The tertiary structure of proteins is coiling and sheet formation of the polypeptic True False 2. Facilitated diffusion requires and enzyme True Faise 3. mRNA is the transcript of DNA. True False 4. Each codon codes for an amino acid. True False 5. Osmosis only occurs in the presence of a semipermeable membrane. True False 6.One functional gene can produce thousands of different proteins. True False 7. In a typical enzymatio reaction, the enzyme is used up by the reaction. True False 8. RNA is single-stranded. True False