9. As a by-product of photosynthesis, what percentage of the Earth\'s atmosphere
ID: 277467 • Letter: 9
Question
9. As a by-product of photosynthesis, what percentage of the Earth's atmosphere is oxygen? A) 31 percent B) 21 percent 41 percent D) 10 percent E) 50 percent 10. Plants make ATP during the light reactions of photosynthesis. Why do plants also need to carry out the process of cellular respiration? A) B) C) D) The ATP made during photosynthesis is different from the ATP made during cellular respiration Plants need to make ATP from cellular respiration only when the conditions for photosynthesis are bad The ATP made during photosynthesis is only enough to fuel the dark reactions. The plant has to carry out cellular respiration to make ATP for other metabolic activities Plants do not need to perform cellular respiration. 11. During glycolysis, a glucose molecule is split into two, three-carbon molecules A) Acetyl CoA B) Pyruvic acid C) ATP D) Oxloacetatic acid E) NADPH 12. How much ATPs are produced during anaerobic respiration (Not reviewed)? A) Three B) Two C) Zero D) One E) FourExplanation / Answer
9) The correct option is B. 21 percent.
As a by product of photosynthesis 21% of earth’s atmosphere is oxygen. The atmosphere of earth contains 21 % O2 and about 0.04 % carbon dioxide.
10) The correct option is C. the ATP made during photosynthesis is only enough to fuel the dark reactions. The plants carry out cellular respiration to make ATP for other metabolic activities.
11) The correct option is B. Pyruvic acid.
Glycolysis is the process of splitting a glucose molecule into 2 pyruvic acid molecules.
12) The correct option is B. Two.
Cellular respiration is an anaerobic or aerobic respiration. It depends on oxygen is present or not. Anaerobic respiration makes a total of 2 ATP.
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.