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.

1 Answer

Answer :

d. RNA contains five different nucleotides.

Related questions

Description : A molecule of ATP contains a. Ribose But No Adenine. b. Phosphate But No Ribose. c. Adenine But No Deoxyribose. d. Deoxyribose But No Thymine.

Last Answer : b. Phosphate But No Ribose.

Description : Which one of the following is NOT part of an ATP MOLECULE? a. Phosphate group b. Cofactor c. Ribose d. Adenine

Last Answer : b. Cofactor

Description : Following statements describe the characteristics of the enzyme restriction endonuclease. Identify the incorrect statement. (a) The enzyme recognises a specific palindromic nucleotide sequence in the DNA. (b) ... (d) The enzyme cuts the sugar-phosphate backbone at specific sites on each strand.

Last Answer : (c) The enzyme binds DNA at specific sites and cuts only one of the two strands.

Description : A nucleic acid has a "backbone" consisting of _____. a. The nitrogenous bases. b. sugar-phosphate-sugar-phosphate-... c. N-C-N-C-N-C-N-C-... d. functional groups.

Last Answer : b. sugar-phosphate-sugar-phosphate-...

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 : Nucleotides are building blocks of nucleic acids. Each nucleotide is a composite molecule formed by (a) base-sugar-phosphate (b) base-sugar-OH (c) (base-sugar-phosphate)n (d) sugar-phosphate.

Last Answer : (a) base-sugar-phosphate

Description : Polynucleotide chain of DNA contains (a) a nitrogenous base, deoxyribose sugar and phosphate group (b) a nitrogenous base, ribose sugar and phosphate group (c) deoxyribose sugar ribose sugar and phosphate group (d) a nitrogenous base and phosphate group only

Last Answer : Ans:(a)

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

Last Answer : Answer : A

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 : 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 : In RNA, apart from ribose and phosphate, all following are present except (A) Adenine (B) Guanine (C) Thymine (D) Cytosine

Last Answer : Answer : C

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 : The smallest monosaccharide having furanose ring structure is (A) Erythrose (B) Ribose (C) Glucose (D) Fructose

Last Answer : B

Description : The monosaccharide obtained by hydrolysis of starch is : (a) D-Glucose (b) Maltose (c) D-Galactose (d) D-Ribose

Last Answer : D-Glucose

Description : Which of the following is not a monosaccharide? (a) Ribose (b) Fructose (c) Sucrose (d) Glucose

Last Answer : Sucrose

Description : Which one of the following statements is NOT true of the bacterial chromosome? a. It Is Located In The Nucleoid. b. It Usually Isa Single, Circular Molecule. c. Some Genes Are Dominant To Others. d. It Usually Is Haploid.

Last Answer : c. Some Genes Are Dominant To Others.

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 sugar moiety present in RNA is (A) Ribulose (B) Arabinose (C) Ribose (D) Deoxyribose

Last Answer : Answer : C

Description : The sugar found in RNA is (A) Ribose (B) Deoxyribose (C) Ribulose (D) Erythrose

Last Answer : A

Description : Which is a basic unit of a sugar molecule monosaccharide amino acid fatty acid nucleotide?

Last Answer : Monosaccharide

Description : are single-stranded DNA molecules that can recognize and bind to a distinctive nucLeotide sequence of a pathogen. a. Prophages b. Plasmids c. Cloning vectors d. DNA probes

Last Answer : d. DNA probes

Description : In nucleotides, phosphate is attached to sugar by (A) Salt bond (B) Hydrogen bond (C) Ester bond (D) Glycosidic bond

Last Answer : Answer : C

Description : Similarity in DNA and RNA is that (a) both are polymer of nucleotides (b) both have similar pyrimidine (c) both have similar sugar (d) both are genetic material.

Last Answer : (b) both have similar pyrimidine

Description : Similarity in DNA and RNA is that (a) both are polymer of nucleotides (b) both have similar pyrimidine (c) both have similar sugar (d) both are genetic material.

Last Answer : both are polymer of nucleotides

Description : Which of the following molecule catalyzes the transpeptidation reaction? A.RNA polymerase B.Peptidyl transferase C.DNA ligase D.DNA polymerase

Last Answer : B.Peptidyl transferase

Description : Which of the following molecule catalyzes the transpeptidation reaction? A- RNA Polymerase B- Peptidlytransferase C- DNA ligase D- DNA polymerase

Last Answer : Peptidlytransferase

Description : Which of the following molecule catalyzes the transpeptidation reaction? A- RNA polymerase B- .Peptidyltransferase C- DNA ligase D- .DNA polymerase

Last Answer : .Peptidyltransferase

Description : Which of the following molecule catalyzes the transpeptidation reaction? A- RNA Polymerase B- Peptidlytransferase C- DNA ligase D- DNA polymerase

Last Answer : Peptidlytransferase

Description : Which of the following molecule catalyzes the transpeptidation reaction? A- RNA polymerase B- .Peptidyltransferase C- DNA ligase D- .DNA polymerase

Last Answer : .Peptidyltransferase

Description : Which one of the following statements is true? a. Plasmids are circular molecules of RNA. b. RNA replicates by a conservative method of replication. c. Deletions or insertions of a ... reading frameshift during translation. d. Okazaki fragments are removed from a RNA before translation occurs.

Last Answer : c. Deletions or insertions of a nucleotide in a gene will cause a reading frameshift during translation.

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 : 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 : 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 : 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 : 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

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 : 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 : $ Proteins, polysaccharides and nucleic acid are the macromolecules of a cell. ! DNA contains Ribose Sugar.

Last Answer : $ Proteins, polysaccharides and nucleic acid are the macromolecules of a cell. ! DNA contains Ribose Sugar. A ... wrong D. If both As and R are wrong.

Description : Which of the following statements is false about an aldohexose? (a) It is a monosaccharide. (b) It contains a potential aldehyde group. (c) α-D-Glucopyranose is an aldohexose. (d) Fructose is an aldohexose

Last Answer : Fructose is an aldohexose

Description : A prokaryotic mRNA that consists of 999 nucleotides will code for how many amino acids? a. 332 b. 333 c. 666 d. 999

Last Answer : a. 332

Description : Stem and loop structures are A- proteins that help partially denatured enzymes to recover their native configuration B- structures in DNA caused by inverted repeats C- structures at the ends of linear eukaryotic DNA molecules D- the bonds between adjacent DNA nucleotides in the same strand

Last Answer : structures in DNA caused by inverted repeats

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

Description : Which one of the following pairs is mismatched? a. Protein - amino acids b. Nucleic acid - nucleotides c. Fats - glycogen d. Starch - glucose

Last Answer : c. Fats - glycogen