Which is one of the most important differences between prokaryotes and eukaryotes? . a. the cytoplasm in eukaryotes does not contain any organelles but that prokaryotes does. b. eukaryotes are much smaller than prokaryotes. c. prokaryotes do not have a well defined nucleus, but eukaryotes do.

The correct answer is C.prokaryotes do not have a well defined nucleus, but eukaryotes do.

Explanation:

Prokaryotes are the organism that does not contain a true nucleus that means a membrane-bound nucleus is absent in prokaryotes but in eukaryotes, membrane-bound and well defined nucleus is present which contains the genetic material of eukaryotic cell.

As prokaryotic cell does not contain any well-defined nucleus the genetic material of prokaryotes are present in the cytoplasm of the cell and the process of transcription and translation takes place simultaneously because there no nucleus to divide these process.  Therefore the correct answer is C.

lunar landing mission. apollo 11 was the first manned mission to land on the moon. the first steps by humans on another planetary body were taken by neil armstrong and buzz aldrin on july 20, 1969. the astronauts also returned to earth the first samples from another planetary body.

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.