insects.

Last Answer : (a) nematodes

The binding of prokaryotic DNA dependent RNA polymerase to promoter sits of genes is inhibited by the antibiotic: (A) Streptomycin (B) Rifamcin (C) Aueromycin (D) Puromycin

Description : The binding of prokaryotic DNA dependent RNA polymerase to promoter sits of genes is inhibited by the antibiotic: (A) Streptomycin (B) Rifamcin (C) Aueromycin (D) Puromycin

Last Answer : Answer : B

Genes are (A) RNA (B) DNA (C) lipoproteins and (D) Chromoproteins

Description : Genes are (A) RNA (B) DNA (C) lipoproteins and (D) Chromoproteins

Last Answer : Answer : B

The binding of prokaryotic DNA dependent RNA polymerase to promoter sites of genes is inhibited by the antibiotic: (A) Puromycin (B) Rifamycin (C) Terramycin (D) Streptomycin

Description : The binding of prokaryotic DNA dependent RNA polymerase to promoter sites of genes is inhibited by the antibiotic: (A) Puromycin (B) Rifamycin (C) Terramycin (D) Streptomycin

Last Answer : Answer : B

.Expressed Sequence Tags (ESTs) refers to (a) novel DNA sequences (b) genes expressed as RNA (c) polypeptide expression (d) DNA polymorphism.

Description : .Expressed Sequence Tags (ESTs) refers to (a) novel DNA sequences (b) genes expressed as RNA (c) polypeptide expression (d) DNA polymorphism.

Last Answer : (b) genes expressed as RNA

Tobacco mosaic virus (TMV) genes are (a) single stranded RNA (b) double stranded DNA (c) proteinaceous (d) double stranded RNA.

Description : Tobacco mosaic virus (TMV) genes are (a) single stranded RNA (b) double stranded DNA (c) proteinaceous (d) double stranded RNA.

Last Answer : (a) single stranded RNA

_______ was first used to catalog organisms into one of three domains. a. Photosynthesis b. Ribosomal RNA genes c. Nuclear DNA genes d. Mitochondrial DNA genes

Description : _______ was first used to catalog organisms into one of three domains. a. Photosynthesis b. Ribosomal RNA genes c. Nuclear DNA genes d. Mitochondrial DNA genes

Last Answer : b. Ribosomal RNA genes

Both DNA and RNA are composed of _______ a. polynucleotides b. genes c. polysaccharides d. polypeptides

Description : Both DNA and RNA are composed of _______ a. polynucleotides b. genes c. polysaccharides d. polypeptides

Last Answer : a. polynucleotides

How does RNAi regulate gene expression?

Description : How does RNAi regulate gene expression?

Last Answer : Feel Free to Answer

Match the following columns and select the correct option. Column-I Column-II (A) Bt cotton (i) Gene therapy (B) Adenosine (ii) Cellular defence deaminase deficiency (C) RNAi (iii) Detection of HIV infection (D) PCR (iv) Bacillus thuringiensis (A) (B) (C) (D) (a) (iv) (i) (ii) (iii) (b) (iii) (ii) (i) (iv) (c) (ii) (iii) (iv) (i) (d) (i) (ii) (iii) (iv)

Description : Match the following columns and select the correct option. Column-I Column-II (A) Bt cotton (i) Gene therapy (B) Adenosine (ii) Cellular defence deaminase deficiency (C) RNAi (iii) Detection of HIV infection (D) PCR (iv) Bacillus ... (i) (iv) (c) (ii) (iii) (iv) (i) (d) (i) (ii) (iii) (iv)

Last Answer : (a) (iv) (i) (ii) (iii)

The function of a repressor protein in an operon system is to prevent synthesis by binding to (A) The ribosome (B) A specific region of the operon preventing transcription of structural genes (C) The RNA polymerase (D) A specific region of the mRNA preventing translation to protein

Description : The function of a repressor protein in an operon system is to prevent synthesis by binding to (A) The ribosome (B) A specific region of the operon preventing transcription of structural genes (C) The RNA polymerase (D) A specific region of the mRNA preventing translation to protein

Last Answer : Answer : B

What is the term for manipulating the genes of organisms to introduce new characteristics? a. Genomics b. Genetic engineering c. Recombinant RNA d. Genetic resistance

Description : What is the term for manipulating the genes of organisms to introduce new characteristics? a. Genomics b. Genetic engineering c. Recombinant RNA d. Genetic resistance

Last Answer : b. Genetic engineering

In a eukaryotic microbe, those sections of a primary RNA transcript that will NOT be translated are called a. Introns. b. Anticodons. c. ―Jumping Genes.‖ d. Exons.

Description : In a eukaryotic microbe, those sections of a primary RNA transcript that will NOT be translated are called a. Introns. b. Anticodons. c. ―Jumping Genes.‖ d. Exons.

Last Answer : a. Introns.

Which one of the following is wrongly matched? (a) Transcription - Writing information from DNA to tRNA. (b) Translation - Using information in mRNA to make protein. (c) Repressor protein - Binds to operator to stop enzyme synthesis. (d) Operon - Structural genes, operator and promoter.

Description : Which one of the following is wrongly matched? (a) Transcription - Writing information from DNA to tRNA. (b) Translation - Using information in mRNA to make protein. (c) Repressor protein - Binds to operator to stop enzyme synthesis. (d) Operon - Structural genes, operator and promoter.

Last Answer : (c) Repressor protein - Binds to operator to stop enzyme synthesis.

Which one of the following is wrongly matched? (a) Transcription - Writing information from DNA to tRNA. (b) Translation - Using information in mRNA to make protein. (c) Repressor protein - Binds to operator to stop enzyme synthesis. (d) Operon - Structural genes, operator and promoter.

Description : Which one of the following is wrongly matched? (a) Transcription - Writing information from DNA to tRNA. (b) Translation - Using information in mRNA to make protein. (c) Repressor protein - Binds to operator to stop enzyme synthesis. (d) Operon - Structural genes, operator and promoter.

Last Answer : (d) Operon - Structural genes, operator and promoter

Which of the following are correct for the cell which has naked ds circular DNA? (a) Both 70S and 80S ribosome (b) Histone absent ( c ) Compartmentali

Description : Which of the following are correct for the cell which has naked ds circular DNA? (a) Both 70S and 80S ribosome (b) Histone absent ( c ) Compartmentali

Last Answer : Which of the following are correct for the cell which has naked ds circular DNA? (a) Both 70S and 80S ribosome (b) ... b and c C. a and c D. b and d

The figure below shows three steps (A, B, C) of Polymerase Chain Reaction (PCR). Select the option giving correct identification together with what it represents? A. B. C ds DNA 3 5 5 3 5 3 5 3 5 3 5 3 5 5 3 3 5 3 5 3 Region to be amplified . (a) B - denaturation at a temperature of about 98°C separating the two DNA strands (b) A - denaturation at a temperature of about 50°C (c) C - extension in the presence of heat stable DNA polymerase (d) A - annealing with two sets of primers

Description : The figure below shows three steps (A, B, C) of Polymerase Chain Reaction (PCR). Select the option giving correct identification together with what it represents? A. B. C ds DNA 3 5 5 3 ... - extension in the presence of heat stable DNA polymerase (d) A - annealing with two sets of primers

Last Answer : (c) C - extension in the presence of heat stable DNA polymerase

All of the following statements about RNA-dependent DNA polymerase are true except: (A) It synthesizes DNA using RNA as a template (B) It is also known as reverse transcriptase (C) It synthesizes DNA in 5’→3’ direction (D) It is present in all the viruses

Description : All of the following statements about RNA-dependent DNA polymerase are true except: (A) It synthesizes DNA using RNA as a template (B) It is also known as reverse transcriptase (C) It synthesizes DNA in 5’→3’ direction (D) It is present in all the viruses

Last Answer : Answer : D

The process of using information (genetic material) from DNA to construct m-RNA

Description : The process of using information (genetic material) from DNA to construct m-RNA

Last Answer : Ans. Transcription

The following statement(s) is/are true concerning newer detection methods of systemic infection. a. Enzyme-linked immunosorbent assay (ELISA) is a rapid immunologic assay used for both antigen and antibody detection b. Southern, northern, and western immunoblot techniques are used to detect DNA, RNA, or proteins, respectively c. Polymerase chain reaction (PCR) is a sensitive assay used to detect small amounts of microbial DNA, thus detecting infection at its early stages d. Infectious agents currently detected using advanced molecular techniques include cytomegalovirus (CMV) and human immunodeficiency virus (HIV)

Description : The following statement(s) is/are true concerning newer detection methods of systemic infection. a. Enzyme-linked immunosorbent assay (ELISA) is a rapid immunologic assay used for ... detected using advanced molecular techniques include cytomegalovirus (CMV) and human immunodeficiency virus (HIV)

Last Answer : Answer: a, b, c, d Although the classic detection of infection based on clinical signs of infection and bacterial culture remain the most common clinical tools, increasing ... including CMV and HIV. Furthermore, preliminary investigations into possible detection of fungal pathogens are underway

RNA interference involves (a) synthesis of cDNA and RNA using reverse transcriptase (b) silencing of specific mRNA due to complementary RNA (c) interference of RNA in synthesis of DNA (d) synthesis of mRNA from DNA

Description : RNA interference involves (a) synthesis of cDNA and RNA using reverse transcriptase (b) silencing of specific mRNA due to complementary RNA (c) interference of RNA in synthesis of DNA (d) synthesis of mRNA from DNA

Last Answer : (b) silencing of specific mRNA due to complementary RNA

In some viruses DNA is synthesized by using RNA as a template. Such a DNA is called............

Description : 9 In some viruses DNA is synthesized by using RNA as a template. Such a DNA is called............ a. r-DNA b. C-DNA c. B- DNA d. A- DNA

Last Answer : Ans. b C-DNA

Assetion: In recombinant DNA technology, human genes are often transferred into bacteria (prokaryotes) or yeast (eukaryote) Reason : Both bacteria and

Description : Assetion: In recombinant DNA technology, human genes are often transferred into bacteria (prokaryotes) or yeast (eukaryote) Reason : Both bacteria and

Last Answer : Assetion: In recombinant DNA technology, human genes are often transferred into bacteria (prokaryotes) or ... . If both assertion and reason are false

What is a long continuous strand of DNA that contains genes often see in the shape of an x when with its homologous pa?

Description : What is a long continuous strand of DNA that contains genes often see in the shape of an x when with its homologous pa?

Last Answer : The dna strand is a exstractisies

Chimeric DNA (A) Is found in bacteriophages (B) Contains unrelated genes (C) Has no restriction sites (D) Is palindromic

Description : Chimeric DNA (A) Is found in bacteriophages (B) Contains unrelated genes (C) Has no restriction sites (D) Is palindromic

Last Answer : Answer : B

Besides structural genes that encode proteins, DNA contains some regulatory sequences which are known as (A) Operons (B) Cistrons (C) Cis-acting elements (D) Trans-acting factors

Description : Besides structural genes that encode proteins, DNA contains some regulatory sequences which are known as (A) Operons (B) Cistrons (C) Cis-acting elements (D) Trans-acting factors

Last Answer : Answer : C

Which of the following events occurred first? (1) DNA structure of genes was discovered by James D Watson and Francis Crick (2) Yuri Gagarin became the first man in space (3) World's first human heart transplant was performed by Dr. Christian Barnard (4) World's first test tube baby Louise Brown was born in U.K.

Description : Which of the following events occurred first? (1) DNA structure of genes was discovered by James D Watson and Francis Crick (2) Yuri Gagarin became the first man in space (3) World's first human heart ... by Dr. Christian Barnard (4) World's first test tube baby Louise Brown was born in U.K.

Last Answer : (1) DNA structure of genes was discovered by James D Watson and Francis Crick Explanation: Discovery of DNA structure of genes: 25 April, 1953; Yuri Gagarin's feat of becoming the first man in space: ... human heart transplant: 3 December, 1967; and World's first test tube baby: 25 July, 1978.

A group of genes whose activity is coordinated by a DNA site is – (1) operon (2) cistron (3) polysome (4) polypeptide

Description : A group of genes whose activity is coordinated by a DNA site is – (1) operon (2) cistron (3) polysome (4) polypeptide

Last Answer : (1) operon Explanation: The operon is defined as a group of genes whose activity is coordinated by a DNA site. An operon is a functioning unit of genomic DNA containing a cluster ... together in the cytoplasm, or undergo trans-splicing to create monocistronic mR-NAs that are translated separately.

Write note on (a) DNA (b) chromosomes (c) Genes

Description : Write note on (a) DNA (b) chromosomes (c) Genes 

Last Answer : (a) DNA  Deoxyribonucleic acid, or DNA, is a molecule that contains the instructions an organism needs to develop, live and reproduce.  These instructions are found inside every cell ... acts as instructions to make molecules called proteins  Genes are located on chromosomes 

Proto-oncogenes are: B A. DNA sequences in cells that are oncogenes themselves B. Cellular copies of genes that were first found in oncogenic retroviruses C. DNA viral sequences that are known to infect human cells D. Bacterial DNA counterparts

Description : Proto-oncogenes are: B A. DNA sequences in cells that are oncogenes themselves B. Cellular copies of genes that were first found in oncogenic retroviruses C. DNA viral sequences that are known to infect human cells D. Bacterial DNA counterparts

Last Answer : Cellular copies of genes that were first found in oncogenic retroviruses

In the regulation of genes: a. more than 90% of the base sequences in human DNA have not known function b. extrons are the part of the gene that code for amino acids found in the final proteins. c. introns usually begins with the nucleotide sequence GT d. all above

Description : In the regulation of genes: a. more than 90% of the base sequences in human DNA have not known function b. extrons are the part of the gene that code for amino acids found in the final proteins. c. introns usually begins with the nucleotide sequence GT d. all above

Last Answer : all above

he molecular scissors use3d to cut DNA into specific genes of interest are called (a) Exonucleases (b) Restriction endonucleases (c) Ligases (d) Polymerases

Description : he molecular scissors use3d to cut DNA into specific genes of interest are called (a) Exonucleases (b) Restriction endonucleases (c) Ligases (d) Polymerases

Last Answer : (b) Restriction endonucleases

The eukaryotic genome differs from the prokaryotic genome because (a) the DNA is complexed with histone in prokaryotes (b) the DNA is circular and single stranded in prokaryotes (c) repetitive sequences are present in eukaryotes (d) genes in the former case are organised into operons.

Description : The eukaryotic genome differs from the prokaryotic genome because (a) the DNA is complexed with histone in prokaryotes (b) the DNA is circular and single stranded in prokaryotes (c) repetitive sequences are present in eukaryotes (d) genes in the former case are organised into operons.

Last Answer : (b) the DNA is circular and single stranded in prokaryotes

Which statement is correct for bacterial transduction? (a) Transfer of some genes from one bacteria to another bacteria through virus. (b) Transfer of genes from one bacteria to another bacteria by conjugation. (c) Bacteria obtained its DNA directly from mother cell. (d) Bacteria obtained DNA from other external source.

Description : Which statement is correct for bacterial transduction? (a) Transfer of some genes from one bacteria to another bacteria through virus. (b) Transfer of genes from one bacteria to another bacteria ... its DNA directly from mother cell. (d) Bacteria obtained DNA from other external source.

Last Answer : (a) Transfer of some genes from one bacteria to another bacteria through virus.

Which statement is correct for bacterial transduction? (a) Transfer of some genes from one bacteria to another bacteria through virus. (b) Transfer of genes from one bacteria to another bacteria by conjugation. (c) Bacteria obtained its DNA directly from mother cell. (d) Bacteria obtained DNA from other external source.

Description : Which statement is correct for bacterial transduction? (a) Transfer of some genes from one bacteria to another bacteria through virus. (b) Transfer of genes from one bacteria to another bacteria ... its DNA directly from mother cell. (d) Bacteria obtained DNA from other external source.

Last Answer : (a) Transfer of some genes from one bacteria to another bacteria through virus

The development of global regulatory systems in prokaryotes A- determines the exact location of the cell on the globe B- aids in DNA replication C- .determines the exact location of the replication site D- regulates many genes under varying environmental conditions

Description : The development of global regulatory systems in prokaryotes A- determines the exact location of the cell on the globe B- aids in DNA replication C- .determines the exact location of the replication site D- regulates many genes under varying environmental conditions

Last Answer : regulates many genes under varying environmental conditions

What is the term used for a segment of DNA with one or more genes in the centre and the twoends carrying inverte d repeat sequences of nucleotides? A- Plasmid B- Transposon C- Insertion sequence D- None of these

Description : What is the term used for a segment of DNA with one or more genes in the centre and the twoends carrying inverte d repeat sequences of nucleotides? A- Plasmid B- Transposon C- Insertion sequence D- None of these

Last Answer : Transposon

A microarray differs from a gene fusion in that, it A- carries DNA segments from many different genes B- is not constructed by cloning C- gives direct measurement of mRNA level D- all of the above

Description : A microarray differs from a gene fusion in that, it A- carries DNA segments from many different genes B- is not constructed by cloning C- gives direct measurement of mRNA level D- all of the above

Last Answer : all of the above

The main difference between a self-transmissible and a mobilizableplasmidis that the selftransmissible plasmid A- transfers both strands of the plasmid DNA B- carries genes encoding the mating apparatus C- transfers antibiotic resistance genes D- usually has a transposon inserted into it

Description : The main difference between a self-transmissible and a mobilizableplasmidis that the selftransmissible plasmid A- transfers both strands of the plasmid DNA B- carries genes encoding the mating apparatus C- transfers antibiotic resistance genes D- usually has a transposon inserted into it

Last Answer : carries genes encoding the mating apparatus

Why Deinococcusradiodurans is able to survive massive exposure to radiation? A- .Because it produces a thick shell which acts as a shield from the radiation B- Because it has unique DNA repair mechanisms C- Because its cellwall contains radioactive elements D- Because it has many copies of genes encoding DNA repair

Description : Why Deinococcusradiodurans is able to survive massive exposure to radiation? A- .Because it produces a thick shell which acts as a shield from the radiation B- Because it has unique DNA repair ... its cellwall contains radioactive elements D- Because it has many copies of genes encoding DNA repair

Last Answer : Because it has many copies of genes encoding DNA repair

Which does NOT occur in a cell stimulated by a steroid hormone? A) The steroid hormone enters the cell by crossing the plasma membrane. B) The hormone binds to a receptor molecule in the cytoplasm. C) The second messenger cyclic AMP is stimulated by the hormone-receptor complex. D) The hormone-receptor complex binds the chromatin and activates certain genes. E) DNA is transcribed, mRNA is translated, and the result is protein synthesis.

Description : Which does NOT occur in a cell stimulated by a steroid hormone? A) The steroid hormone enters the cell by crossing the plasma membrane. B) The hormone binds to a receptor molecule in the ... activates certain genes. E) DNA is transcribed, mRNA is translated, and the result is protein synthesis.

Last Answer : C) The second messenger cyclic AMP is stimulated by the hormone-receptor complex. D) The hormone-receptor complex binds the chromatin and activates certain genes.

A group of genes whose activity is coordinated by a DNA site is called: (1) operon (2) cistron (3) polysome (4) polypeptide

Description : A group of genes whose activity is coordinated by a DNA site is called: (1) operon (2) cistron (3) polysome (4) polypeptide

Last Answer : operon

Which of the following events occurred first ? (1) DNA structure of genes was discovered by James D Watson and Francis Crick (2) Yuri Gagarin became the first man in space (3) World’s first human heart transplant was performed by Dr. Christian Barnard (4) World’s first test tube baby Louise Brown was born in U.K

Description : Which of the following events occurred first ? (1) DNA structure of genes was discovered by James D Watson and Francis Crick (2) Yuri Gagarin became the first man in space (3) World's first human heart ... by Dr. Christian Barnard (4) World's first test tube baby Louise Brown was born in U.K

Last Answer :  DNA structure of genes was discovered by James D Watson and Francis Crick

Wife SS increase to 50% when I collect my SS if born after 1954?

Description : Wife SS increase to 50% when I collect my SS if born after 1954?

Last Answer : Go in person to your local social security office. You will get correct answers there and not guesses from people that aren’t sure. Welcome to Fluther!

I'm 66 and started collecting ss at age 62. My husband is 60 and still working. Is there anyway I can collect ss on his account?

Description : I'm 66 and started collecting ss at age 62. My husband is 60 and still working. Is there anyway I can collect ss on his account?

Last Answer : Ss?

I retired at 100% SS benefits. My wife is presently 62 and 2 months. Can she begin to collect half of my social security check now?

Description : I retired at 100% SS benefits. My wife is presently 62 and 2 months. Can she begin to collect half of my social security check now?

Last Answer : No if you are alive she can only collect her SS. At 62 she can collect about ¾’s of her benefits.

Was the SS Empress of Russia the same ship as the RMS Empress of Russia?

Description : Was the SS Empress of Russia the same ship as the RMS Empress of Russia?

Last Answer : This ship was built at Fairfields on the Clyde in 1913. It was scrapped in 1945. There is a model of the ship in the Glasgow Transport Museum. The Empress of Russia was a steamship and so the ... RMS for Royal Mail Ship to indicate when it was carrying mail under contract to the British Royal Mail

My my wife and I are both divorced and on social security. She is asking for $500.00 that ss pays me monthy. She gets half of my ss. Can she di this I live in Michigan?

Description : My my wife and I are both divorced and on social security. She is asking for $500.00 that ss pays me monthy. She gets half of my ss. Can she di this I live in Michigan?

Last Answer : In divorce situations the ex spouse is only entitled to 50% of the SS benefit of the higher earning partner. No, she cannot do this. A quick call to your local SS office will ... requesting modification and they must prove a major change in circumstance not just arbitrarily deciding they want more.

I have been on SSDI for 15 years and am 65 years old. My wife just turn 62 years old and applied for SS.Does she get a part of SSDI or my life earnings?

Description : I have been on SSDI for 15 years and am 65 years old. My wife just turn 62 years old and applied for SS.Does she get a part of SSDI or my life earnings?

Last Answer : I don't think so, if she is not disabled. Has your wife worked all these years? If so she would draw off of her own benefit. You need to call your local social security office and ask them ... apply for any S.S. benefit but you will forfeit around 30% by taking it earlier than full retirement age.