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![Which of the following statements is/are TRUE about DNA?
I. Adenine and uracil are complementary base pairs.
II. Franklin and Wilkins deduced the structure of DNA.
III. The base sequence is read from 5' to 3' direction.
O Both I and III
O III only
O Both II and III
O I only](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F8c30e66a-3856-4050-b97d-4d8ccb5f2fbd%2F50f4b8d4-2426-4faa-a3f3-c00a385469db%2Fbveybff_processed.png&w=3840&q=75)
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- What are the base-pairing rules for DNA? a. A-G, T-C c. A-T, G-C b. A-C, T-G d. A-A, G-G, C-C, T-TOne species DNA differs from others in its _______. a. nucleotides c. double helix b. DNA sequence d. sugar-phosphate backboneThe amount of guanine nitrogenous bases equal the amount of, in a DNA double helix. Select one: O a. Thymine O b. • Adenine Ос. Uracil O d. Cytosine
- The nucleotides within DNA are composed of a Group of answer choices A sulfur group, ribose sugar, and nitrogenous base. B phosphate group, ribose sugar, and nitrogenous base. C sulfur group, deoxyribose sugar, and nitrogenous base. D phosphate group, hexose sugar, and nitrogenous base. E phosphate group, deoxyribose sugar, and nitrogenous base.Which of the following is not a difference between DNA and RNA? a. DNA contains thymine whereas RNA contains uracil b. DNA contains deoxyribose and RNA contains ribose c. DNA contains alternating sugar-phosphate molecules whereas RNA does not contain sugars d. RNA is single stranded and DNA is double strandedWhat distance separates base-pairs in the Watson-Crick model of DNA? 2.3Å O 3.4Å 4.5Å 5.6Å
- A double-stranded molecule of DNA contains 120 cytosine (C) bases and 80 adenine (A) bases. How many nitrogenous bases does this molecule contain all together? O 80 100 O 120 O 200 400Why are nucleobases in nucleic acids called "bases"? 1. Because they resemble baseball bases 2. They are fundamental to "hodling up" the DNA structure (like the base of a building holds up the rest of the building) 3. They are the "command center" of the cell. Like the "base" of operations for armed forces in a war. 4. They are hydrogen ion acceptors, like other chemical basesFranklin's X-ray crystallography work provided which of the following regarding the structure of DNA? (more than one answer may be correct so check all that apply) A It had a helical structure with more than one strand A complete helical turn is made after 20 bases O It replicates in a semi-conservative manner Purines are paired with pyrimidines
- Rosalind Franklin's discovery that DNA has a diameter of 2nm meant that nucleotides must pair with each other in which pattern? Purine to purine Purine to pyrimidine Pyrimidine to pyrimidine There is no pattern; any nucleotide can pair with any other nucleotideWhich of the following statements is correct A Adenine and cytosine are pyrimidines Adenine and guanine are both purines. Adenine is a purine and uridine is a pyrimidine D Thymidine is a pyrimidineIf a double stranded DNA molecule is 20% thymine, what are the percentages of all other bases? 1. Adenine 2. Guanine 3. Cytosine
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