Question 1

Which form of energy fuels cellular energetics in chemoheterotrophs?

Accepted Answer

A)   light energy from the Sun
B)   chemical energy in organic compounds
C)   electrical energy
D)   thermal energyE) None of the above
F) A) and C)

Question 2

Enzymes that are secreted by a cell to catalyze hydrolysis reactions are

Accepted Answer

A)   apoenzymes.
B)   exoenzymes.
C)   constitutive enzymes.
D)   regulated enzymes.
E)   endoenzymes.F) C) and D)
G) B) and D)

Question 3

The most likely place where an exoenzyme participates in a chemical reaction is

Accepted Answer

A)   mitochondria.
B)   within the cell membrane.
C)   lysosomes.
D)   cytopl.
E)   outside of the cell.F) B) and E)
G) B) and C)

Question 4

A type of cofactor would be

Accepted Answer

A)   vitamins.
B)   metallic ions.
C)   active sites.
D)   substrates.
E)   ribozymes.F) B) and D)
G) B) and C)

Question 5

An oxidase detection test can be used to identify certain bacteria because they lack

Accepted Answer

A)   Cytochrome c oxidase.
B)   NAD.
C)   mitochondria.
D)   ATP synthase.
E)   Coenzyme Q.F) A) and B)
G) D) and E)

Question 6

In which pathway is the most NADH generated?

Accepted Answer

A)   electron transport system
B)   Krebs cycle
C)   glycolysis
D)   alcoholic fermentation
E)   mixed acid fermentationF) A) and B)
G) D) and E)

Exam 8: An Introduction to Microbial Metabolism: the Chemical Crossroads of Life

A type of cofactor would be