A1.2 NUCLEIC ACIDS HL READING QUIZ IB BIO KR

Which nitrogenous base pairs with adenine in DNA?

• Guanine
• Thymine
• Cytosine
• Uracil

What is the significance of 5' to 3' linkages in DNA and RNA?

• Translation
• Replication
• Transcription
• All of the above

What is the structure of a nucleosome?

• DNA wrapped around a core of twelve histone proteins
• DNA wrapped around a core of four histone proteins
• DNA wrapped around a core of eight histone proteins
• DNA wrapped around a core of sixteen histone proteins

What is the diversity of possible DNA base sequences?

• Limited
• Moderate
• High
• Infinite

What did Chargaff's data on the relative amounts of pyrimidine and purine bases in DNA falsify?

• The triplet code hypothesis
• The chromosomal theory of inheritance
• The tetranucleotide hypothesis
• The central dogma hypothesis

What is the equal length of purine-to-pyrimidine pairs in DNA?

• Uracil–adenine (U–A)
• Guanine–cytosine (G–C)
• Adenine–thymine (A–T)
• Cytosine–guanine (C–G)

Which shape is used to represent the phosphate group in a nucleotide diagram?

• Circle
• Triangle
• Rectangle
• Pentagon

How many strands are present in DNA?

• 4
• 1
• 2
• 3

What is RNA formed by?

• Ionic bonding of nucleotide monomers
• Condensation of nucleotide monomers
• Hydrogen bonding of nucleotide monomers
• Hydrolysis of nucleotide monomers

What does the conservation of the genetic code across all life forms suggest?

• Independent evolution
• Parallel evolution
• Convergent evolution
• Universal common ancestry