Question

Life science 2.2

Reactions that tend to go on their own, releasing energy, are called: O exergonic O endergonic O catalytic productive Why is consuming on a sugar-free diet, without reducing overall caloric intake, not necessarily effective? our body builds sugar from excess protein and fat O all food groups feed into the respiration pathway O extra sugar is stored in our blood stream Breakdown of glucose generates many ATP molecules, each of which can be used independently. Why is ATP ideally suited to power biological reactions? O ATP has many hydrogen bonds ○ ATP has enough energy to power one biological reaction OATP readily dissolves in water Is building glucose from carbon dioxide an endergonic or exergonic reaction? endergonic exergonic Objects that are not actively moving but have the capacity to do so are said to possess: kinetic energy ︵ entropy O potential energy living energy

Answer 1

Reactions that tend to go on their own, releasing energy, are called: exergonic endergonic O catalytic O productive Why is consuming on a sugar-free diet, without reducing overall caloric intake, not necessarily effectiye? our body builds sugar from excess protein and fat o all food groups leea mo me respiratuton pathway O extra sugar is stored in our blood stream Breakdown of glucose generates many ATP molecules, each of which can be used independently. Why is ATP ideally suited to power biological reactions? A1P has many hydrogen bonds ATP has enougn energy to power one biological reaction O ATP readily dissolves in water Is building glucose from carbon dioxide an endergonic or exergonic reaction? endergonic exergonic Objects that are not actively moving but have the capacity to do so are said to possess: kinetic energy potential energy living energy

How is ATP utilized for muscle contraction? Why does this mechanism result in rigor mortis? ATP is negative and muscle fibers are positive, but fibers become negative after death O ATP temporarily crosslinks muscle fibers, which becomes permanent after death ATP has many hydrogen bonds, but these dissociate after death Not sure about answer Diffusion requires energy D utilizes proteins to move molecules across a membrane moves molecules against a concentration gradient cannot occur without a membrane present What is the name of the molecule on which an enzyme works? O substrate monomer O polymer ATP contains phenylalanine two phosphate groups Othree nitrate groups three phosphate groups Glycolysis occurs only in animal cells roduces a net gain of two molecules of A occurs in mitochondria. O

The First Law of Thermodynamics states: energy is constantly being created by entropy events energy can be changed from one form to another, but cannot be created or destrove energy can be used and then destroyea because of entropys actions on it energy can be destroyed while it is producing entropy How do we dispose of the carbon derived from the glucose that is metabolized during respiration? breathing out via our urine it is broken down in lysosomes What is an enzyme? O a protein that supplies water for hydrolysis reactions a protein that facilitates a reaction a protein that absorbs water during dehydration reactions What are the inputs and the output molecules for respiration? input oxygen and water: output sugar and carbon dioxide put sugar and oxygen; output carbon dioxide and water O input carbon dioxide and water output sugar and oxygen What kind of reaction is photosynthesis? endergonic KiI kimeuc energy exergonic potential energy equilibrium

How does chlorophyll function in photosynthesis? by absorbing carbon dioxide by absorbing the sun's energy by absorbing water Objects that are moving are said to possess: O living energy O potential energy entropy kinetic energy The energy source for the process of photosynthesis is Oxygen sunlight carbon dioxide O chlorophyll O glucose The respiration pathway that evolved first is probably O glycolysis aerobic respiration O citric acid cycle What is meant by a "coupled reaction" in terms of energy? O many poymers are built simultaneously one reactions powers anothett some reactions occur in the same organelle