Which of the following best describes similarities between archae and eubacteria?
a) both can undergo binary fission and are autotrophs.
b) both are able to withstand extreme temperatures and lack of oxygen.
c) both have single-stranded, helical dna and cell walls.
d) both lack membrane-bound organelles and are single-celled.

When in solution, a molecule that moves slowly across an artificial membrane moves rapidly across a plasma membrane. this molecule rapidly enters the cell regardless of whether its concentration is higher inside or outside the cell. using this information, which transport mechanism is most likely to be responsible for the movement of the molecule across a plasma membrane? view available hint(s)when in solution, a molecule that moves slowly across an artificial membrane moves rapidly across a plasma membrane. this molecule rapidly enters the cell regardless of whether its concentration is higher inside or outside the cell. using this information, which transport mechanism is most likely to be responsible for the movement of the molecule across a plasma membrane? active transportexocytosis

Which is an example of a vestigial structure? a. tail of a monkey b. fin of a fish c. flower of a plant d. tailbone of a human

Chitin is a chemical component of the cell walls