he best definition of an endonuclease is that it hydrolyzes A. nucleotide from only the 3' -end of an oligonucleotide . B. nucleotide from either terminal of an oligonucleotide. C. phosphodiester bond located in the interior of a polynucleotide . D. bond only in a specific sequence of nucleotides. E. bond that is distal co the base chat occupies the 5' position of the bond

he best definition of an endonuclease is that it hydrolyzes A. nucleotide from only the 3' -end of an oligonucleotide . B. nucleotide from either terminal of an oligonucleotide. C. phosphodiester bond located in the interior of a polynucleotide . D. bond only in a specific sequence of nucleotides. E. bond that is distal co the base chat occupies the 5' position of the bond

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 15QP: Using Figures 8.7 and 8.9 as a guide, draw a dinucleotide composed of C and A. Next to this, draw...

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Ethidium Bromide is a chemical reagent that has been used to detect the presence of nucleic acids. It is known to fluoresce under UV light and the intensity of the fluoresence increases when it binds to the nucleic acids. Ethidium Bromide binds to polynucleotides a by binding directly to the bases on one of the strands. b by intercalating itself between the base pair stacks. c through the negatively charged phosphate groups. d through the hydroxyl group of the sugar molecule.
Which of the following statements is correct? A. The 3’-end of a DNA double helix implies that both strands of the DNA helix have a free 3’- hydroxyl group on that end. B. DNA can form double helix while RNA cannot form double helix. C. Both A and B. D. Neither A nor B. The role of serine at the active site of serine proteases is to act as a(n) ________ catalyst, while the histidine residue serves as a(n) ________ catalyst. A. weak; strong B. acid-base; covalent C. anionic; ionic D. covalent; acid-base E. strong; weak
what does it mean to say that trends in a double helix is antiparallel? A. They each have a sugar-phoshate backbone. B. They each have a 5'-3' directionality (or polarity). C. They have opposite directionalty in terms of relative positions of 5' and 3' ends.
Draw the structure of each dinucleotide and identify the 5 'and 3 ' ends. a. the deoxyribonucleotide formed by joining two deoxyguanosine 5 '-phosphates together b. the ribonucleotide formed by joining the 5 '-phosphate of UMP with the 3 '-OH of AMP
Using Figures 8.7 and 8.9 as a guide, draw a dinucleotide composed of C and A. Next to this, draw the complementary dinucleotide in an antiparallel fashion. Connect the dinucleotides with the appropriate hydrogen bonds. FIGURE 8.9 The two polynucleotide chains in DNA run in opposite directions. The left strand runs 5 to 3, and the right strand runs 3 to 5. The base sequences in each strand are complementary. An A in one strand pairs with a T in the other strand, and a C in one strand is paired with a G in the opposite strand. FIGURE 8.7 Nucleotides can be joined together to form chains caled polynucleotides. Polynucleotides are polar molecules with a 5 end (at the phosphate group) and a 3 end (at the sugar group). An RNA polynucleotide is shown at the left, and a DNA polynucleotide is shown at the right.
The following is diagram of a generalized tetranucleotide. Carbons exist at corners on the shapes and phosphate groups are filled circles. A. Is this a DNA or an RNA Molecule? B. Where is the 3’ end of this tetranucleotide? C. Given that the DNA strand which served as a template for the synthesis of this tetranucleotide was composed of the bases 5’-ACAG-3’, where are the expected bases?
Which of the following would explain the formation of double-stranded loops in tRNA? A. complementary base pairing B. steric interactions between the aromatic rings of the purine bases C. electronic interactions between the negatively-charged phosphate groups D. change in the conformation of the rings of the sugars
Much of the stability of the double-stranded DNA structure is the result of.... A. the angle of the planes of the bases with respect to the helix axis.B. the phosphodiester backbone.C. hydrogen bonding between purines. D. the stacking interactions between base pair. E. Both C and D
Which one of these indicated groups or bonds:hydroxyl; phosphate; triphosphate; nitrogen base; phosphodiester bond; hydrogen bond; is present in each of the followingcases: (a) The 3' position of the last nucleotide added to the leading strand.(b) The 5' position of the first nucleotide of a RNA primer.(c) The 5' position of the first deoxyribonucleotide incorporated into an Okazaki fragment.(d) The 3' position of the last nucleotide of the RNA primer in an Okazaki fragment.(e) The 5' position of any of the deoxyribonucleotides before incorporation.
Draw the dinucleotide CU. Show structures of the bases
Which of the following statements is/are TRUE about wobble base pairing? a. Explains why there are 64 codons but less than 64 tRNAs. b. Codons for an amino acid differ in their 1st base. c. Several tRNAs can bind to more than one anticodon. d. Can minimize damage caused by misreading of the code.
Which of the following conventions is used to specify the sequence of bases in DNA a) The sequence begins with the nucleotide that has a free 3' terminus b) The sequence begins with the nucleotide that has a free 5' terminus c) The sequence begins from the end closest to the first adenine d) The sequence begins from the end closest to the first thymine