Question

Multiple Choice (1 point cach): Circle the letter of the most correct answer 22. (1 pts) The TCA cycle intermediate that is a substrate for glutamate synthase is a Coenzyme A b. 2-oxo-glutarate Succinate d. Malate 23. (1 pts) Which of these compounds is typically released by root hair cells to act as an attractant to nitrogen-fixing bacteria? a Aspartate b. Flavonoid e Acetate d. Leghemoglobin 24.(1 pts) Binding of a Nod factor by a root hair receptor results in oscillations of which cellular second messenger? Potassium b. Cyclic AMP Inositol phosphate Calcium 25. ( pts) Nitrogenase Reduces nitrate ion b. Reduces nitrile ion Reduces nitrogen gas Produces glutamate 26. (I pts) The amount of ATP required for nitrogenase to carry out one round of nitrogen fixation is 1 ATP b. 4 ATP c. 16 ATP d. None of the above 27.(1 pts) Which of these factors is not taken into account by Fick's law of diffusion? a Area available for diffusion b. Concentration gradient Ionic charge gradient d. Membrane permeability 28. (2 pts) What are 2 types of protein assemblies that plant cells can use to translocate solute particles?

Answer 1

Ans.22. 2 oxo glutarate

Ans.23.flavanoid

Ans.24.calcium

Ans.25.reduce nitrogen gas

Ans.26.16 atp

Ans.27.membrane permeability

Ans.28.