Description : What is Tobacco Mosaic Virus (TMV)? -Biology
Last Answer : Symptoms induced by Tobacco mosaic virus ( TMV) are somewhat dependent on the host plant and can include mosaic, mottling (Figures 1 and 2), necrosis (Figures 3 and 4), stunting, leaf curling, and yellowing of plant tissues.
Description : AIDS virus has – (1) single-stranded RNA (2) double-stranded RNA (3) single-stranded DNA (4) double-stranded DNA
Last Answer : (1) single-stranded RNA Explanation: AIDS viruses have single stranded RNA. It is composed of two copies of positive single-stranded RNA that codes for the virus's nine genes enclosed by a ... 2,000 copies of the viral protein. The single-stranded RNA is tightly bound to nucleocapsid proteins.
Description : AIDS virus is----------- A. Single-stranded RNA (Answer) B. Single-stranded DNA C. Double-stranded RNA D. Double-stranded DNA
Last Answer : A. Single-stranded RNA (Answer)
Description : Human immuno deficiency virus (HIV) has a protein coat and a genetic material which is (a) double stranded RNA (b) double stranded DNA (c) single stranded DNA (d) single stranded RNA
Last Answer : (d) single stranded RNA.
Description : AIDS virus has : (1) single-stranded RNA (2) double-stranded RNA (3) single-stranded DNA (4) double-stranded DNA
Last Answer : single-stranded RNA
Description : Assertion: The genetic material in Tobacco mosaic virus in RNA. Reason: RNA is a type of nucleic acid.
Last Answer : Assertion: The genetic material in Tobacco mosaic virus in RNA. Reason: RNA is a type of nucleic acid. A. ... is wrong D. If both As and R are wrong.
Description : Which of the following shows coiled RNA strand and capsomeres? (a) Polio virus (b) Tobacco mosaic virus (c) Measles virus (d) Retrovirus
Last Answer : (b) Tobacco mosaic virus
Description : Restriction endonucleases split (A) RNA (B) Single stranded DNA (C) Double stranded DNA (D) DNA-RNA hybrids
Last Answer : Answer : C
Description : Actinomycin D binds to (A) Double stranded DNA (B) Single stranded DNA (C) Single stranded RNA (D) DNA-RNA hybrid
Last Answer : Answer : A
Description : Restriction endonucleases recognize and cut a certain sequence of (A) Single stranded DNA (B) Double stranded DNA (C) RNA (D) Protein
Last Answer : Answer : B
Description : ? X l74 has: (a) Single stranded DNA (b) Single stranded RNA (c) Double stranded RNA (d) Double stranded DNA
Last Answer : Ans. ((a))
Description : Most viruses that infect plant possess (a) single-stranded DNA (b) single-stranded RNA (c) double-stranded DNA and RNA (d) double - stranded RNA only
Last Answer : Ans:(b)
Description : Which is wrong about nucleic acids? (a) DNA is single stranded in some viruses. (b) RNA is double stranded occasionally. (c) Length of one helix is 45 Å in B-DNA. (d) One turn of Z-DNA has 12 bases
Last Answer : (c) Length of one helix is 45 Å in B-DNA
Description : Genophore/bacterial genome or nucleoid is made of (a) histones and non-histones (b) RNA and histones (c) a single double stranded DNA (d) a single stranded DNA.
Last Answer : c) a single double stranded DNA
Description : The hereditary material present in the bacterium E.coli is (a) single-stranded DNA (b) double-stranded DNA (c) DNA (d) RNA.
Last Answer : (b) double-stranded DNA
Description : An RNA virus genome in the form of messenger RNA is referred to as a a. + strand RNA. b. double-stranded RNA c. – strand RNa d. Reverse strand RNA.
Last Answer : a. + strand RNA.
Description : Cauliflower mosaic virus contains (a) ss RNA (b) ds RNA (c) ds DNA (d) ss DNA
Last Answer : (c) ds DNA
Description : Cauliflower mosaic virus contain a. RNA b. RNA and DNA c. DNA d. None of these
Last Answer : c. DNA
Description : During transcription, do both strands of DNA get transcribed into a double stranded RNA molecule?
Last Answer : No. RNA is single stranded and is transcribed from only one of the DNA strands. DNA replication does make copies of both strands.
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
Description : In RNA molecule guanine content does not necessarily equal its cytosine content nor does its adenine content necessarily equal its uracil content since it is a (A) Single strand molecule ( ... stranded molecule (C) Double stranded helical molecule (D) Polymer of purine and pyrimidine ribonucleotides
Description : Which of the following is correct regarding AIDS causative agent HIV? (a) HIV is enveloped virus containing one molecule of single-stranded RNA and one molecule of reverse transcriptase. (b) HIV ... ) HIV is unenveloped retrovirus. (d) HIV does not escape but attacks the acquired immune response
Last Answer : (d) HIV does not escape but attacks the acquired immune response.
Description : What is the genetic material in influenza virus? (a) Double helical DNA (b) RNA (c) Single helix DNA (d) None of these
Last Answer : (b) RNA
Description : What are the symptoms of tobacco mosaic virus? -Biology
Last Answer : answer:
Description : What is the size of the tobacco mosaic virus? -Biology
Description : What are the two major components of the tobacco mosaic virus? -Biology
Description : Who discovered tobacco mosaic virus? -Biology
Description : What does tobacco mosaic virus do? -Biology
Last Answer : Symptoms induced by Tobacco mosaic virus ( TMV) are somewhat dependent on the host plant and can include mosaic, mottling , necrosis , stunting, leaf curling, and yellowing of plant tissues.
Description : What is the name of tobacco mosaic virus ?
Last Answer : The name of the tobacco mosaic virus is TMV.
Description : A tetrovirus is (A) Polio virus (B) HIV (C) Herpes virus (D) Tobacco mosaic virus
Description : Select the correct group of biocontrol agents. (a) Nostoc, Azospirillium, Nucleopolyhedrovirus (b) Bacillus thuringiensis, Tobacco mosaic virus, Aphids (c) Trichoderma, Baculovirus, Bacillus thuringiensis (d) Oscillatoria, Rhizobium, Trichoderma
Last Answer : (c) Trichoderma, Baculovirus, Bacillus thuringiensis
Description : .Tobacco mosaic virus is a tubular filament of size (a) 300 × 10nm (b) 300 × 5nm (c) 300 × 20nm (d) 700 × 30nm.
Last Answer : (c) 300 × 20nm
Description : The mitochondrial DNA is (A) Like the nuclear DNA in structure (B) Single stranded, linear (C) Double stranded, circular (D) Single stranded, circular
Description : A plasmid is a (A) Single stranded linear DNA (B) Single stranded circular DNA (C) Double stranded linear DNA (D) Double stranded circular DNA
Last Answer : Answer : D
Description : S1 nuclease hydrolyses (A) DNA of somatic cells (B) DNA of sperms (C) Any double stranded DNA (D) Any single stranded DNA
Description : Mitochondrial DNA is (A) Circular double stranded (B) Circular single stranded (C) Linear double helix (D) None of these
Last Answer : A
Description : A DNA with unequal nitrogen bases would most probably be (a) single stranded (b) double stranded (c) triple stranded (d) four stranded
Last Answer : (a) single stranded
Description : The DNA of E.coli is (a) double stranded and linear (b) double stranded and circular (c) single stranded and linear (d) single stranded and circular.
Last Answer : (b) double stranded and circular
Description : What does the positive strand in double stranded RNA viruses stands for? A- rRNA B- tRNA C- .mRNA D- None of these
Last Answer : .mRNA
Description : Is RNA is usually single-stranded.?
Last Answer : During transcription, DNA is used as a template to make a copyof single-stranded RNA. only one of the two DNA strands is used asa template for RNA synthesis. therefore only one complementarystrand of RNA is usually made
Description : Which one of the following statements is not true of RNA? a. RNA contains the monosaccharide ribose. b. RNA is primarily a single-stranded molecule. c. RNA has a sugar-phosphate backbone. d. RNA contains five different nucleotides.
Last Answer : d. RNA contains five different nucleotides.
Description : The plant virus was first isolated in crystalline form(a) TMV (b) Baceriophages (c) Cyanophages (d) HIV Q.267The
Last Answer : (a) TMV
Description : If the total amount of adenine and thymine in a double stranded DNA is 45% the amount of guanine this DNA will be `:`
Last Answer : If the total amount of adenine and thymine in a double stranded DNA is 45% the amount of guanine this DNA will be ` ... ` B. `27.5%` C. `45%` D. `55%`
Description : In sticky ends produced by restriction endonucleases (A) The 2 strands of DNA are joined to each other (B) The DNA strands stick to the restriction endonuclease (C) The ends of a double stranded fragment are overlapping (D) The ends of a double stranded fragment are non overlapping
Description : All of the following statements about restriction endonucleases are true except: (A) They are present in bacteria (B) They act on double stranded DNA (C) They recognize palindromic sequences (D) They always produce sticky ends
Description : In sea urchin DNA, which is double stranded, 17% of the bases were shown to be cytosine. The percentages of the other three bases expected to be present in this DNA are (a) G 17%, A 33%, T 33% (b) G 8.5%, A 50%, T 24.5% (c) G 34%, A 24.5%, T 24.5% (d) G 17%, A 16.5%, T 32.5%.
Last Answer : (a) G 17%, A 33%, T 33%
Description : Which one of the folLowing statements is NOT true of the influenza viruses? a. They have a segmented genome. b. The genome is double-stranded DNA. c. The viruses have an envelope. d. There are three types of flu viruses
Last Answer : b. The genome is double-stranded DNA.
Description : An F-cell is unable to initiate conjugation because it lacks a. Double-Stranded DNA. b. A Prophase. c. An F Factor. d. DNA polymerase
Last Answer : c. An F Factor.
Description : n lysogeny, A- a bacteriophage transfers bacterial DNA B- bacteria take up double stranded DNA from the environment C- DNA-degrading enzymes in the extracellular medium would stop the process D- a bacteriophage genome is integrated into the bacterial genome
Last Answer : a bacteriophage genome is integrated into the bacterial genome