bact physo: metabolism

Question 1

what is metabolism?

Answer 1

sum of all reactions in a cell

Question 2

what is catabolism

Answer 2

reactions that degrade and release energy (ATP) and reducing powers (NADH, FAD, etc)

Question 3

what is anabolism?

Answer 3

synthesis of complex molecules from simple molecules

*requires energy (ATP)

Question 4

what does energy production involve?

Answer 4

redox reactions

Question 5

what is oxidation?

Answer 5

removal of e-

Question 6

what is reduction?

Answer 6

addition of e-

Question 7

generation of ATP involves what?

Answer 7

phosphorylation

Question 8

what are three phosphorylation mechanisms?

Answer 8

• substrate level phosphorylationphosphorylation
• oxidative phosphorylation
• photo

Question 9

what is substrate level phosphorylation?

Answer 9

transfer of energy to ADP

Question 10

what is oxidative phosphorylation

Answer 10

transfer of energy to electron carriers and ultimately to oxygen or other e- acceptors

Question 11

what is photophosphorylation

Answer 11

transfer of energy from sun light

Question 12

what are bacteria that derive energy from chemicals?

Answer 12

chemotrophs

Question 13

what mechanisms are used by chemotrophs?

Answer 13

respiration and fermentation

Question 14

what is respiration

Answer 14

chemicals are oxidized and final electron acceptors are inorganic

Question 15

what is the final e- acceptor for aerobic metabolism?

Answer 15

oxygen

Question 16

what is the final e- acceptor for anaerobic metabolism

Answer 16

inorganic chemicals

Question 17

what are the electron donors and acceptors for fermentation?

Answer 17

organic molecules

Question 18

is O2 required for fermentation?

Answer 18

no

Question 19

is there a krebs cycle for fermentation?

Answer 19

no

Question 20

what are biochemical tests designed to detect?

Answer 20

the presence of enzymes