Question

An organism grows in a container that contains no oxygen and no exposure to sunlight. which process does this organism rely on to produce most of its atp molecules? o a. alcohol fermentation � b. electron transport chains � c. photosynthesis o d. glycolysis

Answer 1

The organism relies on glycolysis and fermentation to produce ATP, as both processes are anaerobic and do not require oxygen.

Step-by-step explanation:

The organism that grows in an environment with no oxygen and no exposure to sunlight most likely relies on glycolysis followed by a process called fermentation to produce ATP molecules. Fermentation is an anaerobic process, meaning it does not require oxygen, and it allows for the regeneration of NAD+, which is necessary for glycolysis to continue.

There are two main types of fermentation: alcohol fermentation and lactic acid fermentation. In alcohol fermentation, pyruvate from glycolysis is converted into ethanol and carbon dioxide, while in lactic acid fermentation, pyruvate is reduced to form lactate. Both of these processes start with glycolysis, which can produce a net gain of 2 ATP molecules per glucose molecule without the need for oxygen.

Therefore, the correct answer to the question is glycolysis, as it is the initial step in the process of fermentation that some organisms use to produce ATP anaerobically.

Answer 2

The organism in an oxygen-free and sunlight-free environment relies on alcohol fermentation to produce most of its ATP molecules, which starts with glycolysis, an anaerobic process that does not require oxygen. So the correct option is a.

Step-by-step explanation:

The organism in the container is not exposed to oxygen or sunlight, so it cannot rely on photosynthesis or aerobic respiration to produce ATP. However, organisms can produce ATP in the absence of oxygen by a process called fermentation. In particular, alcohol fermentation and lactic acid fermentation are two types of fermentation that can occur. Both start with the process of glycolysis, which is the breakdown of glucose into pyruvate, producing a small amount of ATP in the process. Since both types of fermentation begin with glycolysis and do not require oxygen, they are suitable for the organism to produce ATP under the given conditions. Therefore, the correct answer is alcohol fermentation.

In essence, since neither oxygen nor sunlight is available, the organism must rely on anaerobic processes to continue producing ATP, and alcohol fermentation is one such anaerobic process that can produce ATP in the absence of oxygen by converting pyruvate from glycolysis into ethyl alcohol and carbon dioxide, while simultaneously regenerating NAD+.