In bacteria, a unique RNA that binds the A site of the ribosome and directs the addition of approximately 12 amino acids to the nascent peptide when no stop codon is present is called the ________
Fill in the blank with correct word.
Answer: tmRNA or transfer messenger RNA
You might also like to view...
The 5' upstreamregions of transcriptionally active genes generally donot exhibit which of the following characteristics?
A. contain binding sites for known regulatory proteins B. relatively fewer nucleosomes C. increased in vitro sensitivity to DNase I D. increased concentration of histone H1
Which of the following best describes fertilization in the fern life cycle?
a. Pollen is blown by the wind to a female cone, where it forms a pollen tube that grows toward where the egg will form. b. Flagellated sperm swim in a film of water on the surface of the plant to reach an egg. c. Flagellated sperm are blown by the wind to a location near an egg, and then swim through plant fluids to reach the egg. d. Flagellated sperm swim through plant fluids to reach an egg. e. Flagellated sperm attach to the moist skin of certain animals and are transferred to the surface of the plant to reach an egg.
The Gram stain separates bacteria based on _________.
A) the charge of the cell (either positive or negative) B) the presence or absence of nuclei C) differences in the structure of the cell wall
The function of chymotrypsin is to:
A) synthesize proteins. B) break down proteins into amino acids. C) synthesize glycogen. D) break down glycogen into glucose.