ladder structure double helix purine base pyrimidine base phosphate deoxyribose base pair double helix structure
The following is what part of DNA? phosphate O purine O pyrimidine deoxyribose
The two helices in the DNA double helix are held together by a) bonding between sugar and phosphate groups. b) the overlap of a purine base on one helix with a purine base on the other helix. c) the overlap of a pyrimidine base on one helix with a pyrimidine base on the other helix. d) hydrogen bonding between deoxyribose units. e) hydrogen bonding between a base on one helix and its complementary base on the other helix.
Question 7 What is the structure of DNA at the level above the nucleotide? Ladder-like double helix with sugar phosphate backbone forming the rungs of the “ladder” Single-stranded helical structure with sugar phosphate backbone connecting individual nucleotides Single-stranded helical structure with complementary base pairs connecting individual nucleotides Ladder-like double helix with complementary base pairs forming the rungs of the “ladder”
What is the consequence of a transition mutation in double-stranded DNA? A purine is replaced by another purine, or a pyrimidine is replaced by another pyrimidine. A base pair is lost within the DNA of a gene, which causes a reading frameshift. The parent, but not its offspring, will be affected by the mutation. A base pair is added to the DNA within a gene, which causes a reading frameshift. A purine is replaced by a pyrimidine, or a pyrimidine...
Need some help with these questions Redraw the pyrimidine base next to the paired purine base in the 1^st box and show the H-bonding that exisst in the DNA double helix. The structures are given for you in the second box. Which of the following is the structure of vitamin A? Place a square. Ninhydrin reagent reacts with alpha-amino acids to give a purple color. In the reaction ofninhydrin with phenylalanine, which of the following is responsible for this color?...
Question 27 А. consists of a sugar, an organic base, and phosphate(s). purine nucleoside O nucleotide base-pair Question 28 The variable portion of DNA is the sequence of what? O ribose O deoxyribose ООО Ophophate nitrogen bases
1. Describe how the structure of DNA (double helix and base pair rule) is correlated with its role as the molecular basis of inheritance and uniqueness. 2. Discuss how this correlation (above) allows scientists to use DNA for the following area: You will describe DNA technology in the "medical field".
DNA is formed by building blocks called __________. nucleotides nitrogenous bases polypeptides deoxyribose 0.5 points QUESTION 2 What does DNA stand for? Double-stranded Nucleic Acid Ribonucleic acid Deoxyribonucleic Acid Double-helix Nucleic Acid 0.5 points QUESTION 3 The nucleotides of DNA are held together by ___________. ionic bond hydrogen bond phosphodiester bond sugar-phosphate backbone 0.5 points QUESTION 4 DNA nucleotides with one-carbon nitrogen ring bases are called ________. adenines purines pyrimidines guanines 0.5 points QUESTION 5 Basic...
In a double stranded DNA region, number of purine equals number of pyrimidine Select one: True O False