BIO 181 QUIZ 1 BIOMOLECULES AND CHEMISTRY OF LIFE MODULE QUESTIONS SOLUTIONS ORGANIC COMPOUNDS STUDY GUIDE 2026

BIO 181 QUIZ 1 BIOMOLECULES AND
CHEMISTRY OF LIFE MODULE QUESTIONS
SOLUTIONS ORGANIC COMPOUNDS
STUDY GUIDE 2026

◉ Gene expression regulation
Answer: Control of the timing and amount of protein synthesis.


◉ mRNA
Answer: Messenger RNA that carries genetic information.


◉ Nucleotide addition
Answer: Nucleotides are added to the 3′ end of RNA.


◉ tRNA
Answer: Transfer RNA that carries specific amino acids.


◉ Amino acid
Answer: Organic compound serving as building blocks of proteins.


◉ Codon

, Answer: Three-nucleotide sequence on mRNA coding for amino acid.


◉ Aminoacyl-tRNA synthetase
Answer: Enzyme matching tRNA with its corresponding amino acid.


◉ Wobble pairing
Answer: Flexible base pairing at third codon position.


◉ Ribosomal subunits
Answer: Large and small components made of rRNA and proteins.


◉ P site
Answer: Holds tRNA with growing polypeptide chain.


◉ A site
Answer: Holds tRNA carrying the next amino acid.


◉ E site
Answer: Exit site for discharged tRNA from ribosome.


◉ Translation initiation
Answer: Process assembling mRNA, tRNA, and ribosomal subunits.