Quiz a lot 9; Biology & Microbiology - Molecular And Microbiology

Free

Heme prosthetic groups are involved in electron transfer with quinones

Free

Catabolic pathways are essential for microorganisms to obtain energy, because biosynthetic reactions for cellular growth generally require energy input

3

Free

In electron transport systems, the electron carriers are membrane associated

4

Free

In substrate-level phosphorylation, ATP storage is depleted during the steps in catabolism of the fermentable compounds

5

Free

Molebdenum is a cofactor for nitrogenase, which means every nitrogen-fixing microorganisms will not be able to fix nitrogen without Mo

6

Magnesium is not considered a growth factor for microorganisms, because growth factors are always organic compounds

7

Cells require iron supplemented in their growth medium as a trace metal, because it is consumed by quinones during electron transport for ATP production

8

Varied coenzyme availability increases the diversity of enzymatic reactions in both biosynthetic and catabolic pathways possible in a cell

9

If a substance is reduced, it gains electrons

10

The energy released from the hydrolysis of coenzyme A is conserved in the synthesis of ATP

11

The proton motive force is most often generated by splitting of H2

12

Biosynthesis of glucose can occur by compounds other than sugars via gluconeogenesis

13

With respect to nitrogen utilization, relatively few bacteria can use NH3 whereas many more can make use of N2

14

Free-energy calculations are dependent on the rates of the reactions

15

In a given chemical reaction, if the free energy of formation is known for all of the reactants and each of the products, the change in free energy can be calculated for the reaction

16

Nitrogenases not only reduce N2 but also can act on acetylene (C2H2)

17

Due to the number of phosphate groups, ATP has approximately three times more energy stored than AMP, and ADP has approximately two-thirds the energy stored of ATP

18

Each amino acid made during protein biosynthesis first requires a separate biosynthetic pathway to be invoked by a cell

19

Depending on the particular metabolism of a bacterium, electron transport can be used to energize and rotate ATP synthase

20

The terminating step of moving electrons onto oxygen releases additional ATP during aerobic metabolism not made during anaerobic growth

21

Regeneration of oxaloacetate is essential for the citric acid cycle to be cyclical

22

A bacterial isolate that grows better on a nutrient agar plate supplemented with amino acids but still grows in a nutrient agar plate lacking amino acids suggests amino acids are trace nutrients for the isolate

23

Which metabolic cycle or pathway is LEAST likely to be invoked during the biosynthesis of DNA?

24

Which metabolic strategy does NOT invoke the proton motive force for energy conservation?

25

Hypothetically, if electron pools existed in sufficient numbers for enzymes to use in metabolic reactions,

26

One example of an electron acceptor that can be used in anaerobic respiration is

27

When culturing a chemoorganoheterophic bacterium, what outcome is LEAST likely to occur if ammonia and phosphate are provided at equal concentrations?

28

Most of the carbon in amino acid biosynthesis comes from

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Quiz a lot 9; Biology & Microbiology - Molecular And Microbiology

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