Which of the following accurately describes the structure of the DNA molecule? contains four bases adenine, guanine, cytosine, and thymine consists of two strands of nucleotides twisted into a double helix has a sugar phosphate backbone and complementary base- pairing in its interior O all the above

Which of the following accurately describes the structure of the DNA molecule? contains four bases adenine, guanine, cytosine, and thymine consists of two strands of nucleotides twisted into a double helix has a sugar phosphate backbone and complementary base- pairing in its interior O all the above

Name: 2 Which of the following accurately describes the structure ofthe DNA
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Description: 2 Which of the following accurately describes the structure ofthe DNA molecule?contains four bases adenine, guanine, cytosine, and thymineconsists of two strands of nucleotides twisted into a doublehelixhas a sugar phosphate backbone and complementar

Biology Today and Tomorrow without Physiology (MindTap Course List)

5th Edition

ISBN:9781305117396

Author:Cecie Starr, Christine Evers, Lisa Starr

Publisher:Cecie Starr, Christine Evers, Lisa Starr

Chapter6: Dna Structure And Function

Section: Chapter Questions

Problem 5SQ

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One species DNA differs from others in its _______. a. nucleotides c. double helix b. DNA sequence d. sugar-phosphate backbone
Which is not a nucleotide base in DNA? a. adenine b. guanine c. glutamine d. thymine e. cytosine f. All are in DNA.
Which of the following is true about DNA ? * Two DNA strands are twisted around each other to form an anti-parallel double helix Adenine pairs with thymine though 2 hydrogen bonds (A=T) Guanine pairs with cytosine through 3 hydrogen bonds (GEC). O All of them
Which of the following statements regarding DNA is false? Features a beta glycosidic bond between deoxyribose and nucleobase. Phosphoester bonds in DNA are extremely stable to non-catalytic hydrolysis. In B DNA the parallel stacks of nucleobases are separated by about 3.5 A A DNA is formed from single strands of RNA and DNA DNA contains uridine, adenosine, guanosine, and cytidine as nucleobases.
Which of the following statements about the DNA double helix is FALSE? O The base pairs are located in the center of the helix O The plane of the base pairs is perpendicular to the direction of the deoxyribose- phosphate backbone O The two strands have the same 5' to 3' direction (i.e, are parallel) O The base pairs stack on one another O The deoxyribose-phosphate backbone is on the outside of the helix
Which statement most accurately describes the ‘backbone’ of DNA? Group of answer choices The DNA strand is wound up around histone groups which gives the backbone structure to the chromosome The sugar group from a nucleotide is connected to the next sugar group via a phosphate group The hydrogen bonds between nucleotides are quite strong and provide structure to DNA. Adenine and Thymine, and Guanine and Cytosine are linked together
Which of the following statements about the structure or composition of DNA is FALSE? O DNA is a double helix Complementary base-pairing occurs between pyrimidine and purine bases O The amount of thymine closely approximates that of guanine within a particular organism O The base-pairing is mediated by hydrogen bonding O Adenine pairs with thymine and guanine with cytosine
The following are components of DNA, except for: nitrogen-containing base phosphate group deoxyribose sugar all of the above none of above
Why is DNA not RNA the storage for genetic information? O DNA is double stranded in its structure while RNA is usually single stranded. O DNA is helical in structure while RNA is usually linear. O DNA has the pyrimidine base thymine while RNA has uracil instead. O None of the above. DNA has no 2'-hydroxyl group while RNA contains 2'-hydroxyl group.
Which of the following correctly describes the structure of DNA? strands of phosphate-nitrogen backbone, which complementary nitrogenous base pairs bound in a double helix strands of sugar-nitrogen backbone, with complementary deoxyribose base pairs bound in a double helix strands of phosphate-sugar backbone, with complementary nitrogenous base pairs bound in a double helix strands of phosphate-sugar backbone, with complementary nitrogenous base pairs bound in a single helix
Which of the following properties applies to DNA structure? Contains A, C, G, and U base pairs Single stranded Contains the sugar deoxyribose Has an extra hydroxyl (OH) group on the 2' carbon of the sugar
All the following statements about DNA are true, EXCEPT: O DNA is a double-helix, consisting of a sugar-phosphate backbone. O DNA is made up on nucleotides, which consist of one sugar, one phosphate, and one base. O DNA consists of 4 bases - adenine, uracil, cytosine, and guanine. The two main functions of DNA are to replicate itself and to create proteins (by providing the template for protein synthesis). O The sugar in DNA is deoxyribose.