Which of the following statements about the DNA is FALSE? O DNA occurs in the form of double stranded molecules. O The DNA double helix is stabilized by H bonds, electrostatic interactions, and the hydrophobic interactions arising from base-pair stacking. O The DNA double helix has a major groove and a minor groove. O Adenine and Thymine base pairs consist of 2 H-bonds measured at around 2.8 and 3.0 angstroms. O Cytosine and Uracil base pairs consist of 3 H-bonds measured at around 2.9 and 3.0 angstroms.

Which of the following statements about the DNA is FALSE? O DNA occurs in the form of double stranded molecules. O The DNA double helix is stabilized by H bonds, electrostatic interactions, and the hydrophobic interactions arising from base-pair stacking. O The DNA double helix has a major groove and a minor groove. O Adenine and Thymine base pairs consist of 2 H-bonds measured at around 2.8 and 3.0 angstroms. O Cytosine and Uracil base pairs consist of 3 H-bonds measured at around 2.9 and 3.0 angstroms.

Human Heredity: Principles and Issues (MindTap Course List)

11th Edition

ISBN:9781305251052

Author:Michael Cummings

Publisher:Michael Cummings

Chapter8: The Structure, Replication, And Chromosomal Organization Of Dna

Section: Chapter Questions

Problem 19QP: RNA is ribonucleic acid, and DNA is deoxyribonucleic acid. What exactly is deoxygenated about DNA?

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RNA is ribonucleic acid, and DNA is deoxyribonucleic acid. What exactly is deoxygenated about DNA?
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
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 of the following is/are the fundamental difference/s between RNA and DNA? O the sugars only O bases, ribose units, and the phosphodiester linkage O bases, ribose units, and the glycosidic bond type bases and the ribose units only
What provides the negative charge associated with DNA? O The phosphate groups O The nitrogenous bases O The deoxyriboses O The sulfhydryl groups O The riboses
In the sugar molecule on a nucleotide, which of the following is correct in regards to how a DNA nucleotide can be differentiated from an RNA nucleotide? O the 2' Carbon on the sugar molecule is different between DNA and RNA nucleotides O the 3' Carbon on the sugar molecule is different between DNA and RNA nucleotides O the phosphate on the 5' carbon of the sugar molecule is different in both DNA and RNA nucleotides O the covalent bonds between nucleotides on DNA are different than RNA nucleotides
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 combinations is nucleotide molecule? The nitrogenous base uracil bonded to ribose and phosphate complemented with the addition of a water molecule A nucleoside resulting from the dehydration reaction between two phosphates, glycerol, and an unsaturated fatty acid. The DNA backbone consisting of three phosphate groups, a 5-carbon nitrogenous base, and a nitrogen-containing sugar residue An ATP molecule is formed by combining adenine, ribose, and three inorganic phosphate groups
Examine the 5'- 3 sequence of bases of the DNA molecules (A D) shown below. I am only showing you the 5 - 3' strand of each molecule, but you can imagine the complementary 3' - 5' strand for each molecule. Which double-stranded molecule is held together by 10 hydrogen bonds? O AAAT O ATAG O TGTC O GCGA
Which of the following changes occur with a double-stranded DNA if it is heated to 95 C at neutral pH? OA Increase in the absorption of uitraviolet light at 260 nm OB. Unwinding of the helical DNA structure Oc Separation of the two DNA strands Do.Hydrolysis of the N-glycosidic bond belween the base and deoxyribose DE Breakage of the phosphodiester bonds belwean adjacent ucieotides Dr. Breakage of the hydrogen bonds between guanines and cytidines.
As a result of the rotation about its six bonds, DNA can exist in a variety of forms. Determine whether the image and properties describe the A form of DNA, the B form of DNA, the Z form of DNA, or all three. A form G pairs with C, and A pairs with T. antiparallel strands A HOCH₂ OH most stable under physiological conditions B form Answer Bank has a 23.7 Å helix diameter widest helix diameter Z form left-handed narrowest helix diameter the favored form of dehydrated DNA All The C2' of deoxyribose is out of the plane of the other ring atoms in the direction of 05'.