BIO 205-Exam 2-2017-previous Exam used-harford community college-Microbiology (GL) (BIO), Exams of Biology

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BIO 205 - Exam Two Multiple Choice Identify the choice that best completes the statement or answers the question. These questions will only have one answer. Each of these twenty questions is worth 3.5 points. Lo 1 wv oR op Which of the following enzymes is responsible for removing the supercoiling fram DNA by unwinding it, so it can be replicated? a. Topoisomerase (Gyrase) Ligase RNA Polymerase DNA Polymerase Primase pape This drug is commonly used to treat systemic fungal infections. It disrupts their cell membranes. Amphotericin B Penicillin Gramicidin Bacitracin Pyocyanin capo Fungi that can be multicellular or unicellular are: Basidiomycetes Molds Dimorphic Fungi Zygomycetes Yeasts 4. Which of the following statements is correct about the archaea? a b. c. d. Archaea can have a bacillus or cocus structure like the bacteria. Archaea can produce enterotoxins that cause Gl tract diseases. Archaea have the same ribosome structure as bacteria. Archaea have a nucleus like eukaryotes. 5. Which of the following is incorrect about protein synthesis? a b. c. d. The ribosome is made of proteins and rRNA The small subunit of the ribosome binds mRNA. The tRNA molecules enter the ribosome at the E site. The amino acids are always linked together at the P site of the ribosome 6. Sulfa drugs prevent the formation of Ro op The cell wall. Folic acid Bacteriochlorophyll. The cell membrane Small ribosomal subunits (30S)