Answer:
Breathing is the process of exchange of carbon dioxide and oxygen between the body and the environment. The exchange of gases depends upon the partial pressure of oxygen.
When the individual hold its breath, the amount of oxygen level in the body gets decreased. This increases the carbon dioxide level in the body. The increase in the carbon dioxide level reduces pH and increase the hydrogen ions in the body. The biocarbonate levels in the body also increases.
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The choices can be found elsewhere and as follows:
a. membranes lower the activation energy of biochemical reactions.
<span>b. reactants are within close proximity to each other. </span>
<span>c. membrane-bounded organelles act as catalysts for biochemical reactions. </span>
<span>d. reactants move faster within membrane-bounded organelles. </span>
<span>e. reactants are less likely to encounter each other within membrane-bounded organelles. </span>
The correct answer is option C. Membrane bounded organelles facilitate faster chemical reactions because it <span>act as catalysts for biochemical </span>reactions. Hope this answers the question.
A facultative anaerobe.
Explanation:
Anaerobes are organisms which can produce energy via the process of fermentation in the absence of oxygen. The anaerobes can be classified as facultative anaerobes and obligate anaerobes.
Facultative anaerobes are those which can carry out respiration in presence of oxygen but can choose to follow the fermentation pathway if oxygen is absent. Fermentation also uses glucose.
Aerobic respiration produces 32 molecules of ATP from one molecules of glucose while fermentation produces only 2 molecules of ATP . Thus when the organism switches to fermentation pathway it utilizes more and more glucose to reach its energy demands.
Considering all the above points we can conclude that observations indicate that the organism is a facultative anaerobe.
