Ch.5 Microbial Metabolism

Question 1

what is an organisms metabolism?

Answer 1

sum total of all its’ chemical reactions

Question 2

what is a exergonic chemical reaction?

Answer 2

energy-releasing

Question 3

what is a energy requiring chemical reaction?

Answer 3

endergonic

Question 4

what is ATP hydrolysis?

Answer 4

energy releasing

Question 5

what is ATP formation?

Answer 5

energy requiring

Question 6

what does this chemical formula represent?

ATP + H2O—-> ADP + Pi +H

Answer 6

energy-releasing

Question 7

what does this chemical reaction represent ?

ADP + Pi+ H——->ATP + H2O

Answer 7

energy-requring

Question 8

what does coupling energy require processes?

Answer 8

anabolism

Question 9

what is energy releasing processes?

Answer 9

catabolism

Question 10

what is this an example of glucose->CO2 + H2On(cellular respiration) ?

Answer 10

catabolism

Question 11

what is this an example of amino acids -> proteins?

Answer 11

anabolism

Question 12

how does glycolysis and cellular respiration capture energy ?

Answer 12

via electrons (as H atoms)

Question 13

where does glycolysis and cellular respiration transport electrons to ?

Answer 13

electron carriers

Question 14

what does catabolic pathways yield energy though?

Answer 14

redox reaction

Question 15

in the formula:
C6H12O6 + 6O2——-> 6CO2 + 6H2O + Energy

what is oxidized and what is reduced?

Answer 15

Reduced:
6O2——-> 6CO2 + 6H2O

Oxidized:
C6H12O6 + 6O2——-> 6CO2

Question 16

what is oxidation?

Answer 16

the loss of electrons

Question 17

what is reduction?

Answer 17

the gain of electrons

Question 18

Energy released by redox reactions are captured to form ATP via what?

Answer 18

phosphorylation of ADP

Question 19

what do oxidative phosphorylation (RESPIRATION) and Photophorylation (PHOTOSYNTHESIS) require?

Answer 19

electron transfer chain and utilizes a process of chemosis

Question 20

what is phosphorylation driven by?

Answer 20

light

Question 21

what employs electron transfer & terminal electron acceptor?

Answer 21

respiration

Question 22

what is respiration aerobic with ?

Answer 22

with oxygen as terminal acceptor

Question 23

what is respiration anaerobic with?

Answer 23

with NO3- or other terminal acceptor

Question 24

is fermentation anaerobic or aerobic?

Answer 24

anaerobic

Question 25

what is the incomplete oxidation of carbohydrate?

Answer 25

fermenation

Question 26

what are the stages of respiration?

Answer 26

1.glycolysis
2.Acetyl-CoA formation
3.Kerbs cycle
4.Electron transport

Question 27

what is the first stage in carbohydrate catabolism?

Answer 27

pyruvic acid

Question 28

what is glycolysis(eden-meyerhof pathway) shared among?

Answer 28

prokaryotes and eukaryotes

Question 29

what pathway is found in certain gram-negative bacteria?

Answer 29

Enter-Doudoroff pathway

Question 30

what is the sugar acids catabolism pathway?

Answer 30

Enter-Doudoroff

Question 31

what produces pentose sugars?

Answer 31

pentose-phosphate shunt

Question 32

The pentose-phosphate shunt is used for biosynthesis of what?

Answer 32

-aromatic amino acids
-nucleotides
-can also form pyruvate

Question 33

what cycle finalizes glucose oxidation ?

Answer 33

kerbs cycle

Question 34

what is the result per acetyl-CoA oxidation in kerbs cycle ?

Answer 34

3 NADH
1 FADH2
1 ATP

Question 35

what is the result per glucose oxidized in Kerbs cycle?

Answer 35

6 NADH
2 FADH2
2 ATP

Question 36

what are autotrophs?

Answer 36

make their own food

Question 37

what uses only photosynthesis I?

Answer 37

Green sulfur bacteria (chlorobium)

Question 38

what does purple non-sulfur bacteria (rhodospirillium) use?

Answer 38

photosynthesis II and cyclic photophosphorylation

Question 39

what does the Calvin benson cycle convert?

Answer 39

converts CO2 into sugars

Question 40

does light independent reactions directly require light?

Answer 40

no it does not directly require light

Question 41

The false statement is…

A. Energy is required to produce ATPs.

B. Generally the food that you eat will ultimately become oxidized by the cells in your body.

C. There are reactions in your body that do not require air(oxygen).

D. You ate a doughnut this morning. Your body generally sees this as a source of electrons.

E. ATPs can be used to provide energy for cellular processes.

F. The oxygen you inhale is converted to water.
G. None of A – F is false.

Answer 41

G. None of A – F is false.

Question 42

Catabolic processes such as cellular respiration release energy.
Based on the information below, you can assume the energy
released from catabolism could be used for the purpose of
forming ATPs.

ATP Hydrolysis: ATP+ H2O——>Pi + H energy releasing

ATP Formation: ADP + Pi + H —–> ATP +H2O energy requring

A. Yes, that assumption is correct.
B. No, that assumption is false.

Answer 42

no its false

Question 43

An anabolic process is one that could also be linked to ATP formation.

A. True B. False

Answer 43

false

Question 44

Chemical “X” has been oxidized by
chemical “Z”; this means that

A. Oxygen has been added to “X”

B. “Z” has lost electrons

C. “Z” has become reduced

D. “X” has gained electrons

E. Two of the above are correct

F. Three of the above are correct

Answer 44

B. “Z” has lost electrons
D. “X” has gained electrons

Question 45

The reaction for cellular respiration:

Which molecule is oxidized?

Which molecule is reduced? A, B, C, or D

C6H12O6 + 6O2——-> 6CO2 + 6H2O + Energy

C6H12O6=A

6O2=B

6CO2=C

6H2O=D

Answer 45

1.A & C
2.B & D

Question 46

Which is correct regarding this redox reaction?

A. Pyruvate is oxidized and NADH is oxidized
B. Pyruvate is reduced and NADH is oxidized
C. Pyruvate is oxidized and NADH is reduced
D. Pyruvate is reduced and Lactate is oxidized

Question 47

This is not a requirement for some types of
respiration

A. A membrane.

B. Oxygen

C. An electron transport system

D. A proton motive force

E. ATP synthase (ATPase)

F. An electron donor

G. All are required for all types of respiration

Answer 47

B