16 The first pathway of photosynthesis, in which light energy is converted into

Question

16 The first pathway of photosynthesis, in which light energy is converted into chemical energy in the form of ATP and NADPH, is referred to as the a. light reductions. b. dark reactions. c. carbon-fixation reactions. d. light reactions e. None of the above 17. During the formation of a peptide linkage, a(n) a molecule of water b. disulfide bridge c. hydrophobic bond d. hydrophilic bond e. ionic bond 18. Which of the folilowing is the balanced equation for the generation of sugar from sunlight, water and CO2? e. None of the above 9. The monomers that make up polymeric carbohydrates like starch are called a. nucleotides b. trisaccharides. d. nucleosides e. fatty acids 20. if a cell has an abundant supply of ATP, acetyl CoA may be used a. to enhance fermentation. b. to enhance oxidative metabolism c. for fatty acid synthesis. d. to convert glucose to glycogen. e. None of the above 21. Starch and glycogen, which are both polysaccharides, differ in their functions in that starch is , whereas glycogen- a. the main component for plant structural support, is an energy source for animals b. a structural material found in plants and animals; forms external skeletons in animals c. the principle energy storage compound of plants; is the main energy storage of animals d. a temporary compound used to store glucose; is a highly stable compound that stores complex lipids e. the main energy storage of animals; is a temporary compound used to store glucose

Explanation / Answer

16-d) light reaction

Light reaction is a light-dependent reaction which occurs in grana of the chloroplast. It requires the direct energy of light to make ATP and NADPH which are used in dark reactions.

17-a) molecule of water

Peptide linkage bond is the chemical bond between the carboxyl group and amino group, releasing a molecule of water

18-c) 6CO2 + 6H2O -> C6H12O6 + 6O2

This reaction takes place in the presence of sunlight where 6 molecules of carbon dioxide and 6 molecules of water reacts to form one molecule of glucose and six molecules of oxygen

19-c) monosaccharides

Monosaccharide may become the monomer which makes up polymeric carbohydrates like starch(polysaccharide)

20-c)For the fatty acid synthesis

Fatty acid synthesis means the formation of fatty acid from acetyl-CoA and NADPH

21-c) The principal energy storage compound of the plant; is the main energy storage of animals

starch is a polymer of glucose which is a major source of energy storage compound in plants whereas glycogen is the polysaccharide which is the main energy storage in animals

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