chapter-24.2

Question 1

In cellular respiration, chemotrophs

Answer 1

use organic compounds / high potential energy as an electron donor

The final electron donor is oxygen

Carbon dioxide is produced and water

Question 2

Photosynthesis

Answer 2

carbon dioxide, sunlight and to create sugar and oxygen

Question 3

what is anxogenic photosynthesis?

Answer 3

where oxygen is limited or absent and an electron other than water is used as a final electron acceptor

Question 4

what are alternative to using oxygen for photosynthesis?

Answer 4

hydrogen sulfide and iron

Question 5

in anaerobic environments …. and … are used as electron acceptors to fuel respiration

Answer 5

sulfate ions and nitrate

Question 6

fermentation is the…

Answer 6

partial oxidation of organic compounds no electron acceptor needed

Question 7

heterotrophs

Answer 7

consumes organic compounds for food cannot produce their own food

Question 8

autotrophs

Answer 8

uses inorganic compounds to make their own food

Question 9

blue and green pigment

Answer 9

cyanobacteria, oxgygen bacteria that like to live in rich oxygen environments

Question 10

purple pigment

Answer 10

for anoxygenic photosyntheic bacteria there is no oxygen but their is a light source

Question 11

why is light able to penetrate the microbial mat deeply?

Answer 11

because of bacteriachrlophyll which is used by anoxygenic photosyenthic bacteria

Question 12

chemotroph

Answer 12

gets energy from chemical compounds

Question 13

phototroph

Answer 13

gets energy from the sun