Question 1

Light energy is transferred from the antenna to the reaction center in purple phototrophic bacteria in packets called

Accepted Answer

A)  excitons. 
B)  transferons. 
C)  superoperons. 
D)  humerons. 
A)  excitons. 
B)  transferons. 
C)  superoperons. 
D)  humerons.

Question 2

Which of the following are NOT found within the photosynthetic gene cluster of Rhodobacter (a purple phototrophic bacterium)?

Accepted Answer

A)  genes encoding proteins involved in carotenoid biosynthesis 
B)  genes encoding proteins involved in bacteriochlorophyll biosynthesis 
C)  genes encoding reaction center and light- harvesting photocomplexes 
D)  genes encoding proteins involved in phycobiliprotein biosynthesis 
A)  genes encoding proteins involved in carotenoid biosynthesis 
B)  genes encoding proteins involved in bacteriochlorophyll biosynthesis 
C)  genes encoding reaction center and light- harvesting photocomplexes 
D)  genes encoding proteins involved in phycobiliprotein biosynthesis

Question 3

Each chlorophyll and bacteriochlorophyll type is distinguished by its absorption spectrum.

Accepted Answer

A) True 
 B)False

Question 4

The master regulatory signal governing transcription of the photosynthetic gene cluster in anoxygenic phototrophs is

Accepted Answer

A)  H2. 
B)  N2. 
C)  O2. 
D)  CO2. 
A)  H2. 
B)  N2. 
C)  O2. 
D)  CO2.

Question 5

Chlorophyll a is green because it absorbs

Accepted Answer

A)  red and green light and transmits blue light. 
B)  green light and transmits red and blue light. 
C)  green light and transmits nothing. 
D)  red and blue light and transmits green light. 
A)  red and green light and transmits blue light. 
B)  green light and transmits red and blue light. 
C)  green light and transmits nothing. 
D)  red and blue light and transmits green light.

Exam 13: Phototrophy, Chemolithotrophy, and Major Biosyntheses

Light energy is transferred from the antenna to the reaction center in purple phototrophic bacteria in packets called

Which of the following are NOT found within the photosynthetic gene cluster of Rhodobacter (a purple phototrophic bacterium)?

Each chlorophyll and bacteriochlorophyll type is distinguished by its absorption spectrum.

The master regulatory signal governing transcription of the photosynthetic gene cluster in anoxygenic phototrophs is

Chlorophyll a is green because it absorbs

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