9. In an experiment (C-14) sugar studying photosynthesis, you provide a plant wi
ID: 209204 • Letter: 9
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9. In an experiment (C-14) sugar studying photosynthesis, you provide a plant with radioactive carbon ar olocide as a metabolic tracer. The C-14 is incorporated first into a four-carbon a. Hetat nihe plant is best characterized as a (3 p c. C4 plant d. C3 plant e. CAM plant 10. The Calvin Cycle uses energy from 1 p) a. sugar and water b. breaking bonds between carbon dioxide ATP and NADPH c. electrons it captures d. 11. True / False: When comparing electron transport chains (ETC), In cellular respiration and photosynthesis in cellular respiration the electrons passed through the ETC come from reduced electron carriers (e g NADH), whereas in photosynthesis the electrons come from oxidation of water. (1 pt) 12. Write the overall photosynthesis reaction (don't worry about balancing it) and indicate whether each product is "reduced" or "oxidized" during the reaction. (3 pts) 13. When you burn fat for fuel in your body, where does the carbon go? (1 pt) a. How does that carbon make its way back into food that you might later eat? (1 pt) 14. Bonus: Formation of the ozone layer likely played a critical role in the evolution of a. ozone is a powerful greenhouse gas that allows the earth to warm, which multicellular life because (2 pts) multicellular life required b. ozone is required for the recycling of genetic material (e.g. DNA) c ozone significantly cooled the planet, thus encouraging cellular cooperation that evolved into multicellular life d ozone reduces the amount of UV radiation that reaches the earth's surface preventing DNA damageExplanation / Answer
9. C3
10. (D)
11. TRUE
12.
The process of cell respiration also depends heavily on the reduction of NAD+ to NADH and the reverse reaction (the oxidation of NADH to NAD+). Photosynthesis and cellular respiration are complementary, but photosynthesis is not the reverse of the redox reaction in cell respiration:
6 CO2 + 6 H2O + light energy C6H12O6 + 6 O2
Biological energy is mainly kept and released by means of redox reactions. Photosynthesis involves the reduction of carbon dioxide into sugarsand the oxidation of water into molecular oxygen. Intermediate steps, the reduced carbon compounds helps in reducing nicotinamide adenine dinucleotide (NAD+) to NADH, which contributes to the creation of a proton gradient, which drives the synthesis of adenosine triphosphate (ATP) and is maintained by the reduction of oxygen.
13.
When we burn a molecule of triglyceride, the predominant fat in a human body:
C55H104O6+78O2 —> 55CO2+52H2O+energy
We can say that oxidizing 10 kilos of human fat requires inhaling 29 kilos of oxygen to produce 28 kilos of carbon dioxide and 11 kilos of water
Carbon dioxide is a common gas in the atmosphere, so it's we can predict where it goes
Yes, we exhale lost fat.
It helps plants in photosynthesize
14. (a)
(D)
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