chapter 11 notes

Question 1

• use organic molecules as carbon sources which often also serve as energy source
• can use a variety of carbon sources

Answer 1

Heterotrophs

Question 2

-use carbon dioxide as their sole or principal carbon source

must obtain energy from other sources

Answer 2

autotrophs

Question 3

obtain energy from oxidation of chemical compounds

Answer 3

chemotrophs

Question 4

Chemoorganotrophic AKA chemoheterotrophs processes

Answer 4

• aerobic respiration
• anaerobic respiration
• fermentation

Question 5

for Aerobic respiration the final electron acceptor is

Answer 5

oxygen

Question 6

for Anaerobic respiration the final electron acceptor is different ___ acceptor such as NO3-, SO42-, CO2, Fe3+, or SeO42-

Answer 6

exogenous

Question 7

Uses an endogenous electron acceptor

usually an intermediate of the pathway used to oxidize the organic energy source e.g., pyruvate

Answer 7

fermentation

Question 8

• Does not involve the use of an electron transport chain nor the generation of a proton motive force
• ATP synthesized only by substrate-level phosphorylation

Answer 8

fermentation

Question 9

Many different energy sources are funneled into common ___ pathways

Answer 9

degradative

Question 10

when it comes to energy sources, most pathways generate ___ or intermediates of the pathways used in glucose metabolism

Answer 10

glucose

Question 11

function both as catabolic and anabolic pathways

Answer 11

Amphibolic pathways

Question 12

important amphibolic pathways

Answer 12

• Embden-Meyerhof pathway
• pentose phosphate pathway
• tricarboxylic acid (TCA) cycle