allery**Ribozymes** are:
ADNA molecules with enzymatic activity
BCatalytic RNA molecules — evidence for RNA World hypothesis
CProtein enzymes that synthesise RNA
DDNA-binding proteins
Answer & Solution
Correct answer: B. Catalytic RNA molecules — evidence for RNA World hypothesis
Ribozymes are catalytic RNAs (e.g. self-splicing introns in *Tetrahymena*, RNase P, ribosomal peptidyl transferase).
Discovered independently by Altman and Cech (Nobel Prize 1989).
Their existence strongly supports the RNA-World hypothesis.
Keep practising Unit 5C: Non-Mendelian Genetics & Population Transmission
Browse all Unit 5C: Non-Mendelian Genetics & Population Transmission questions for AP Biology, or explore more Biology topics.
Related questions
Which of the following is **not** a stop codon?The semiconservative nature of DNA replication was experimentally proved by:The F₂ **genotypic** ratio in Mendel's monohybrid cross is:In Mendel's monohybrid cross between true-breeding tall (TT) and dwarf (tt) plants, the F₂Mendel conducted his hybridisation experiments on which plant?In the Watson-Crick double helix, adenine pairs with thymine via how many hydrogen bonds?In birds, the sex-determination mechanism is:Down syndrome in humans is caused by