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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 11 IB.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    What is the result of semi-conservative DNA replication?

    A.

    Two DNA molecules, each with two brand-new strands

    B.

    Two DNA molecules, each with one original strand and one new strand

    C.

    One DNA molecule with two original strands and one with two new strands

    D.

    Four DNA molecules, each with a mix of old and new segments

  2. 2.

    Which of these is a known type of non-coding DNA that produces functional RNA molecules like tRNA?

    A.

    RNA genes

    B.

    Introns

    C.

    Telomeres

    D.

    Exons

  3. 3.

    Which enzyme is responsible for proofreading the newly synthesized DNA strand and correcting errors?

    A.

    DNA Polymerase III

    B.

    DNA Helicase

    C.

    DNA Ligase

    D.

    DNA Primase

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 11 IB.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    What is the term for chemicals that diffuse through embryonic tissue to control the expression of genes based on their concentration?

    A.

    Morphogens

    B.

    Enzymes

    C.

    Antigens

    D.

    Antibodies

  2. 2.

    If the sense strand of DNA has the sequence 5′−ATG−3′5'-ATG-3', what will the mRNA sequence be?

    A.

    5′−UAC−3′5'-UAC-3'

    B.

    5′−AUG−3′5'-AUG-3'

    C.

    5′−TAC−3′5'-TAC-3'

    D.

    5′−GUA−3′5'-GUA-3'

  3. 3.

    During which phase of gene expression are introns actually removed?

    A.

    During DNA replication

    B.

    After the mRNA leaves the nucleus

    C.

    During post-transcriptional modification

    D.

    During translation at the ribosome

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 11 IB.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    What is the term for the sequence of three bases on a tRNA molecule?

    A.

    Codon

    B.

    Anticodon

    C.

    Triplet

    D.

    Intron

  2. 2.

    Which stage of translation involves the assembly of the mRNA, the first tRNA, and the ribosomal subunits?

    A.

    Initiation

    B.

    Elongation

    C.

    Termination

    D.

    Translocation

  3. 3.

    Which part of the cell provides the pool of free amino acids for translation?

    A.

    Nucleoplasm

    B.

    Cytoplasm

    C.

    Mitochondrial matrix

    D.

    Inside the Golgi apparatus

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

Nucleic Acids (AHL) - IB Grade 11 Biology Notes & Revision | Krit.club