WHAT IS LIFE? ACHIEVE ACCESS 1 TERM
5th Edition
ISBN: 9781319360702
Author: PHELAN
Publisher: INTER MAC
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Chapter 3, Problem 10MC
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Which of the following are pyrimidines?
Select one:
A.
adenine and thymine
B.
cytosine and thymine
C.
adenine and guanine
D.
adenine and cytosine
E.
guanine and thymine
Considering the principle of complementary base pairing, you would expect an equal ratio of which two nitrogenous bases in a DNA molecule?
a.
guanine and thymine
b.
uracil and adenine
c.
thymine and cytosine
d.
cytosine and guanine
e.
adenine and guanine
Identify the base and sugar in each of the following nucleotides:
A. CMP
B. dAMP
C. dTMP
D. UMP
Chapter 3 Solutions
WHAT IS LIFE? ACHIEVE ACCESS 1 TERM
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- Which of the following is the correct way that heterocyclic bases are paired between two polypeptide chains of DNA? a. Pyrimidines-Pyrimidines b. Purine-Pyrimidine c. Purines-Purine d. Sugar-Phosphatearrow_forwardWhich of the following nitrogenous bases is found in RNA but not in DNA? A. Thymine B. Cytosine C. Uracil D. Adeninearrow_forwardWhich of the following is the monomeric unit of DNA. A. Nucleotides B. Deoxyribose C. Nitrogenous bases D. Phospatearrow_forward
- An analysis of the bases in DNA present in body cells gave the following results: W units/g X units/g Y units/g Z units/g 31 45 45 31 The correct identification of each base would be: W Y Z A. adenine guanine B. cytosine adenine C. guanine D. thymine Select one: a. C b. D c. B d. A X thymine guanine thymine cytosine cytosine guanine cytosine thymine adenine adeninearrow_forwardN C N HC C GH CH N H Which base normally pairs with this structure: a. Thymine b. Adenine c. Cytosine d. Guaninearrow_forwardWhich of the following statements about DNA is true? (Select all that applied) Select one: a. DNA contains thymine but not uracil. b. DNA molecules contain deoxyribose. c. All of these d. In a double-stranded DNA molecule, adenine on one strand will be connected to thymine on the complementary strand by two hydrogen bonds.arrow_forward
- Which of the following is NOT one of the four nucleic acids? A. Deoxyine B. Guanine C. Cytosine D. Adeninearrow_forwardDraw the two dipeptides formed from each pair of amino acids. a. tyrosine and lysine b. threonine and glutamine c. alanine and histidinearrow_forwardA nucleotide is composed of all of the following excepta. 5-carbon sugar. c. 6-carbon sugar.b. nitrogen base. d. phosphate grouparrow_forward
- In Watson and Crick's model of DNA structure, the two strands of the DNA double helix are joined through a. Ionic bonds b. Hydrophobic interactions c. Covalent bonds d. Disulfide bonds e. Hydrogen bondsarrow_forwardWhich of the following is true about the structure of nucleotides? A. Purine nucleotides cannot base pair with pyrimidine nucleotides. B. Pyrimidine bases are larger than purine bases. C. Purine and pyrimidine bases are found in DNA and RNA. D. Thymine base is found in DNA and RNA.arrow_forward(1) A scientist discovers an unknown nucleic acid, they analyze it chemically and discover the following: 22% of the nitrogenous bases contain adenine, 40% contain guanine, 20% contain thymine and 18% contain cytosine. Based only on this information, this nucleic acid must be: a. Single-Stranded DNA b. Single-stranded RNA c. Double-Stranded DNA d. Double- stranded RNA (2) In a double-stranded molecule of DNA which of the following ratios should equal 1? (pick 3) a. A/C b. (A+T) / (G+C) c. (A+G) / (C + T) d. purines/ pyrimidines e. G/C (3) why is DNA replication is said to be bidirectional ?arrow_forward
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