(4) The processes that make ATP and glucose also recycle oxygen in Earth's atmosphere.
a. statements 1, 2, and 3 only
b. statement 1 only
c. All 4 statements are correct
Selected as incorrect:d. statements 2 and 3 only
The correct answer is c. All 4 statements are correct.
Statement 1: The processes that make ATP and glucose (which include cellular respiration and photosynthesis) recycle oxygen in Earth's atmosphere. This is true because both cellular respiration and photosynthesis use and release oxygen during their respective processes.
Statement 2: Cellular respiration in animals and humans involves the breakdown of glucose to produce ATP and releases carbon dioxide as a byproduct. This is true because in cellular respiration, glucose is broken down in the presence of oxygen, and carbon dioxide is released as a waste product.
Statement 3: Photosynthesis in plants and some other organisms involves the conversion of carbon dioxide and water into glucose and releases oxygen as a byproduct. This is true because during photosynthesis, plants take in carbon dioxide and water and, with the help of sunlight, convert them into glucose, releasing oxygen as a waste product.
Statement 4: The recycling of oxygen in Earth's atmosphere is crucial for the survival of aerobic organisms, as they require oxygen for cellular respiration. This is true because aerobic organisms, including animals and humans, require oxygen for the process of cellular respiration, which is essential for generating ATP (the energy currency of cells). Without the recycling of oxygen, the oxygen levels in the atmosphere would decrease, leading to a lack of oxygen for aerobic organisms.