Part 1 Single Best Choice Questions (401 point=40 pts)Instruction: (1) Mark the letter that corresponds to the right answer in the formatted ANSWER SHEET with 2B PENCIL. Since the marks are read by computer, answers in this question sheet will not be collected. (2) For one question, only one letter is permitted to be darkened, otherwise, it will be recognize as wrong by the computer. (3) Do not forget to mark your student ID number and write in your name.1. Bacteria that lack cell walls
