You believe a bacterium is attaching to animal cells by binding to the carbohydrate portion of a specific glycoprotein. to test this hypothesis you pre-incubate the bacteria with various molecules and then test for inhibition of attachment to the animal cells. which result supports the hypothesis that the bacteria recognize the carbohydrate component of the animal glycoprotein? see section 5.3 (page 114) . pretreatment with the protein component alone prevents bacteria attachment to the animal cells. pretreatment with the entire glycoprotein prevents bacteria attachment to the animal cells. pretreatment with the entire glycoprotein allows bacteria attachment to the animal cells. pretreatment with the carbohydrate component alone prevents bacteria attachment to the animal cells.

Pretreatment with the protein component alone prevents bacteria attachment to the animal cells.

Explanation:

The animal glycoprotein has two distinct parts: (1) protein and (2) carbohydrate.

We believe that the given bacteria is binding to carbohydrate portion not protein portion of this glycoprotein and want to prove this fact.

If we want to prove that the bacteria binds to only the carbohydrate part of the glycoprotein we can treat the bacteria with the protein part of the glycoprotein alone. If the bacteria is unable to bind to protein component then it simply proves that the bacteria does not interact with the animal glycoprotein through protein part. It simply means that it is only carbohydrate part through which bacteria will interact with the glycoprotein.

the relative atomic mass of an element is the mass of one atom of that element, relative to 1/12th of the mass of a  1212c atom. to convert to an absolute mass in kg, it is necessary to multiply by  1.661×10−271.661×10−27.

the relative atomic mass is roughly equal to the number of neutrons, plus the number of protons, in the nucleus of the atom.

for elements with more than one stable isotope (different types of nucleus with different numbers of neutrons but the same number of protons), the quoted mass is usually the average mass, weighted by the relative abundance of the different isotopes.

your body is trying to warm itself up. or more precisely, sensors in your skin send messages to your brain to generate heat to your body.