50. Which of the following codons functions as a stop codon in translation, and what amino acid does it encode? (A) UGG; tryptophan (B) UAA; leucine (C) UGA; no amino acid (D) AUG; methionine

1. Which of the following is NOT a distinctive property of living systems? (A) Living organisms exhibit a high level of organization. (B) Biological structures are related to specific functions. (C) Living systems have the capacity for reproduction. (D) Living systems do not carry out energy transformation.