3.4

Question 1

Gasoline and Glucose

Answer 1

• Both has C-H bonds
• C-H bonds holds very large amounts of potential energy

Question 2

Electrons and C-H Bonds

Answer 2

• Further away an electron is from nucleas, the more potential energy it has
• Energy is released as electrons move closer
• Energy is absorbed as electrons moves further away from the nucleus
• Size of Nuclueas also affects Potential Energy

Ex. stronger nculeas = stronger force of attraction

• ENERGY is released as the
  electrons move to a lower energy level.

Question 3

Energy changes during oxidation

Answer 3

Oxidation = atom loses electrons

Reduction = atoms gains electrons

Question 4

Oxidizing/reduction agent (OPPOSITE)

Answer 4

Oxidizing Agent
* Atom or molecule that gains e-

• Reducing Agent
• Atom or molecule that loses e-

Question 5

Oxidation of Food Molecules
IMAGE

Answer 5

• Oxidation of glucose releases energy

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Question 6

Rapid Combustion and Controlled Oxidation

Answer 6

Rapid Combustion:
- Would be desasterious for living organisms (re would spontaneously combust)\
- All free energy is released as heat

Controlled Oxidation:
- Several steps through enzynamic rxns
- Energy is stores at each step
-Less energy is released as heat

Question 7

Energy Carriers

Answer 7

Dehydrolynease:
- Enzymes used for oxidation of glucose
- act as energy Carriers (redox rxn)

NAD+ : common energy carrier, Positively charged coenzyme

• NAD+ is reduced to NADH, which can be
  used to power ATP synthesis