Question

please correct #34-40 with extra explanation for #36 that was hard for me to answer

34. Superoxide dismutase is an enzyme used by many organisms to detoxify oxygen free radicals, by-products from oxygen metabolism. Enterococcus is a genus of aerotolerant anaerobes.From what you know of oxygen use and bacterial metabolism, you would expect species of Enterococcus to have_ superoxide dismutase activity. a. very high ( b. Jow c.no d. not enough information e. none of these 35. These bacteria can continue to grow in the refrigerator because they grow best at lower temperatures. a. halophiles b. mesophiles c. methanogens a psychrophiles e. thermophiles 36. Cheese, alcoholic beverages, soy sauce, and vinegar are all products of which process: a. electron transport chain b. fermentation c. anaerobic respiration d. all of these e. none of these 37. Helicobacter pylori grow best in the lawer oxygen content found in the stomach. This bacterium is an example of a/an: a. microaerophile b. obligate aerobe c. facultative anaerobe d. obligate anaerobe e. aerotolerant anaerobe The following questions are from the parasite video. 38. What system does the filarial worm or nematode that causes elephantiasis affect? a, respiratory 6. digestive cardiovascular Md. Nymphatice all these are directly affected 39. What is the most common vector for parasitic infectious diseases such as malaria, filariasis, zika, West Nile virus and many others? a. birds b. flies c. pigs d. humans (Keyosquitoes wiede 40. This type of parasitic microbe caused damage to the musician's cornea resulting in blindness in that eye. The microbe, called Acanthamoeba, s a eukaryote and lacks a cell wall. a, fungus b.protozoan c. worm d. bacteria e. virus

Answer 1

Note: Only the first four parts/questions can be answered at once. Therefore, the first four MCQs are answered along with proper explanations.

Question 34:

Answer: Option B. Low

Explanation:

Enterococcus tests oxidase-negative therefore it has low to almost no superoxide dismutase activity.

Question 35

Answer: Option D. psychrophiles

Explanation:

Bacteria which can grow at the range of -5^oC to 30^oC temperatures with optimum temperatures of about 10^oC - 20^oC are called psychrophiles.

Question 36.

Answer: Option B. Fermentation.

Explanation: (very detailed )

The products like cheese, alcoholic beverages, soy sauce, Vinegar are the result of fermentation. The fermentative process leads to their formation. the other options like ETC and Anaerobic respiration are common in these but they are not the reason for the formation of these products.

Without fermentation, we can not obtain cheese, alcoholic beverages, soy sauce, Vinegar. Therefore, fermentation is the sole process responsible for the making of these products.

Question 37

Answer: Option A. microaerophile

Explanation:

Helicobacter pylori is a gram-negative, helically-shaped, microaerophilic bacterium, Microaerophiles can tolerate only sub-atmospheric oxygen levels. They are aerotolerant anaerobes. The other options are incorrect as per the conditions stated in the question.