The structure of DNA is a double helix formed by two strands of DNA sequence. This sequence consists of 4 different nucleotides- Adenine, Thymine, Cytosine and Guanine. How do the nucleotides on one strand interact with the nucleotides on the second strand to maintain the helical shape of DNA?

The structure of DNA is a double helix formed by two strands of DNA sequence.
This sequence consists of 4 different nucleotides- Adenine, Thymine, Cytosine and
Guanine. How do the nucleotides on one strand interact with the nucleotides on the
second strand to maintain the helical shape of DNA?
by

1 Answer

Answer :

Complementary Base Pairing.
Adenine complementary base pairs with Thymine and Guanine complementary base
pairs with Cytosine.
by

Related questions

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

Which of the following statement(s) is/are true concerning DNA? a. DNA is contained only in the nucleus of the cell b. DNA strands are encoded by the sequence of four bases—adenine, guanine, cytosine and uridine c. The basic unit of information of DNA is the intron, a sequence of three bases d. There are an infinite number of possible codons

Description : Which of the following statement(s) is/are true concerning DNA? a. DNA is contained only in the nucleus of the cell b. DNA strands are encoded by the sequence of four bases-adenine, guanine, cytosine ... DNA is the intron, a sequence of three bases d. There are an infinite number of possible codons

Last Answer : Answer: a The genetic blueprint of an organism is carried in the nucleus of every cell, encoded by the sequence of four bases-adenine, guanine, cytosine and thymine, which together make up ... codons. Sixty-one of these code for amino acids and three are termination signals called stop codons

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

n the DNA molecule, (a) the proportion of adenine in relation to thymine varies with the organism (b) there are two strands which run anti- parallel-one in 5′ → 3′ direction and other in 3′ → 5′ (c) the total amount of purine nucleotides and pyrimidine nucleotides is not always equal (d) there are two strands which run parallel in the 5′ → 3′ direction.

Description : n the DNA molecule, (a) the proportion of adenine in relation to thymine varies with the organism (b) there are two strands which run anti- parallel-one in 5′ → 3′ direction and other in 3′ → ... is not always equal (d) there are two strands which run parallel in the 5′ → 3′ direction.

Last Answer : (b) there are two strands which run anti- parallel-one in 5′ → 3′ direction and other in 3′ → 5′

Which two of the following four bases in DNA are purine bases? a) adenine b) thymine c) cytosine d) guanine

Description : Which two of the following four bases in DNA are purine bases? a) adenine b) thymine c) cytosine d) guanine

Last Answer : ANSWER: A and D -- ADENINE and GUANINE

Which two of the following four bases in DNA are pyrimidine (pron: pie-rim-eh-den) bases? a) cytosine b) thymine c) adenine d) guanine (pron: gwa - neen)

Description : Which two of the following four bases in DNA are pyrimidine (pron: pie-rim-eh-den) bases? a) cytosine b) thymine c) adenine d) guanine (pron: gwa - neen)

Last Answer : ANSWER: A and B -- CYTOSINE and THYMINE

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

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

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

DNA molecules are composed of deoxyribonucleotides of (a) Adenine and guanine (b) Adenine, guanine and cytosine (c) Adenine, guanine, cytosine and thymine (d) None of the above

Description : DNA molecules are composed of deoxyribonucleotides of (a) Adenine and guanine (b) Adenine, guanine and cytosine (c) Adenine, guanine, cytosine and thymine (d) None of the above

Last Answer : Ans:(c)

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

What are adenine guanine cytosine and thymine?

Description : What are adenine guanine cytosine and thymine?

Last Answer : Cytosine thymine guanine and adenine are the nitrogenous bases found in the nucleotides that form DNA.DNA is made up of 3 parts:(1)Phosphate group(2)Deoxyribose(3)Nitrogen containing base.Complimentary ... of adenine->thymine Guanin -> cytosine and visa/versa. In RNA thymine is replaced with uracil

What are adenine guanine cytosine and thymine?

Description : What are adenine guanine cytosine and thymine?

Last Answer : Cytosine thymine guanine and adenine are the nitrogenous bases found in the nucleotides that form DNA.DNA is made up of 3 parts:(1)Phosphate group(2)Deoxyribose(3)Nitrogen containing base.Complimentary ... of adenine->thymine Guanin -> cytosine and visa/versa. In RNA thymine is replaced with uracil

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

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

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

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

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.

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

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.

The telomeres of eukaryotic chromosomes consist of short sequences of (a) thymine rich repeats (b) cytosine rich repeats (c) adenine rich repeats (d) guanine rich repeats.

Description : The telomeres of eukaryotic chromosomes consist of short sequences of (a) thymine rich repeats (b) cytosine rich repeats (c) adenine rich repeats (d) guanine rich repeats.

Last Answer : (d) guanine rich repeats.

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

The most likely lethal mutation is (A) Substitution of adenine for cytosine (B) Insertion of one nucleotide (C) Deletion of three nucleotides (D) Substitution of cytosine for guanine

Description : The most likely lethal mutation is (A) Substitution of adenine for cytosine (B) Insertion of one nucleotide (C) Deletion of three nucleotides (D) Substitution of cytosine for guanine

Last Answer : Answer : B

If the total amount of adenine and thymine in a double stranded DNA is 45% the amount of guanine this DNA will be `:`

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%`

RNA is composed of strands of nucleotides that are read as a 3 nucleotide codon. These are distinguished by tRNAs that match the codons on one end and carry individual building blocks of a protein chain. What are these building blocks of protein that tRNAs bind?

Description : RNA is composed of strands of nucleotides that are read as a 3 nucleotide codon. These are distinguished by tRNAs that match the codons on one end and carry individual building blocks of a protein chain. What are these building blocks of protein that tRNAs bind?

Last Answer : Amino Acids

.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.

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.

During transcription, do both strands of DNA get transcribed into a double stranded RNA molecule?

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.

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

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.

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

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 is NOT a base in DNA? w) uracil x) guanine y) adenine z) cytosine

Description : Which of the following is NOT a base in DNA? w) uracil x) guanine y) adenine z) cytosine

Last Answer : ANSWER: W -- URACIL

A segment of DNA has 120 adenine and 120 cytosine bases. The total number of nucleotides present in the segment is (a) 120 (b) 240 (c) 60 (d) 480.

Description : A segment of DNA has 120 adenine and 120 cytosine bases. The total number of nucleotides present in the segment is (a) 120 (b) 240 (c) 60 (d) 480.

Last Answer : (d) 480.

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 helix, cytosine is paired with guanine by

Description : In DNA helix, cytosine is paired with guanine by

Last Answer : In DNA helix, cytosine is paired with guanine by A. covalent bond B. phosphate bond C. three hydrogen bonds D. two hydrogen bonds

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

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

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

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

Following nuclestides are called pyrimidine a. adenine b. guanine c. cytosine d. all

Description : Following nuclestides are called pyrimidine a. adenine b. guanine c. cytosine d. all

Last Answer : cytosine

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) The enzyme cuts DNA molecule at identified position within the DNA. (c) The enzyme binds DNA at specific sites and cuts only one of the two strands. (d) The enzyme cuts the sugar-phosphate backbone at specific sites on each strand.

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.

Given below is a sample of a portion of DNA strand giving the base sequence on the opposite strands. What is so special shown in it? 5′ _____ GAATTC _____ 3′ 3′ _____ CTTAAG _____ 5′ (a) Replication completed (b) Deletion mutation (c) Start codon at the 5′ end (d) Palindromic sequence of base pairs

Description : Given below is a sample of a portion of DNA strand giving the base sequence on the opposite strands. What is so special shown in it? 5′ _____ GAATTC _____ 3′ 3′ _____ CTTAAG _____ 5′ (a) ... completed (b) Deletion mutation (c) Start codon at the 5′ end (d) Palindromic sequence of base pairs

Last Answer : (d) Palindromic sequence of base pairs

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

Following nucleotides are called purines a. adenine b. guanine c. both d. none

Description : Following nucleotides are called purines a. adenine b. guanine c. both d. none

Last Answer : both

The unwound strands of DNA are held apart by (A) Single strand binding protein (B) Double strand binding protein (C) Rep protein (D) DNAA protein

Description : The unwound strands of DNA are held apart by (A) Single strand binding protein (B) Double strand binding protein (C) Rep protein (D) DNAA protein

Last Answer : Answer : A

The two strands of the DNA double helix are held together by (a) Hydrogen bonds (b)C=C double bonds (c) Hydrophobic bonds (d) Peptide bonds

Description : The two strands of the DNA double helix are held together by (a) Hydrogen bonds (b)C=C double bonds (c) Hydrophobic bonds (d) Peptide bonds

Last Answer : Ans:(a)

In double helix of DNA, the two DNA strands are (a) coiled around a common axis (b) coiled around each other(c) coiled differently (d) coiled over protein sheath.

Description : In double helix of DNA, the two DNA strands are (a) coiled around a common axis (b) coiled around each other (c) coiled differently (d) coiled over protein sheath.

Last Answer : (a) coiled around a common axis