Which of these options correctly identifies the aerobic and anaerobic phases of cellular respiration? (that is, which phases require oxygen to proceed or not) a.
Anaerobic: glycolysis and electron transport chain

Aerobic: Krebs cycle

b.
Anaerobic: glycolysis

Aerobic: Krebs cycle and fermentation

c.
Anaerobic: glycolysis

Aerobic: Krebs cycle and electron transport chain

d.
Anaerobic: glycolysis and Krebs cycle

Aerobic: electron transport chain

If scientists are wrong about earth's age based on radioactive material and the decay rates are really much faster, how would nuclear power plants be affected?

How does friction with the atmosphere affect the speed of an artificial satellite

Which of these is true of the cytoplasm of an unfertilized egg? a. it is an unevenly distributed mixture of mrna, proteins, organelles, and other substances. b. it does not contain substances that are important in directing development. c. these substances are supplied by the sperm. d. it does not contain substances that are important in directing development. e. development is directed solely by the surrounding cells. f. it is a homogeneous mixture of mrna, proteins, organelles, and other substances. g. it does not contain substances that are important in directing development. h. these substances are produced by the dna of the fertilized zygote.