You inoculate bacteria in a broth culture and bacteria only grew at the very bottom of the tube. how would you best describe the oxygen utilization of this bacterium?

as an anaerobic bacteria

Explanation:

These kind of bacteria do not need oxygen to survive, could it be that is a kind of facultative anaerobic bacteria, that means that sometimes they use oxygen for some processes and sometimes they do not need it.

Another possibility is that they are microaerophyls, that means, that they are going to use some oxygen to it metabolism but in a very small quantities.

the best answer is d because the strong cohesion is caused by the ability of water molecules to undergo hydrogen bonding.

a is incorrect because when water solidifies, it becomes   ice, which expands and occupies a bigger volume for the same mass of water in its liquid state.

b is incorrect because water has high surface tension. besides bonding to itself it hydrogen bonds to other molecules at the top decreasing possibility for breaking of attractive forces.

c is incorrect because the water molecule has oxygen which is highly electronegative and so pulls the electron pair towards itself creating a dipole moment, making the molecule polar.

e is incorrect because water has strong adhesion, ability to stick to other molecules such as glass because of this molecules having stronger hydrogen bonding than water.