Bioenergetics

Question 1

The transfer and utilization of energy in biologic systems

Answer 1

Bioenergetics

Question 2

Measure of change in heat content of the reactants and products

Answer 2

Change in Enthalpy

Question 3

Measure of the change in randomness or disorder of the reactants and products

Answer 3

Change in Entropy

Question 4

Energy available to do work

Answer 4

Change in free energy

Question 5

Net loss of energy? Exergonic or Endergonic?

Answer 5

Exergonic

Question 6

Net gain of energy? Exergonic or Endergonic?

Answer 6

Endergonic

Question 7

Acts as the energy currency of the cell

Answer 7

Adenosine Triphosphate

Question 8

Give the two ways in which your cells produce ATP

Answer 8

Oxidative and Substrate Phosphorylation

Question 9

Greatest quantitative source of high energy phosphate in aerobic organisms

Answer 9

Oxidative Phosphorylation

Question 10

Final common pathway by which electrons from the different fuels of the body flow to oxygen

Answer 10

Electron Transport Chain

Question 11

Electron transport chain is located in the _________, specifically, in the __________

Answer 11

Mitochondria

Inner membrane

Question 12

2 electron carriers used in the ETC

Answer 12

NAD+

FAD

Question 13

NAD derived from

Answer 13

Niacin (Vitamin B3)

Question 14

FADH2 is derived from

Answer 14

Riboflavin (Vitamin B2)

Question 15

Parts of th Mitochondria: Freely permeable to most molecules

Answer 15

Outer membrane

Question 16

Impermeable to most molecules

Answer 16

Inner membrane

Question 17

Parts of the Mitochondria: Increase surface area

Answer 17

Cristae

Question 18

Part of the mitochondria that contains enzymes, mtDNA, mtRNA, mitochondrial ribosomes

Answer 18

Matrix

Question 19

All components in the ETC are fixed to the inner mitochondrial membrane except

Answer 19

Coenzyme Q

Cytochrome C

Question 20

Only non-protein component of the ETC

Answer 20

Ubiquinone

Question 21

Protons ar pumped to the intermembranous space in 3 complexes?

Answer 21

(I, III, IV)

Question 22

Final electron acceptor

Answer 22

Oxygen

Question 23

The chemiosmotic hypothesis explains how the free energy generated by the transport of electrons by the electron transport chain is used to produce ATP from ADP+Pi

Answer 23

Mitchell Hypothsis

Question 24

When there is lack of oxygen, there is decreased activity of the electron transport chain

Answer 24

Tissue hypoxia

Question 25

Compounds that increase the permeability of the inner mitochondrial membrane to protons

Answer 25

Uncouplers

Question 26

One of the symptoms of aspirin overdose is

Answer 26

Hyperpyrexia

Question 27

Aspirin Overdose: The reason for this is

Answer 27

ETC uncoupling with increased body heat production

Question 28

Neonates rely on __________ to produce heat and prevent hypothermia

Answer 28

Thermogenin

Question 29

Directly inhibit ATP Synthase (Complex V)

Answer 29

ATP Synthase Inhibitors

Question 30

It inhibits oxidative phosphorylation by inhibiting the transporter of ADP into and ATP out of the mitochondrion

Answer 30

Atractyloside