Question 1
Which of the following is NOT a target of drugs that inhibit protein synthesis?
◦ the enzymatic site of the 50S ribosomal subunit
◦ interference with alanine-alanine bridges
◦ the shape of the 30S ribosomal subunit
◦ movement of the ribosome from one codon to the next
◦ the tRNA docking site
Question 2
Figure 10.1 represents a Petri plate. The gray area is where bacteria A is growing, the black area is where bacteria B is growing. The white area is a zone where neither organism is growing. What is the best interpretation of what is observed on the plate?
◦ Bacterial colony B has depleted the nutrients in the area around the colony.
◦ Bacteria A grows faster than bacteria B.
◦ Bacteria B is producing an antibiotic that inhibits the growth of bacteria A.
◦ Bacteria A produces a compound that inhibits the growth of bacteria B.
◦ No conclusion can be made from this information.
Black Norwegian Elkhound
black swallower
Regions of the abdominopelvic area
Explaining “Moving Continents”— The Theory of Plate Tectonics
A chest X-ray showing pneumonia characterized by the patch of gray-white areas.
What Drives Plate Motion