If
e. coli in a culture double every 20 minutes what would happen to the amount of hemoglobin that the culture could produce

It would increase exponentially

Explanation:

Based on the information given, the E. coli cells will double every 20 minutes. Assuming that these cell has a plasmid that will allow it to produce haemoglobin under the right conditions, and these conditions are met. The amount of protein that can be produced will also double. This factor is not occurring indefinitely as the bacterial cells will eventually run out of food and the very product that they are creating may become toxic.

Typically, E. coli  cells will multiply exponentially and a typical optical density (O.D.) for harvesting or stopping the growth is 0.6 to 0.8. This is usually around 12 to 16 hours.

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.

i thinking chemical change