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Schach [20]
2 years ago
8

A prokaryote is most likely to use which of the following modes of metabolism to release energy if it is in an environment witho

ut oxygen, dies when exposed to oxygen, and uses fermentation? A. Obligate anaerobe B Heterotroph C. Facultative anaerobe D. Photoautotroph
Biology
2 answers:
Anni [7]2 years ago
5 0
It's letter A - Obligate anaerobe.

<em>Obligate anaerobes</em> are microorganisms killed by normal atmospheric concentrations of oxygen. A <em>facultative anaerobe</em> prefers to produce energy in the presence of oxygen but can survive without it. <span>A <em>photoautotroph </em>is an organism that converts light energy into chemical energy. </span><span>Prokaryotes may perform </span>aerobic<span> (oxygen-requiring) or </span>anaerobic<span> (non-oxygen-based) metabolism and some can switch between these modes. Since we're talking about an environment without oxygen and dies when exposed to oxygen, the preferable answer is A.</span>
Licemer1 [7]2 years ago
3 0

the answer is B. OBLIGATE anaerobe. it is the only one that is poisoned by oxygen. if you want to see for yourself just type into google (obligate anaerobe)  Took the test and got a 100% :)

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Answer:

The correct answers are: B) Catalase works best at human body temperature, C) Normal human body temperature is 98.6°F, which equals 37°C.

Explanation:

Catalase is an enzyme found in our bodies that has the important task of <u>breaking down hydrogen peroxide</u>, a molecule that is very toxic. For catalase to work at its optimus speed, it need the body to have a temperature of 37° celsius -98.6°F-, which is what we normally call <em>human body temperature</em>. If the temperature rises or falls below body temperature, catalase will still work but at a much slower rate, until it stops working completely.

Not all enzymes work best at human body temperature, some enzymes reach their optimus state at higher or lower temperatures; but it is important to remember that enzymes are proteins, and proteins denaturalize when the temperature becomes to high, making them lose their shape and function.

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