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. O 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.

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. O 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.

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

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What role does bonding play in DNA? Where are hydrogen bonds located? Where are covalent bonds located? Why is that significant to the overall structure and function of DNA
A double-stranded molecule of DNA has 80 T nucleotides and 110 G nucleotides. What is the TOTAL number of nucleotides in this molecule of DNA? O 80 O 110 O 160 O 190 220 O 380
DNA structure depends on base pairing of its four nucleotides, A, C, T, and G. Nucleotide A pairs with T, and nucleotide C pairs with G. This forms a four-letter DNA “alphabet." Because DNA codes for amino acids in sets of three nucleotides, there are 4 cubed (4'), or 64, possible combinations, coding for 20 different amino acids. What is the best explanation for why there is no selective advantage for DNA to have five nucleotides (e.g., A, C, T, G, and E) with C pairing with either G or functionally equivalent E? It would be impossible to form the DNA molecule, because it must have an equal number of Cs and Gs. Because G and E have the same role, there would still be four functional letters of the alphabet. Replication would be inaccurate because sometimes C would bond with G and sometimes C would bond with E. There would be a five-letter alphabet with 125 combinations, which is too numerous. It is impossible because there are not five known nucleotides in the cell.
Name the four nitrogenous bases that form a DNA molecule.
Which of the following statements is true of double stranded DNA? The chains have a backbone of linked bases. Unless the DNA is circular, the 3'OH groups of each chain are at opposite ends of the molecule The planes of the bases lie parallel to the helix axis. The double stranded structure is stabilized only by hydrogen bonding,
Cytosine makes up 15% of the nucleotides in a sample of DNA from an organism. Approximately what percentage of the nucleotides in this sample will be thymine? 30% 35% 85% O 70%
Describe the structure of DNA as repeated units of nucleotides that consist of nitrogenous bases, sugar and phosphate.
Which of the following sequences is the best description of the complementary DNA sequence to the following sequence: 5'-CGATTAGC-3' Group of answer choices 5'-GCTAATCG-3' 5'-GCUAAUCG-3' 3'-CGATTAGC-5' 3'-GCUAAUCG-5' 3'-GCTAATCG-5'
Indicate if the following statements are true for DNA, RNA, both, or none. Your answers should be one of the following 4 words: DNA, RNA, the word both if the statement applies to both DNA and RNA, or the word none if the statement does not apply to either DNA or RNA. Are nucleic acids The nucleotides are attached using alternating sugars and phosphates Is double stranded Uses the nucleotide uracil Can be found in both the nucleus and the cytoplasm Uses the nucleotide thymine Uses the sugar ribose Uses the sugar deoxyribose
Show the replication strands in each of these bubbles (note they have different DNA orientations). Label each end of each DNA strand and include arrows to show which direction it is extending. Show the Okazaki fragments in the correct places. 3' 5'
Using the figure below, which end of the double helix,"A" or "B", would be considered the 5 prime end? B (type "A" or "B" in the blank) Which of the following statements would best explain your reasoning for question 1? 1 (type 1, 2 or 3 in the blank) The end of the DNA strand with the phosphate exposed is the 5 prime end The end of the DNA strand that shows the five carbon sugar pointing down is the 5 prime end The end of the DNA strand with the fifth carbon on the sugar molecule is the 5 prime end
In your own words describe the various types of bonds that are found in the structure of DNA and the roles they play in stabilizing the DNA molecule. Describe the chemical nature of the DNA molecule as best as you can.