Becker's World of the Cell 9th Edition by Lewis Kleinsmith, Jeff Hardin, Gregory Paul Bertoni

تمرين 8

Wrong Again. For each of the following false statements, change the statement to make it true, and explain why it was false:
(a)Proteins, nucleic acids, polysaccharides, and lipids are all very long polymers that are synthesized by condensation of individual monomer units.
(b)The amino acid proline is not found in a helices because its R group is too large to fit into the helix.
(c)While a protein can be denatured by high-temperature treatment, extremes of pH generally have no effect on tertiary structure.
(d)Nucleic acids are synthesized from monomers that are activated by linking them to a carrier molecule in an energy-requiring reaction.
(e) -D-glucose and -D-glucose are stereoisomers.
(f)Fatty acids are important components of all cellular lipids.
(g)It is easy to predict the final folded structure of a protein from its amino acid sequence using todays powerful supercomputers.
(h)Most cells contain only three types of RNA: mRNA, tRNA, and rRNA.