6. What is the difference between aerobic and anaerobic respirations? A. Aerobic respiration ends with different products while the same product results in anaerobic respiration. B. Proteins are the main respiratory substrate for both aerobic and anaerobic respiration. C. Glycolysis is the first pathway for aerobic while Kreb's cycle is for anaerobic respiration. D. Aerobic respiration produces much more energy than anaerobic respiration. 7. Which one of the following statements disproves spontaneous generation theory based on a step wise experimental work? A. Life is an inherent property of the universe and everlasting. B. Different life forms on the Earth were created by a supreme being within six days. C. Life has reached to the Earth in the form of spores with falling meteorite. D. Both macro and micro-organisms could arise from pre-existing organisms.
Answer (1)
Let’s look at the differences between aerobic and anaerobic respiration based on the options given:
A. Aerobic respiration ends with different products while the same product results in anaerobic respiration. - This statement is partially correct because aerobic respiration typically ends with carbon dioxide and water, while anaerobic respiration can result in different products like lactic acid or ethanol and carbon dioxide depending on the organism. However, it does not fully express the distinction in terms of energy production which is more critical.
B. Proteins are the main respiratory substrate for both aerobic and anaerobic respiration. - This is incorrect. The primary substrates are carbohydrates in most cases, specifically glucose. Proteins are only used when carbohydrates and fats are unavailable.
C. Glycolysis is the first pathway for aerobic while Kreb's cycle is for anaerobic respiration. - This is incorrect. Glycolysis occurs in both aerobic and anaerobic respiration. However, the Krebs cycle (citric acid cycle) is a part of aerobic respiration and not anaerobic respiration.
D. Aerobic respiration produces much more energy than anaerobic respiration. - This statement is correct. Aerobic respiration produces more ATP (energy) than anaerobic respiration, which is a critical difference between the two processes.
Therefore, the correct answer is D. Aerobic respiration produces much more energy than anaerobic respiration.
Let’s analyze the statements that challenge the spontaneous generation theory based on experimental evidence:
A. Life is an inherent property of the universe and everlasting. - This is more philosophical and does not provide a step-wise scientific disproof of spontaneous generation.
B. Different life forms on the Earth were created by a supreme being within six days. - This is a creationist belief and not based on step-wise scientific methods.
C. Life has reached to the Earth in the form of spores with falling meteorite. - This is a hypothesis (panspermia) about how life could have originated on Earth but does not address spontaneous generation.
D. Both macro and micro-organisms could arise from pre-existing organisms. - This statement is correct as it relates to Pasteur's experiments, which showed that life does not spontaneously arise from non-living matter but from other life forms, effectively disproving spontaneous generation.
Therefore, the correct answer is D. Both macro and micro-organisms could arise from pre-existing organisms.
