RNA does not contain (A) Uracil (B) Adenine (C) Thymine (D) Ribose

RNA does not contain (A) Uracil (B) Adenine (C) Thymine (D) Ribose
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RNA does not contain (A) adenine (B) OH methyl cytosine (C) d-ribose (D) Uracil

Description : RNA does not contain (A) adenine (B) OH methyl cytosine (C) d-ribose (D) Uracil

Last Answer : Answer : B

Acid hydrolysis of ribonucleic acid would yield the following major products: (A) d- deoxyribose, cytosine, adenine (B) d-ribose, thymine, Guanine (C) d-ribose, cytosine, uracil, thymine (D) d-ribose, uracil, adenine, guanine, cytosine

Description : Acid hydrolysis of ribonucleic acid would yield the following major products: (A) d- deoxyribose, cytosine, adenine (B) d-ribose, thymine, Guanine (C) d-ribose, cytosine, uracil, thymine (D) d-ribose, uracil, adenine, guanine, cytosine

Last Answer : Answer : D

Which one of the following is not a constituent of RNA? (A) Deoxyribose (B) Uracil (C) Adenine (D) Thymine

Description : Which one of the following is not a constituent of RNA? (A) Deoxyribose (B) Uracil (C) Adenine (D) Thymine

Last Answer : Answer : A

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

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

In RNA, the complementary base of adenine is (A) Cytosine (B) Guanine (C) Thymine (D) Uracil

Description : In RNA, the complementary base of adenine is (A) Cytosine (B) Guanine (C) Thymine (D) Uracil

Last Answer : Answer : D

The complementary base of adenine in RNA is (A) Thymine (B) Cystosine (C) Guanine (D) Uracil

Description : The complementary base of adenine in RNA is (A) Thymine (B) Cystosine (C) Guanine (D) Uracil

Last Answer : Answer : D

DNA does not contain (A) Thymine (B) Adenine (C) Uracil (D) Deoxyribose

Description : DNA does not contain (A) Thymine (B) Adenine (C) Uracil (D) Deoxyribose

Last Answer : Answer : C

Which base in place of thymine is present in RNA? (1) Adenine (2) Guanine (3) Uracil (4) Cytosine

Description : Which base in place of thymine is present in RNA? (1) Adenine (2) Guanine (3) Uracil (4) Cytosine

Last Answer : (3) Uracil Explanation: DNA (Deoxyribonucleic acid) contains 2-cleoxy-ribose sugar. It contains cytosine and thymine as pyrimidine bases and guanine and adenine as purine bases. RNA (Ribonucleic ... sugar. It contains cytosine and uracil as pyrimidine bases and guanine and adenine as purine bases.

RNA does not possess (a) uracil (b) thymine (c) adenine (d) cytosine.

Description : RNA does not possess (a) uracil (b) thymine (c) adenine (d) cytosine.

Last Answer : (d) cytosine

In RNA, thymine is replaced by (a) adenine (b) guanine (c) cytosine (d) uracil.

Description : In RNA, thymine is replaced by (a) adenine (b) guanine (c) cytosine (d) uracil.

Last Answer : d) uracil.

Which base in place of thymine is present in RNA ? (1) Adenine (2) Guanine (3) Uracil (4) Cytosine

Description : Which base in place of thymine is present in RNA ? (1) Adenine (2) Guanine (3) Uracil (4) Cytosine

Last Answer : Uracil

RNA does not contain (A) Uracil (B) Adenine (C) Hydroxy methyl cytosine (D) Phosphate

Description : RNA does not contain (A) Uracil (B) Adenine (C) Hydroxy methyl cytosine (D) Phosphate

Last Answer : Answer : C

Hybridoma cells are selected by culturing them in a medium containing (A) Adenine, guanine, cytosine and thymine (B) Adenine, guanine, cytosine and uracil (C) Hypoxanthine, aminopterin and thymine (D) Hypoxanthine, aminopterin and thymidine

Description : Hybridoma cells are selected by culturing them in a medium containing (A) Adenine, guanine, cytosine and thymine (B) Adenine, guanine, cytosine and uracil (C) Hypoxanthine, aminopterin and thymine (D) Hypoxanthine, aminopterin and thymidine

Last Answer : Answer : D

Exposure of DNA to ultraviolet radiation can lead to the formation of (A) Adenine dimers (B) Guanine dimers (C) Thymine dimers (D) Uracil dimers

Description : Exposure of DNA to ultraviolet radiation can lead to the formation of (A) Adenine dimers (B) Guanine dimers (C) Thymine dimers (D) Uracil dimers

Last Answer : Answer : C

In DNA, the complementary base of adenine is (A) Guanine (B) Cytosine (C) Uracil (D) Thymine

Description : In DNA, the complementary base of adenine is (A) Guanine (B) Cytosine (C) Uracil (D) Thymine

Last Answer : Answer : D

In DNA molecule (A) Guanine content does not equal cytosine content (B) Adenine content does not equal thymine content (C) Adenine content equals uracil content (D) Guanine content equals cytosine content

Description : In DNA molecule (A) Guanine content does not equal cytosine content (B) Adenine content does not equal thymine content (C) Adenine content equals uracil content (D) Guanine content equals cytosine content

Last Answer : Answer : D

Guanine is always paired with a. adenine b. cytosine c. thymine d. uracil

Description : Guanine is always paired with a. adenine b. cytosine c. thymine d. uracil

Last Answer : cytosine

Adenine is always paired with a. guanine b. cytosine c. thymine d. uracil

Description : Adenine is always paired with a. guanine b. cytosine c. thymine d. uracil

Last Answer : thymine

Which one of the following pairs of nitrogenous bases of nucleic acids, is wrongly matched with the category mentioned against it? (a) Guanine, Adenine - Purines (b) Adenine, Thymine - Purines (c) Thymine, Uracil - Pyrimidines (d) Uracil, Cytosine - Pyrimidines

Description : Which one of the following pairs of nitrogenous bases of nucleic acids, is wrongly matched with the category mentioned against it? (a) Guanine, Adenine - Purines (b) Adenine, Thymine - Purines (c) Thymine, Uracil - Pyrimidines (d) Uracil, Cytosine - Pyrimidines

Last Answer : (b) Adenine, Thymine - Purines

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.

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.

Which of the following nitrogen base is not present in DNA? a. Thymine. b. Cytosine. c. Adenine. d. Uracil.

Description : Which of the following nitrogen base is not present in DNA? a. Thymine. b. Cytosine. c. Adenine. d. Uracil.

Last Answer : d. Uracil.

Whcih of the following compound is present in RNA but absent from DNA? (A) Thymine (B) Cytosine (C) Uracil (D) Guanine

Description : Whcih of the following compound is present in RNA but absent from DNA? (A) Thymine (B) Cytosine (C) Uracil (D) Guanine

Last Answer : Answer : C

The nitrogenous base present in the RNA molecule is (A) Thymine (B) Uracil (C) Xanthine (D) Hypoxanthine

Description : The nitrogenous base present in the RNA molecule is (A) Thymine (B) Uracil (C) Xanthine (D) Hypoxanthine

Last Answer : Answer : B

In RNA molecule (A) Guanine content equals cytosine (B) Adenine content equals uracil (C) Adenine content equals guanine (D) Guanine content does not necessarily equal its cytosine content.

Description : In RNA molecule (A) Guanine content equals cytosine (B) Adenine content equals uracil (C) Adenine content equals guanine (D) Guanine content does not necessarily equal its cytosine content.

Last Answer : Answer : D

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 (B) Double stranded molecule (C) Double stranded helical molecule (D) Polymer of purine and pyrimidine ribonucleotides

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

True statements about the nucleic acid include: a. contains purine and pyrimidine which are bound together by covalent bonds b. there is always an equal concentration of purine and pyrimidine c. in RNA, thymine is replaced by uracil d. introns is more common than exons on the DNA e. the histones mark the excision site

Description : True statements about the nucleic acid include: a. contains purine and pyrimidine which are bound together by covalent bonds b. there is always an equal concentration of purine and pyrimidine c. in RNA, ... d. introns is more common than exons on the DNA e. the histones mark the excision site

Last Answer : there is always an equal concentration of purine and pyrimidine

Which purine base is found in RNA? (a) Thymine (b) Uracil (c) Cytosine (d) Guanine

Description : Which purine base is found in RNA? (a) Thymine (b) Uracil (c) Cytosine (d) Guanine

Last Answer : (d) Guanine

The RNA molecules from a single strand of ribonucleotides of (a) Adenine, guanine, cytosins and uracil (b) Adenine, guanine and cytosins (c) Adenine and guanine (d) None of the above

Description : The RNA molecules from a single strand of ribonucleotides of (a) Adenine, guanine, cytosins and uracil (b) Adenine, guanine and cytosins (c) Adenine and guanine (d) None of the above

Last Answer : Ans:(a)

Purines found both in DNA and RNA are (a) cytosine and thymine (b) adenine and thymine (c) adenine and guanine (d) guanine and cytosine.

Description : Purines found both in DNA and RNA are (a) cytosine and thymine (b) adenine and thymine (c) adenine and guanine (d) guanine and cytosine.

Last Answer : (c) adenine and guanine

With regard to DNA molecules: a. they contain adenine, cytosine, guanine and uracil bases b. they can be detected with Western blotting c. they can be detected with Southern blotting d. they are denatured at temperature of 1000C

Description : With regard to DNA molecules: a. they contain adenine, cytosine, guanine and uracil bases b. they can be detected with Western blotting c. they can be detected with Southern blotting d. they are denatured at temperature of 1000C

Last Answer : they can be detected with Southern blotting

Which of the following statements about nucleic acid is most correct? (A) Both pentose nucleic acid and deoxypentose nucleic acid contain the same pyrimidines (B) Both pentose nucleic acid and deoxypentose nucleic acid and deoxypentose nucleic acid Contain the same purines (C) RNA contains cytosine and thymine (D) DNA and RNA are hydrolysed by weak alkali

Description : Which of the following statements about nucleic acid is most correct? (A) Both pentose nucleic acid and deoxypentose nucleic acid contain the same pyrimidines (B) Both pentose nucleic acid and deoxypentose ... (C) RNA contains cytosine and thymine (D) DNA and RNA are hydrolysed by weak alkali

Last Answer : Answer : B

Uracil and ribose form (A) Uridine (B) Cytidine (C) Guanosine (D) Adenosine

Description : Uracil and ribose form (A) Uridine (B) Cytidine (C) Guanosine (D) Adenosine

Last Answer : Answer : A

β -Alanine is formed from catabolism of (A) Thymine (B) Thymine and cytosine (C) Thymine and uracil (D) Cytosine and uracil

Description : β -Alanine is formed from catabolism of (A) Thymine (B) Thymine and cytosine (C) Thymine and uracil (D) Cytosine and uracil

Last Answer : Answer : D

Free ammonia is liberated during the catabolism of (A) Cytosine (B) Uracil (C) Thymine (D) All of these

Description : Free ammonia is liberated during the catabolism of (A) Cytosine (B) Uracil (C) Thymine (D) All of these

Last Answer : Answer : D

β -Aminoisobytyrate is formed from catabolism of (A) Cytosine (B) Uracil (C) Thymine (D) Xanthine

Description : β -Aminoisobytyrate is formed from catabolism of (A) Cytosine (B) Uracil (C) Thymine (D) Xanthine

Last Answer : Answer : C

A nitrogenous base that does not occur in mRNA is (A) Cytosine (B) Thymine (C) Uracil (D) All of these

Description : A nitrogenous base that does not occur in mRNA is (A) Cytosine (B) Thymine (C) Uracil (D) All of these

Last Answer : Answer : A

2, 4-Dioxypyrimidine is (A) Thymine (B) Cystosine (C) Uracil (D) Guanine

Description : 2, 4-Dioxypyrimidine is (A) Thymine (B) Cystosine (C) Uracil (D) Guanine

Last Answer : Answer : C

Nitrosamine can deaminate (A) Cytosine to form uracil (B) Adenine to form xanthine (C) Guanine to form hypoxanthine (D) All of these

Description : Nitrosamine can deaminate (A) Cytosine to form uracil (B) Adenine to form xanthine (C) Guanine to form hypoxanthine (D) All of these

Last Answer : Answer : A

The nucleic acid base found in mRNA but not in DNA is (A) Adenine (B) Cytosine (C) Guanine (D) Uracil

Description : The nucleic acid base found in mRNA but not in DNA is (A) Adenine (B) Cytosine (C) Guanine (D) Uracil

Last Answer : Answer : D

Substitution of a thymine base by adenine in DNA is known as ((A) Transposition (B) Transition (C) Transversion (D) Frameshift mutation

Description : Substitution of a thymine base by adenine in DNA is known as ((A) Transposition (B) Transition (C) Transversion (D) Frameshift mutation

Last Answer : Answer : C

The number of hydrogen bonds between adenine and thymine in DNA is (A) One (B) Two (C) Three (D) Four

Description : The number of hydrogen bonds between adenine and thymine in DNA is (A) One (B) Two (C) Three (D) Four

Last Answer : Answer : B

The number of adenine and thymine bases is equal in (A) DNA (B) mRNA (C) tRNA (D) rRNA

Description : The number of adenine and thymine bases is equal in (A) DNA (B) mRNA (C) tRNA (D) rRNA

Last Answer : Answer : A

In DNA, three hydrogen bonds are formed between (A) Adenine and guanine (B) Adenine and thymine (C) Guanine and cytosine (D) Thymine and cytosine

Description : In DNA, three hydrogen bonds are formed between (A) Adenine and guanine (B) Adenine and thymine (C) Guanine and cytosine (D) Thymine and cytosine

Last Answer : Answer : C

An increased melting temperature of duplex DNA results from a high content of (A) Adenine + Guanine (B) Thymine + Cytosine (C) Cytosine + Guanine (D) Cytosine + Adenine

Description : An increased melting temperature of duplex DNA results from a high content of (A) Adenine + Guanine (B) Thymine + Cytosine (C) Cytosine + Guanine (D) Cytosine + Adenine

Last Answer : Answer : C

Why does thymine replace uracil in DNA?

Description : Why does thymine replace uracil in DNA? 

Last Answer : First, some clarification. As you already know, the difference between RNA and DNA is the existence of a hydroxyl (-OH) group on the 2' carbon of the ribose sugar in the backbone. The removal ... thymine for uracil in DNA protects the DNA from attack and maintains the fidelity of DNA replication.  

.Genetic code consists of (a) adenine and guanine (b) cytosine and uracil (c) cytosine and guanine (d) all of these.

Description : .Genetic code consists of (a) adenine and guanine (b) cytosine and uracil (c) cytosine and guanine (d) all of these.

Last Answer : d) all of these.

DNA synthesis can be specifically measured by estimating the incorporation of radio-labelled (a) thymidine (b) deoxyribose sugar (c) uracil (d) adenine.

Description : DNA synthesis can be specifically measured by estimating the incorporation of radio-labelled (a) thymidine (b) deoxyribose sugar (c) uracil (d) adenine.

Last Answer : (c) uracil

Genetic code consists of (a) adenine and guanine (b) cytosine and uracil (c) cytosine and guanine (d) all of these.

Description : Genetic code consists of (a) adenine and guanine (b) cytosine and uracil (c) cytosine and guanine (d) all of these.

Last Answer : (d) all of these.

DNA synthesis can be specifically measured by estimating the incorporation of radio-labelled (a) thymidine (b) deoxyribose sugar (c) uracil (d) adenine.

Description : DNA synthesis can be specifically measured by estimating the incorporation of radio-labelled (a) thymidine (b) deoxyribose sugar (c) uracil (d) adenine.

Last Answer : (a) thymidine

Which one of the following structural formulae of two organic compounds is correctly identified along with its related function?(a) B : Adenine - A nucleotide that makes up nucleic acids (b) A : Triglyceride - Major source of energy (c) B : Uracil - A component of DNA (d) A : Lecithin - A component of cell membrane

Description : Which one of the following structural formulae of two organic compounds is correctly identified along with its related function? (a) B : Adenine - A nucleotide that makes up nucleic acids (b) A : Triglyceride - ... ) B : Uracil - A component of DNA (d) A : Lecithin - A component of cell membrane

Last Answer : (d) A : Lecithin - A component of cell membrane