In working with a potentially new antibiotic, you are attempting to determine where in prokaryotic translation this antibiotic has its effect. You have determined thus far that it interacts with a translational factor but need to identify which one. If this antibiotic interfered with elongation, which of the following factors could be a potential site of action?
A) IF3 interaction with an aminoacyl tRNA
B) EF-Tu placement of N-formylmethionine onto the ribosome
C) EF-Tu interaction with an aminoacyl tRNA
D) EF-Ts translocation of tRNAs from the A site to the P site
E) all of the above
C) EF-Tu interaction with an aminoacyl tRNA
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The structure indicated by the letter "C" above
represents a. actin. b. myofibril. c. myosin. d. myofilament. e. muscle fiber
What makes up most of the mass of an individual mushroom?
a. underground ascocarp b. underground mycelium c. above ground ascocarp d. above ground mycelium e. underground fruiting body
All of the following characteristics are necessary for a structure to be classified as a primitive cell except
A. a boundary separating the cell from its watery surroundings. B. DNA. C. an ability to obtain energy from its surroundings. D. macromolecules.
A mistake happens during the cell cycle of a given cell, and it is allowed to enter the M phase directly from the G1 phase, skipping the S and G2 phase. What would you expect to be wrong with this cell at the beginning of mitosis?
a) The cell would have 1/2 the amount of DNA it should have. b) The cell would have 2x the amount of DNA it should have. c) The chromatids would not separate properly and one daughter cell would have more chromosomes than it should. d) The cell is considered haploid instead of diploid.