Which characteristic best distinguishes glycolysis and the Krebs cycle from the electron transport chain? the amount of ATP produced
the location in which they occur
whether glucose is broken down
whether they occur in plants or animals

The characteristic best distinguishes glycolysis and the Krebs cycle from the electron transport chain is the amount of ATP produced. In glycolysis net ATP production is 2 ATP and in 1 Kreb's cycle 38 ATP are produced.

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.

the endomembrane system i think