Eukaryotic mRNA molecules may contain noncoding sequences that must be removed before translation. These are called
A. anticodons.
B. noncodons.
C. introns.
D. exons.
E. nucleosomes.
Answer: C
You might also like to view...
Which of the following are products of nonstructural genes, and are therefore never translated?
A. transfer RNA B. ribosomal RNA C. messenger RNA D. transfer RNA and ribosomal RNA E. ribosomal RNA and messenger RNA
Evolutionary adaptations that help diverse animals directly exchange matter between cells and the environment include _____
A) a gastrovascular activity, a two-layered body, and a torpedo-like body shape B) an external respiratory surface, a small body size, and a two-cell-layered body C) a large body volume, a long, tubular body, and a set of wings D) an unbranched internal surface, a small body size, and thick covering
Minicells result from mutations that
a. prevent DNA replication. b. prevent septum formation. c. prevent growth of the cell. d. prevent chromosome partitioning. e. cause septa to be formed in the wrong place or to be formed too frequently.
Hornworts differ from mosses and liverworts in containing
A. spores. B. gametophytes. C. sporophytes. D. photosynthetic sporophytes. E. small leaves.