Archaea differ from bacteria in that archaea

a) have diverse cell wall compositions
b) lack nuclei
c) use organic compounds for food
d) reproduce by binary fission
e) are prokaryotic

The correct answer is A) Have diverse cell wall compositions

Explanation:

Both bacteria and archaea comes under prokaryotes because they both lack a membrane-bound nucleus. The difference between archaea and bacteria is in their cell wall composition.

The bacterial cell wall is made up of peptidoglycan and the archeal cell wall is made up of pseudo-peptidoglycan. In bacteria, peptidoglycan contains N acetyl muramic acid and N acetyl glucosamine unit but in archaea, the N acetyl muramic unit is replaced by some other unit and the linkage of two units is also different in archaea. So the right answer is A.

A) Have diverse cell wall compositions

Explanation:

The Archaea bacteria are the unicellular prokaryotes which share common features with the Eubacteria and the Eukaryotes.

Like Eubacteria the Archaea do not possess a well-defined nucleus, they reproduce by binary fission, use a variety of organic compounds as food but the difference between them is the composition of the cell wall.

The cell wall of archaea bacteria differs from that of the eubacteria as the cell wall of eubacteria contains the peptidoglycan whereas the archaebacteria do not possess peptidoglycan but a similar molecule with different sugar called pseudo-peptidoglycan.

Thus, Option-A is the correct answer.

false because ozone (o3) depletion does not cause global warming, but both of these environmental problems have a common cause: human activities that release pollutants into the atmosphere altering it.

global warming is caused primarily by putting too much carbon dioxide into the atmosphere when coal, oil, and natural gas are burned to generate electricity or to run our cars.

explanation:

water is a polar molecule. a chemical bond is a force of attraction between atoms or ions. bonds form when atoms share or transfer valence electrons. atoms form chemical bonds to achieve a full outer energy level, which is the most stable arrangement of electrons. so, false

explanation:

in h2o molecule, two water molecules are bonded by a hydrogen bond but the bond between two h - o bonds within a water molecule are covalent. the greater the electronegativity difference, the more ionic the bond is. bonds that are partly ionic are called polar covalent bonds. nonpolar covalent bonds, with equal sharing of the bond electrons, arise when the electronegativities of the two atoms are equal.