Question

1) When in a watery environment, which type of bond is typically weakest?

Select one:

a. A hydrogen bond

b. A polar covalent bond

c. An ionic bond

d. A nonpolar covalent bond

e. A savings bond

2) In a lactose intolerant individual, gradually introducing milk in to their diet can cause that person to produce lactase

Select one:

True

False

Answer 1

1. Option C is the correct answer.

In water ionic bonds are very weak. Due to the presence of water the strength of ionic bonds is really weak approximately about kcal/mole. But in the core of protein much deeper where water is excluded very often, these ionic bonds can be much more influential.

Example: Ionic bonds may be strong in salt crystals but when these salt crystals are dissolved in water, each ion is surrounded by water molecules and these water molecules inhibit the ions which are oppositely charged to come closer to each other and form ionic bonds.Since all the cells in our body are mainly consist of water, the free ionic bonds are given less importance compared to water. So, basically interaction between the oppositely charged ions is very minimal in watery environment.

2.  True

Gradually introducing milk in to the diet of lactose intolerant individuals can cause that person to produce lactase.to Lactose intolerant people can increase milk intake and they can start consuming small amounts of milk more often this will help lactose production stimulation. This way they can challenge their system to produce lactase.

Populations of gut bacteria are comparatively different in lactose intolerant people as they avoid consuming dairy products, when compared to lactose tolerant people. So, if the lactose intolerant people start to consume small amounts of milk products they can gradually improve tolerance as well as they can alter the composition of the gut bacteria which is close to the gut bacteria populations in lactose tolerant people.