e. function most efficiently at low temperatures. 12. O, that is produced during
ID: 275624 • Letter: E
Question
e. function most efficiently at low temperatures. 12. O, that is produced during photosynthesis is derived from: ?.?.? b. CO. c. CH20 d. HS e. ATP 13. Sulfur contains 16 protons. How many electrons will it have in its second energy shel? d 10 14. How many electrons must be added to make sulfur maximally stable? d 10 e 16 15. The end product of glycolysis is: a. acetyl CoA b. lactate c. Citric acid d. pyruvate e. ethanol. 16 Denaturation of an enzyme (a protein) by heating does which of the following? a. renders it ineffective by changing its natural shape b. enhances its performance c. reduces its d. nothing, all remains the same energy of motion 17. When carbon atoms are lost from molecules during respiration, they are given off in the form of a. methane gas b. carbon dioxide c. carbon atoms d. pyruvic acid e. molecular oxygen 18. In order for life to exist on earth, even today, entropy (the tendency for molecules to become disordered) must be overcome. The ultimate source of energy to keep the molecules of living things ordered, and therefore alive, comes from: a. fossil fuels b. heat in the earth's core c. wind energy d. heterotrophic organisms e. the sunExplanation / Answer
12)-option a is correct because oxygen comes from splitting of water.
13)-option c is correct because after first shell she second shell have maximum of 8 electrons.
14)-option a is correct because if we add 2 more electrons the third shell is completely filled.
15)-option d is correct because in glycolysis glucose is converted into pyruvate.
16)-option a is correct because denaturation break the protein structure.
18)-option e is correct because plants obtain energy from sun to synthesize food.
20)--option d is correct because ATP provide energy to initiate other reaction.
21)-option a is correct because shortest wavelength carry most energy.
22)--option a is correct because it is the most common molecule in cell.
24)-option d is correct because in hydrolysis we add water to break large molecule.
25)--option b is correct because fat gives more energy.
26)-option a is correct because in exergonic reaction energy is released.
27)-option e is correct because carbohydrates used for respiration.
28)-option b is correct because chlorophyll absorb deep blue and red light.
36)-option a is correct because enzymes speed up the chemical reaction.
41)-option b is correct because hydrogen bond formed between hydrogen and oxygen.
43)-option c is correct because only plant can synthesize food then plant and animal undergo respiration.
44)--option b is correct because in in carbohydrates there are 6 moles of carbon and oxygen and 12 moles of hydrogen.
1)-in first law of theemodyntherm total energy is constant and it change from one form to another same thing oocur in ecosystem energy change from one form to another .
2)--in plant cell cell wall present which is absent in animal cell.in plant cell large vacoule prseprein animal cell small vacoule present. In plant cell chloroplast is present which is absent in animal cell.
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