Study the diagram below. Write your answers to the questions in the spaces provided. a. 12p 12p b. 8p 8n 1. If atom A loses electrons to atom B, how many electrons will atom A lose ?

What layer of the atmosphere is directly above the troposphere?

If the concentration of phosphate in the cytosol is 2.0 mm and the concentration of phosphate in the surrounding fluid is 0.1 mm, how could the cell increase the concentration of phosphate in the cytosol? a) passive transportb) diffusionc) active transportd) osmosise) facilitated diffusion

Which statement is true about a catalyst? a: a catalyst decreases the rate of the reaction. b. a catalyst is consumed during a chemical reaction. c. a catalyst lowers the activation energy of a reaction. d. a catalyst increases the reactant concentration during a reaction.