Exam 2 Flashcards

1
Q

Phosphate System=

A

ATP+CP (It is a high intensity system)

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2
Q

Anaerobic System=

A

Glycolysis (Long anaerobic system)

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3
Q

Endurance System=

A

Aerobic (With oxygen system)

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4
Q

Potential Energy

A

Energy stored within a physical system as a result of the position or configuration of the different parts of that system. It has the potential to be converted into other forms of energy
energy stored within a physical system as a result of the position or configuration of the different parts of that system.

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5
Q

Kinetic Energy

A

Energy of motion

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6
Q

Free Energy

A

Max amount of released energy that is capable of doing work.

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7
Q

Thermodynamic free energy

A

The energy in a physical system that can be converted to do work.

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8
Q

First Law of Thermodynamics

A

Energy cannot be created nor destroyed, but can change forms.

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9
Q

Second Law of Thermodynamics (Entropy)

A

.Entropy = thermodynamic property moving towards equilibrium.

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10
Q

How many forms can energy change into? What kind?

A

6 forms. Heat, mechanical, chemical, electrical, solar, light.

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11
Q

Enzymes

A

Are biological catalysts that increase the rate of chemical reactions.
Do not get destroyed during process. Act by lowering energy required for a reaction to proceed

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12
Q

Enzyme Activity

A

The rate its substrates are converted to products.

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13
Q

What influences enzyme activity?

A
  1. Temperature
  2. pH
  3. Substrate or enzyme concentration
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14
Q

Enzyme-Substrate Kinetics

A

Reaction rates increase as substrate concentration increase, but become saturated at very high concentrations of substrate.

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15
Q

Why are cofactors and coenzymes necessary?

A

For normal activity of enzymes.

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16
Q

Cofactors include…

A

Metal ions such as Ca+2, Mg+2, Mn+2, Cu+2, Zn+2 & selenium.

17
Q

Coenzymes are

A

derived from vitamins

18
Q

Phosphorylation

A

Process of adding a phosphate group to an organic molecule.

19
Q

Enzyme Activation

A
  1. Many enzymes are produced in an inactive form.
  2. Many are activated by phosphorylation & inactivated by dephosphorylation.
  3. Others activated by ligands (small molecules, bind with metals) called 2nd messengers
20
Q

Law of mass action

A

Direction of reaction is from side of equation where concentration is higher to side where concentration is lower.

21
Q

Exergonic Reactions

A

Release energy as they proceed. It is the breakdown of ATP, the universal energy carrier. Most exergonic reactions in the body make ATP.

22
Q

Endergonic Reaction

A

Require input of energy to proceed.

23
Q

What two things can happen to a molecule?

A

Reduced. Oxidized.

24
Q

What does a reducing agent do?

A

donates electrons.

25
Q

What does an oxidizing agent do?

A

accepts electrons.

26
Q

What coenzymes play important roles as H carriers?

A

NAD and FAD

27
Q

What are NAD and NADH derived from and what do they stand for?

A

NAD=oxidized NADH=reduced both derived from vitamin B3(niacin)

28
Q

What are FAD and FADH derived from and what do they stand for?

A

FAD=oxidized FADH=reduced both derived from vitamin B2(ribloflavin)