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WorksheetsEnergy and Metabolism(XULA)
Total questions: 27
Worksheet time: 27mins
What is the ultimate source of energy for life?
Atp
Radiant Energy
Cells
Glucose
something that has mass and takes up space is?
Solid
Weight
Mass
Matter
the capacity to do work (change in state or motion of matter)
Exergonic
Energy
Potential Energy
Velocity
heat and temperature and its relation to energy and work
Pressure
Thermodynamics
Entropy
Metabolism
capacity to do work as a result of position or state
Concentration gradient
Potential Energy
Kinetic Energy
Endergonic
energy of motion is used, work is performed
Kinetic Energy
Entropy
Potential Energy
Chemical Energy
potential energy stored in chemical bonds
Energy Transformation
Potential Energy
Kinetic Energy
Chemical Energy
The First Law of Thermodynamics states...
When energy is converted from one form to another, some usable energy is converted into heat that disperses into the surroundings
Energy cannot be created or destroyed
Biological systems are open systems that exchangeenergy with their surroundings
The Second Law of Thermodynamics states...
Energy cannot be created or destroyed
Biological systems are open systems that exchange energy with their surroundings
When energy is converted from one form to another, some usable energy is converted into heat that disperses into the surroundings
The measure of the disorder or randomness of energy
Entropy
Free Energy
Heat
Enthalpy
All chemical reactions taking place in an organism
Chemical Reaction
Metabolism
Energy
Exergonic reaction is...
a reaction in which there is a gain of free energy
pathways in which complex molecules are synthesized from simpler substances (requires energy)
releases energy and is a “downhill” reaction, from higher to lower free energy
the amount of energy available to do work under the conditions of a biochemical reaction
Endergonic reaction is...
an orderly state with a region of higher concentration and another region of lower concentration
releases energy and is a“downhill” reaction, from higher to lower free energy
A reaction that proceeds forward and in reverse at the same time eventually reaches dynamic equilibrium
a reaction in which there is again of free energy
Nucleotide that consist of adenine, ribose, and 3 phosphate groups is called what?
Adenosine triphosphate (ATP)
Deoxyribonucleic acid (DNA)
Ribonucleic acid (RNA)
Ribosomal ribonucleic acid (rRNA
When a substance loses electrons this is called?
Oxidation
Reduction
When a substance gains electrons this is called?
Oxidation
Reduction
Reactions that often occur in a series of electron transfers can be called?
Endergonic
Exergonic
Entropy
Redox
In a redox reaction what is usually transferred?
Oxygen Atom
Hydrogen atom
Carbon atom
Nothing
What is a nucleotide that accepts hydrogen atoms and their electrons
Flavin adenine dinucleotide (FAD)
Thymine
Guanine
Cytosine
What is Cytochromes?
Something that speeds up chemical reactions
A regular protein
A protein that contain iron
Something that forms an unstable intermediate complex with a substrate
The energy required to break existing bonds and begin a reaction is?
Adenosine triphosphate (ATP)
Redox
Metabolic pathway
Energy of activation (EA)
The product of one enzyme-controlled reaction serves as substrate for the next in series of reactions is?
Metabolic pathway
Gene control
Feedback inhibition
Nonpolypeptide
When a specific gene directs synthesis of each type of enzyme this is called?
Product
Gene control
Substrate
Coenzymes
Enzyme regulation in which the formation of a product inhibits an earlier reaction in the sequence
Competitive inhibition
Feedback inhibition
Noncompetitive inhibition
Irreversible inhibition
The inhibitor competes with the normal substrate for the active site of the enzyme.
Competitive inhibition
Noncompetitive inhibition
Feedback inhibition
Irreversible inhibition
The inhibitor binds with the enzyme at a site other than the active site, altering the shape of the enzyme and thereby inactivating it.
Competitive inhibition
Noncompetitive inhibition
Feedback inhibition
Irreversible inhibition
Inhibitor permanently inactivates or destroys an enzyme when the inhibitor combines with one of the enzyme’s functional groups, either at the active site or elsewhere
Noncompetitive inhibition
Feedback inhibition
Competitive inhibition
Irreversible inhibition
