An 82 year old man was hospitalized for pneumonia. He was treated with penicillin and discharged after
7 days when his symptoms subsided. Two weeks later, the man was readmitted to the hospital for prem
nin. No bacteria or viruses were cultured from a biopsy specimen. Broad-spectrum antibiotic therapy w
administered. The patient developed pneumonia again after returning home from an 8-day hospital stay
A bronchoscopy showed septate hyphae in his lung tissue. An investigation of his home showed that he did
not keep pets, but some sparrows had nested outside the living room window, he was not a gardener or out
doorsman. Aspergillus was cultured from his humidifier,

a. What is your preliminary identification of the pathogen?
b. Why was the diagnosis delayed?
c. Why did the man's infection recur?

correct answer is option a.

tropopause, stratopause and mesopause have all in common aspect that is point of maximum temperature in its layer of the atmosphere. all layers of atmosphere observe abrupt change in temperature. tropopause is the boundary between troposphere and stratosphere. stratopause is the boundary between stratosphere and mesosphere. mesopause is the boundary between mesosphere and thermosphere. these all boundaries are ranges between altitude of 0 to 80 km.

the answer is c. it will give up it's valence electron to the other atom.

photosynthesis makes the glucose that is used in cellular respiration to make atp. the glucose is then turned back into carbon dioxide, which is used in photosynthesis. while water is broken down to form oxygen during photosynthesis, in cellular respiration oxygen is combined with hydrogen to form water.

above statement is not a true statement about the open ocean because the open ocean has low levels of nutrients. most of the photosynthetic activity on earth occurs in the open ocean within the photic zone. organisms in the deep ocean are exposed to frigid temperatures and total darkness but it does not begin at the low-tide mark.