Ch 17 Metabolism IV

Question 1

True or False: All lithotrophs are eukaryotic

Answer 1

False, bacteria or archaea

Question 2

True or False: Nitrogen oxidation is a kind of lithotrophy that is important to the environment

Answer 2

True

Question 3

What does nitrogen oxidation look like?

Answer 3

NH4+> NH2OH>HNO2>HNO3

Question 4

What is hydrogenotrophy?

Answer 4

Using H2 as an electron donor

Question 5

What is methanogenesis?

Answer 5

Reduction of CO2 and other single-carbon compounds to methane

Question 6

Who can perform methanogenesis?

Answer 6

Archaea called methogens

Question 7

Why is the antenna complex used in phototrophy?

Answer 7

To maximized light absorption

Question 8

What is photosystems I?

Answer 8

Separates electrons associated with hydrogens from H2S

Question 9

What is photosystems II?

Answer 9

Found in alphaproteobacteria and separates and electron from bacteriochlorophyll

Question 10

What is oxygenic z pathway?

Answer 10

Found in cyanobacteria and eight photons are absorbed and 2 electron pairs are removed from 2 H2O to produce O2