A&P Chapter 3 Flashcards
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Questions and Answers

The capacity to do work is known as?

Energy

What is stored energy known as?

Potential energy

What type of energy is known as the energy of motion?

Kinetic energy

Energy stored in chemical bonds is called?

<p>Chemical energy</p> Signup and view all the answers

Glucose is stored in the liver and muscles in the form of a polymer called?

<p>Glycogen</p> Signup and view all the answers

Which of the following are forms of kinetic energy?

<p>Sound</p> Signup and view all the answers

The propagation of an impulse in a neuron is an example of what type of energy?

<p>Electrical energy</p> Signup and view all the answers

The vibrating strings on a violin imports ___ kinetic energy to the air around it.

<p>Sound</p> Signup and view all the answers

Ultraviolet light, radio waves, and visible light are examples of what?

<p>Radiant energy</p> Signup and view all the answers

Which color of visible light has the shortest wavelength?

<p>Violet</p> Signup and view all the answers

Heat energy is usually available to do work.

<p>False</p> Signup and view all the answers

Temperature is the measurement of what kind of energy?

<p>Heat energy</p> Signup and view all the answers

The study of energy transformation is known as?

<p>Thermodynamics</p> Signup and view all the answers

The ___ law of thermodynamics states that energy can neither be created nor destroyed.

<p>First</p> Signup and view all the answers

If 100% of the energy was to be transferred from one form to another with no generation of heat, the heat ____ law of thermodynamics would be violated.

<p>Second</p> Signup and view all the answers

Radiant energy is a form of electromagnetic waves and is a type of kinetic energy.

<p>True</p> Signup and view all the answers

The ___ law of thermodynamics states that a quantity of energy can't be completely transferred from one form into another.

<p>Second</p> Signup and view all the answers

The energy required to break existing chemical bonds in reactants is called the ___ energy.

<p>Activation</p> Signup and view all the answers

Which processes are involved in a chemical reaction?

<p>Formation of chemical bonds</p> Signup and view all the answers

In a chemical equation the ___ are written on the left and the ___ are written on the right.

<p>Reactants/ products</p> Signup and view all the answers

___ are present prior to the start of a chemical reaction.

<p>Reactants</p> Signup and view all the answers

What type of reaction is represented by A+B->AB?

<p>Synthesis</p> Signup and view all the answers

Which criteria can be used for classifying chemical reactions?

<p>Reversibility or irreversibility</p> Signup and view all the answers

What is a large molecule that is broken down into smaller chemical structures called?

<p>Decomposition</p> Signup and view all the answers

All the decomposition reactions in an organism are called?

<p>Catabolism</p> Signup and view all the answers

What type of reaction results when small molecules combine to make a large one?

<p>Synthesis</p> Signup and view all the answers

___ is the collective term for all the synthesis reactions in the body.

<p>Anabolism</p> Signup and view all the answers

A chemical reaction that involves both decomposition and synthesis is called a ___ reaction.

<p>Exchange</p> Signup and view all the answers

What type of reaction involves the transfer of electrons from one reactant to another?

<p>Oxidation-reduction</p> Signup and view all the answers

If an electron and a hydrogen ion are removed from a structure during a chemical reaction, the structure is said to have been ___

<p>Oxidized</p> Signup and view all the answers

When a molecule or ion gains an electron during a reaction, it is said to have been ______.

<p>Reduced</p> Signup and view all the answers

In the mnemonic 'LEO says GER', what does 'GER' stand for?

<p>Gains Electrons is Reduced</p> Signup and view all the answers

The reaction picture is a ___ reaction.

<p>Exergonic</p> Signup and view all the answers

Most catabolic reactions release energy meaning that they are also ________________.

<p>Exergonic</p> Signup and view all the answers

Most anabolic reactions are also ______ meaning that they require energy.

<p>Endergonic</p> Signup and view all the answers

If the rate of a reaction leads to a net loss of reactants, then the reaction is considered?

<p>Irreversible</p> Signup and view all the answers

The reaction A+B—>AB is a ___ reaction.

<p>Irreversible</p> Signup and view all the answers

If over time, products and reactants are formed at the same rate, then the reaction is said to be?

<p>Reversible</p> Signup and view all the answers

A double-ended arrow in a reaction indicates that the reaction is __?

<p>Reversible</p> Signup and view all the answers

The measure of how quickly a chemical reaction takes place is known as the reaction __?

<p>Rate</p> Signup and view all the answers

__ are formed during a chemical reaction.

<p>Products</p> Signup and view all the answers

A ___ chemical reaction occurs when a large molecule is broken down into smaller structures.

<p>Decomposition</p> Signup and view all the answers

Which terms can be used to classify reactions based on the relative amounts of energy in reactants and products?

<p>Exergonic</p> Signup and view all the answers

In an __ reaction, the amount of energy in the products is less than the amount of energy in the reactants.

<p>Exergonic</p> Signup and view all the answers

Put the four basic stages of glucose oxidation in order from first to last.

<ol> <li>Glycolysis 2. Intermediate stage 3. Citric acid cycle 4. Electron transport system</li> </ol> Signup and view all the answers

What is cellular respiration?

<p>Is a multi-step process in which organic molecules like glucose, fatty acids, and amino acids are broken down to extract energy to form ATP.</p> Signup and view all the answers

In aerobic respiration, the ATP production method requiring oxygen is known as?

<p>Substrate-level phosphorylation, oxidation phosphorylation</p> Signup and view all the answers

Which are true of an enzyme?

<p>It decreases activation energy</p> Signup and view all the answers

Which of the following are locations of enzymes involved in glucose oxidation?

<p>Cytosol</p> Signup and view all the answers

What is the chemical equation for glucose oxidation?

<p>C6H12O6 + 6O2 -&gt; 6CO2 + 6H2O</p> Signup and view all the answers

If the cofactor is an organic molecule, it is called a?

<p>Coenzyme</p> Signup and view all the answers

Most enzymes are __ proteins that range in size from 60 to 2500 amino acids.

<p>Globular</p> Signup and view all the answers

Study Notes

Energy Concepts

  • Energy is the capacity to do work, existing in various forms such as potential and kinetic energy.
  • Potential energy refers to stored energy, while kinetic energy is the energy of motion.
  • Chemical energy is specifically the energy stored within chemical bonds.

Forms of Kinetic Energy

  • Types of kinetic energy include mechanical, radiant, electrical, thermal, and sound.
  • Electrical energy is exemplified by impulse propagation in neurons.
  • Sound energy is generated by vibrating objects, transferring kinetic energy to air.

Radiant Energy and Visible Light

  • Radiant energy encompasses ultraviolet light, radio waves, and visible light.
  • Among visible light, violet has the shortest wavelength.

Thermodynamics

  • Thermodynamics is the study of energy transformations.
  • The first law states that energy cannot be created or destroyed, only transformed.
  • The second law indicates that not all energy can be perfectly converted between forms, leading to heat loss.

Chemical Reactions

  • Reactants are substances present prior to a chemical reaction, while products are formed during it.
  • Chemical reactions can be classified as synthesis (A + B → AB), decomposition (breaking down large molecules), or exchange (involving both decomposition and synthesis).
  • Catabolism refers to all decomposition reactions, while anabolism refers to all synthesis reactions in the body.

Oxidation and Reduction Reactions

  • Oxidation-reduction (redox) reactions involve electron transfer; removal of electrons results in oxidation, while gaining electrons results in reduction.
  • The mnemonic "LEO says GER" stands for "Lose Electrons is Oxidized" and "Gain Electrons is Reduced."

Reaction Energetics

  • Exergonic reactions release energy, while endergonic reactions require energy input.
  • A reaction is considered irreversible if it leads to a net loss of reactants and reversible if reactants and products are formed at the same rate.

Rate of Reactions

  • The rate of a chemical reaction measures how quickly reactants are converted to products.
  • Classification of reactions can be based on energy changes: exergonic (energy in products is less) and endergonic (more energy in products).

Glucose Oxidation and Cellular Respiration

  • Glucose oxidation follows stages: glycolysis, intermediate stage, citric acid cycle, and electron transport system.
  • Cellular respiration breaks down organic molecules like glucose to extract energy in the form of ATP.

Enzymes in Biochemical Reactions

  • Enzymes are catalysts that reduce activation energy and increase reaction rates, primarily located in the mitochondria and cytosol.
  • Most enzymes are globular proteins with sizes ranging from 60 to 2500 amino acids.
  • Coenzymes are organic molecules that serve as cofactors for enzyme activity.

Chemical Equation for Glucose Oxidation

  • The reaction depicting glucose oxidation is C6H12O6 + 6O2 → 6CO2 + 6H2O, illustrating the conversion of glucose and oxygen into carbon dioxide and water.

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Test your knowledge of energy concepts with these flashcards from Anatomy & Physiology Chapter 3. Each card features a key term and its definition, helping you master essential vocabulary related to energy. Perfect for quick reviews or studying for exams.

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