Question

traditional NCLEX question format. A 67-year-old patient with severe sepsis undergoes a full infectious workup upon admittance to the intensive care unit. Cultures of urine, blood, sputum, and cerebral spinal fluid are obtained. The cultures do not yield a specific organism, so further analysis of the sample is done to determine the characteristics of the microorganism. The organism's metabolic processes are analyzed in the lab. The organism sample is further tested and found to grow in the absence of oxygen. Which of three main pathways of catabolism may this organism utilize to produce energy under these circumstances? a) Anaerobic respiration and aerobic respiration b) Aerobic respiration and fermentation c) Fermentation and anaerobic respiration d) Aerobic respiration, anaerobic respiration, and fermentation

Answer 1

Correct answer: option c

Rational:

Anaerobic respiration also called as fermentation, occur when the cell need energy but there is no oxygen for aerobic respiration, as a result the cell convert glucose into ethanol and lactic acid.

So option c is correct.

Option a: aerobic respiration needs oxygen and anaerobic Respiration does not need oxygen.

So its incorrect.

Option b: its also incorrect, because it does not use oxygen for respiration. So its incorrect.

Option d: it also incorrect.