« previous next »

Author Question: Which catabolic processes may have been used by cells on ancient Earth before fr (Read 1415 times)

TI

  • Sr. Member
  • ****
  • Posts: 434
on: Jun 12, 2013
Which catabolic processes may have been used by cells on ancient Earth before free oxygen became available?
A) glycolysis and fermentation only
B) glycolysis and the citric acid cycle only
C) glycolysis, pyruvate oxidation, and the citric acid cycle
D) oxidative phosphorylation only
E) glycolysis, pyruvate oxidation, the citric acid cycle, and oxidative phosphorylation, using an electron acceptor other than oxygen


coco

  • Hero Member
  • *****
  • Posts: 739
Reply #1 on: Jun 13, 2013
Definitely E. 100 percent certain ;)


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

TI

  • Sr. Member
  • ****
  • Posts: 434
Reply #2 on: Jun 17, 2013
Marking this solved, thanks Coco :D


« previous next »
 

Did you know?

ACTH levels are normally highest in the early morning (between 6 and 8 A.M.) and lowest in the evening (between 6 and 11 P.M.). Therefore, a doctor who suspects abnormal levels looks for low ACTH in the morning and high ACTH in the evening.

Did you know?

Less than one of every three adults with high LDL cholesterol has the condition under control. Only 48.1% with the condition are being treated for it.

Did you know?

There can actually be a 25-hour time difference between certain locations in the world. The International Date Line passes between the islands of Samoa and American Samoa. It is not a straight line, but "zig-zags" around various island chains. Therefore, Samoa and nearby islands have one date, while American Samoa and nearby islands are one day behind. Daylight saving time is used in some islands, but not in others—further shifting the hours out of sync with natural time.

Did you know?

When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.

Did you know?

Certain chemicals, after ingestion, can be converted by the body into cyanide. Most of these chemicals have been removed from the market, but some old nail polish remover, solvents, and plastics manufacturing solutions can contain these substances.

Tight junctions between adjacent intestinal cells Tight junctions between adjacent intestinal cells
Human embryonic stem cells Human embryonic stem cells
Earth’s Heat Budget Earth’s Heat Budget
The ras proto-oncogene encodes a signal-transduction protein that processes signals for cell divisio The ras proto-oncogene encodes a signal-transduction protein that processes signals for cell divisio
Light micrograph of cells in a strand of Chladophora Light micrograph of cells in a strand of Chladophora
Earth’s Early Atmosphere Earth’s Early Atmosphere
Video: Subunits of DNA And Semi Conservative Replication

For a complete list of videos, visit our video library