NURSING ANM AND GNM

NURSING EXAM QUESTIONS

MICROBIOLOGY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
“Cyanobacteria are the only photosynthetic prokaryotes able to produce oxygen”. True or False?
A
True.
B
False.
C
Either A or B
D
None of the above
Explanation: 

Detailed explanation-1: -Cyanobacteria are globally widespread photosynthetic prokaryotes and are major contributors to global biogeochemical cycles. They are the only oxygenic photosynthetic prokaryotes, and prosper in diverse and extreme habitats.

Detailed explanation-2: -These microbes possessed the remarkable ability to perform photosynthesis, (i.e., they could generate energy from sunlight). Cyanobacteria possessed the machinery to utilize water as a fuel source by oxidizing it. More significantly, the by-product of photosynthesis happened to be oxygen.

Detailed explanation-3: -The answer is tiny organisms known as cyanobacteria, or blue-green algae. These microbes conduct photosynthesis: using sunshine, water and carbon dioxide to produce carbohydrates and, yes, oxygen.

Detailed explanation-4: -Cyanobacteria, previously known as blue-green algae, are photosynthetic microorganisms that are abundant in nature. Some cyanobacteria have been consumed by humans for centuries while others are known for their toxicity. The initial metabolic products of photosynthesis are sugar phosphates.

There is 1 question to complete.