Chapter 3, Problem 1MIC

Describe a metabolic pathway.

How do enzymes reduce the amount of activation energy needed to make a chemical reaction go?

Can you answer all the parts to following question, true or false:  Q27:  A: Because enzymes reduce the activation energy of a reaction the resulting free energy produced by the reaction is also reduced (True or False) B: Living things create energy through the breakdown of food into nutrients which the cell can use. (True or False) C: All tissues in the body are able to use ketone bodies to generate energy (True or False) D: Autophosphorylation is a mechanism of receptor activation for both Insulin and leptin (True or False)

What is a metabolic pathway?

Why do enzymes bind to substrates?

Why are many reactions that occur in living systems irreversible for all intents and purposes?

1. ATP is a good source of energy for the cell because a) it is versatile-able to be used in many types of reactions b) its breakdown is easily coupled with energy–requiring reactions c) it provides just the right amount of energy for cellular reactions d) all of these are correct   2. Which of the following is an example of potential energy? a) gasoline in the tank of an automobile b) the engine of an auto running c) a skier moving downhill d) pushing a desk across a room   3. The conditions for alcoholic or lactic acid fermentation: a) are the same as those for cellular respiration b) result in the production of more ATP than cellular respiration c) include the requirement of both carbon dioxide and oxygen d) produce less ATP than cellular respiration   4. Which of the following statements is TRUE? a) according to chemisomotic theory, concentration gradients drive the formation of ATP b) an electron loses energy each time it is transferred down the ETC c) there is a buildup of H+…

What is the most common form of kinetic energy that is released from chemical energy in chemical reactions?

Enzymes are organic catalysts that (a) alter the direction in which a chemical reaction proceeds, (b) determine the nature of the products of a reaction, (c) increase the speed of a chemical reaction, (d) are essential raw materials for a chemical reaction that are converted into some of its products.