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Nucleic Acids (AHL)

Each subtopic includes About section, revision page link, 10 preview questions, and practice CTAs.

DNA structure and replication

Subtopic

DNA structure and replication under Nucleic Acids (AHL) for Grade 12 IB.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    What is the function of DNA profiling using satellite DNA?

    A.

    To determine the sequence of a specific protein

    B.

    To identify individuals based on repetitive sequences

    C.

    To repair damaged DNA strands

    D.

    To measure the rate of DNA replication

  2. 2.

    Which of the following is true about the Hershey-Chase experiment?

    A.

    Proteins entered the bacteria

    B.

    DNA entered the bacteria

    C.

    Both protein and DNA entered the bacteria

    D.

    Neither protein nor DNA entered the bacteria

  3. 3.

    What is the primary role of introns?

    A.

    They are sequences that are translated into proteins

    B.

    They are non-coding sequences within a gene

    C.

    They help to terminate DNA replication

    D.

    They are the building blocks of ribosomes

Download the worksheet for Nucleic Acids (AHL) - DNA structure and replication to practice offline. It includes additional chapter-level practice questions.

Transcription and gene expression

Subtopic

Transcription and gene expression under Nucleic Acids (AHL) for Grade 12 IB.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    What describes the relationship between nucleosome spacing and gene expression?

    A.

    Close spacing increases expression

    B.

    Wide spacing decreases expression

    C.

    Wide spacing increases accessibility for transcription

    D.

    Spacing has no relationship with expression

  2. 2.

    Which of the following is the first product produced by transcription in eukaryotes before any processing?

    A.

    Mature mRNA

    B.

    pre-mRNA

    C.

    tRNA

    D.

    rRNA

  3. 3.

    What is the function of the spliceosome?

    A.

    To replicate DNA

    B.

    To remove introns from pre-mRNA

    C.

    To add a poly-A tail

    D.

    To transport mRNA to the cytoplasm

Download the worksheet for Nucleic Acids (AHL) - Transcription and gene expression to practice offline. It includes additional chapter-level practice questions.

Translation

Subtopic

Translation under Nucleic Acids (AHL) for Grade 12 IB.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    Which end of the mRNA is the ribosome closest to when it begins translation?

    A.

    3' end

    B.

    5' end

    C.

    The poly-A tail

    D.

    The middle codon

  2. 2.

    Which part of the cell is NOT involved in the journey of a protein intended for secretion?

    A.

    Bound ribosomes

    B.

    Golgi apparatus

    C.

    Lysosomes

    D.

    Endoplasmic reticulum

  3. 3.

    What is the name of the process where a polypeptide is produced from an mRNA template?

    A.

    Transcription

    B.

    Translation

    C.

    Transduction

    D.

    Transformation

Download the worksheet for Nucleic Acids (AHL) - Translation to practice offline. It includes additional chapter-level practice questions.