Under anaerobic conditions (a lack of oxygen), the conversion of pyruvate to acetyl coa stops. which of these statements is the correct explanation for this observation? which of these statements is the correct explanation for this observation? a) oxygen is required to convert glucose to pyruvate in glycolysis. without oxygen, no pyruvate can be made. b)atp is needed to convert pyruvate to acetyl coa. without oxygen, no atp can be made in oxidative phosphorylation. c)oxygen is an input to acetyl coa formation. d) in the absence of oxygen, electron transport stops. nadh is no longer converted to nad+, which is needed for the first three stages of cellular respiration.

The endoplasmic reticulum (er) is an organelle in some cells. in these cells, it is continuous with the nuclear membrane and forms a large part of the cell\'s total membrane. sort the phrases below as describing rough er, smooth er, both, or neither. note: if you answer any part of this question incorrectly, a single red x will appear indicating that one or more of the phrases are sorted incorrectly.1) found in prokaryites and uekaryotys2) involved in protein synthesis3) involve in lipid synthesis4) contains molecular chaperones in lumen5) bound with ribosomes6) involved in toxin or drug metabolism7) large systemot internnected tubules,vesicles, and sacs8) "packages" enzymes in vesicles for secretion.

The table shows dates and appearance of index fossils. which rock layers can be dated most precisely? a) a layer containing both a fossil 4 and a fossil 3 b) a layer containing both a fossil 2 and a fossil 3 c) a layer containing both a fossil 1 and a fossil 4 d) a layer containing both a fossil 1 and a fossil 2

Mineral rich water heated by newly found oceanic crust escapes through cracks in the ocean floor called