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Metabolism can be bisected into two subcategories: catabolism and anabolism. _____takes complex organic molecules and breaks them down into simpler molecules; this is often accompanied by the _______of energy. ______builds up biomolecules from simpler substances; this is often accompanied by the ________of energy. Both pathways use simple two-carbon organic molecules (such as ______) as common intermediates. These intermediates can then enter the ______, where they are further ______to generate carbon dioxide and _____electron carriers, along with small amounts of ATP. The electrons on these carriers are finally sent through the _____to create a proton (H+) gradient. Release of this proton gradient results in the generation of _____.

a. oxidized
b. consumption
c. ATP
d. hydrolized
e. glucose
f. anabolism
g. reduced
h. an amino aid
i. citric acid cycle
k. release
l. glycolysis
m. electron transport chain
n.catabolism
o. acetyl-CoA

1 Answer

5 votes

Answer:

a. Catabolism

b. Release

c. Anabolism

d. Consumption

e. Acetyl CoA

f. Kreb's or Citric acid cycle

g. Oxidized

h. Reduced

I. Electron transport chain

j. ATP

Step-by-step explanation:

Anabolism is a type of metabolism involving the utilization or consumption of energy to synthesize complex molecules from smaller ones while Catabolism is the breakdown of complex molecules into simpler ones releasing the energy stored in them.

Acetyl CoA is an intermediate formed from pyruvate just before the Citric acid cycle. Pyruvate loses two oxygen atoms and one carbon atom to produce CO2. It is then oxidized by donating electron to NAD+ to form NADH. An Acetyl group (a two-carbon organic compound) is transferred to coenzyme A to produce Acetyl CoA.

The Acetyl CoA enters the kreb's cycle, which undergoes a series of redox, dehydration, hydration and decarboxylation reactions to produce two CO2 molecules, one ATP, and reduced forms of NADH and FADH2 molecules (reduced electron carriers).

These electron carriers transfer their electrons in the third step of cellular respiration (Electron transport chain). The electrons are passed down from one member of the ETC to another and the energy released in these electron transfers is used to form a proton gradient across the inter-membrane space of the mitochondria. The energy stored in the proton gradient is subsequently used to produce ATP.

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