40 Meda can br nwk with commerts thrt will allow certintseteria togon bat will i

Question

40 Meda can br nwk with commerts thrt will allow certintseteria togon bat will irtibt dren from growing Such a med um is a A selective medum B, defined medium C. n differential rredium D a solid agar mediurn 4i-Chemolitotraphs organisme A axidi ze inorgarie iors such as ritrate or iron to obtain energy B. contain photoeynthetic pigments that convert solar energy into cherrical erergy derive their energy needs from ?gnc mecules by fermentation or restration D. derive their energy from photosynthesis but their carbon reeds from growth on orgeric molecules 42- The exoaporium found in endospores is composed of A. peptidoglycan 8. prctein C phospholipids D. nane of the above 43-Endospores are commonly produced by becteria in the genus A BaalluS 8. Clastridium C Mycotacterium D. Both (A) and (B) 44- Which of the following sentences is/are true about endospores? A. Endospores allow bacteria to survive environmental B. Their resistance is due in part to the fact they have a thick endospore coat C They are resistant to heat, radations, acitk, and d sinfectants D Endospores represent a dorment stage E. All of the above sertences are true i condtions that are not favorable for 45 Some bactenia derive energy by in the abeence of ox ygen. These bacteria are A. facutative anaerobes B microaerophiles oxidative respiration if oxygen is present but are capable of using fermentation C, aerotolerant arganisms D obligate araerobes 46-Streptococci belong to the group of A. facultative anaerobes C. aerotderant organisme B. microeerophi les 47- Which of the following enzymes are found in aerobic bacteria? D. obligate anaerobes B, superoxide dismrase C peraxichse D, all of the above 48- When transferring bacteria from one tube to anather, it is important to flame the mouth of the tube because a) it helps avoid contarrination b) one gets to play with the Bunsen burner c) it helps seal the test tube correctly d) none of the above 49- A basic dye used to stain E. coW is a) eosin b) Ind a ink c) methylene blue d) nane of the above S0-E. cali is a gam poutive coccus C gram positive rod 8. gram regative coccus D. gram negative rod Pant B 1 How do Saph and Strep differ. State 2 ways 2 How dd the MSA medum help us idenvtify S ares? 3 From whet three sources did we attempt to isolate S aureu? 4 What is the difference betwen alpha and beta hemolysis of blood cells?

Explanation / Answer

The following answers are correct

40) A

41) A

42) D

43) A

44) E

45) A

46) A

47) A

48) A

49) D

50)D

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