Anabolic reactions

So far, in describing respiration and photosynthesis, we have considered those reactions whereby a microorganism may generate cellular energy from its environment. As we saw at the beginning of this chapter, one of the uses to which this may be put is the synthesis of new cellular materials. In all of the pathways described in the following

Table 6.4 Comparison of anoxygenic photosynthetic bacteria

Green

Green

Purple

Purple

sulphur

non-sulphur

sulphur

non-sulphur

Bacteriochlorophyll

c, d, e

a, c

a, b

a, b

Electron donor

H2S/reduced

Organic

H2S/reduced

Organic

s/h2

compounds

s/h2

compounds

CO2 fixation

Reverse

Calvin cycle

Calvin cycle

Calvin cycle

TCA cycle

Photoheterotrophy

No

Yes

Some

Mainly

section, the conversion of ATP to ADP is required at some point. The term biosynthesis is used to describe those reactions by which nutrients are incorporated first into small molecules such as amino acids and sugars and subsequently into biomacromolecules such as proteins and polysaccharides.

Was this article helpful?

0 0
How To Win Your War Against Bronchitis

How To Win Your War Against Bronchitis

Sick And Tired Of Your Constant Cough? Is Your Bad Immune System Leading You To The Path Of Fever And Sore Chest? You Sure Have A Reason To Panic BronchitisThere Is Always A Way Out And, This Is It Finally Discover Some Of The Most Effective Tips That Can Curb Bronchitis, And Its Repeated Bouts Learn How To Keep The Chronic Cough, And Sore Chest Away Breathe Free, And Feel The Whiff Of Fresh Air, With No Hassles

Get My Free Ebook


Post a comment