Select all that apply. Why are all hyperthermophiles members of the Archaea, not

ID: 52114 • Letter: S

Question

Select all that apply. Why are all hyperthermophiles members of the Archaea, not the Bacteria or Eukarya?

-Only Archaea have phospholipids with fatty acis tails, which pack better than isoprenoid alcohols.

-Proteins of Archaea contain unique heat-stable amino acids not found in proteins of Bacteria.

-All environments where hyperthermophiles tail-to-tail to make the membrane a monolayer.

-Only Archaea have phospholipids with isoprenoid alcohol tails, which pack better than fatty acids.

-Only Archaea have ester-linked phospholipids, which are more heat-stable than ether linkages.

-Only Archaea have ether-linked phospholipids, which are more heat-stable than ether linkages.

-Only Archaea have topoisomerases that wind DNA tighter to maintain its stability.

-Onyl Archaea maintain the packing of phospholipids with ring-containing hopanoid molecules.

-Phototrophs cannot live at high temperatures, and all the chemotrophs are Archaea.

Answer:

Only Archaea have phospholipids with fatty acis tails, which pack better than isoprenoid alcohols.

Only Archaea have ether-linked phospholipids, which are more heat-stable than ether linkages

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