The reason why bacteria doesnot grow in high concentration of sugar is because of sugar’s high osmotic and dehydrating effects. Sugar, whether in solid or aqueous form, attempts to reach equilibrium with the sugar content of the food product with which it is in contact. This has the effect of drawing avail able water from within the food to the outside and inserting sugar molecules into the food interior. The result is a reduction of the so-called product water activity (aw), a measure of unbound, free water molecules in the food that is necessary for microbial survival and growth.Sugar’s other antimicrobial mechanisms include interference with a microbe’s enzyme activity and weakening the molecular structure of its DNA (Scientific American Journal).

Correct Option: C

The reason why bacteria doesnot grow in high concentration of sugar is because of sugar’s high osmotic and dehydrating effects. Sugar, whether in solid or aqueous form, attempts to reach equilibrium with the sugar content of the food product with which it is in contact. This has the effect of drawing avail able water from within the food to the outside and inserting sugar molecules into the food interior. The result is a reduction of the so-called product water activity (aw), a measure of unbound, free water molecules in the food that is necessary for microbial survival and growth.Sugar’s other antimicrobial mechanisms include interference with a microbe’s enzyme activity and weakening the molecular structure of its DNA (Scientific American Journal).

The greenhouse effect occurs when Earth’s atmosphere traps solar radiation because of the presence of certain gases, causing the heating of the earth. These greenhouse gases include water vapor, CO₂, methane, nitrous oxide (N₂O) and other gases, according to the Environmental Protection Agency (EPA).

Correct Option: C

The greenhouse effect occurs when Earth’s atmosphere traps solar radiation because of the presence of certain gases, causing the heating of the earth. These greenhouse gases include water vapor, CO₂, methane, nitrous oxide (N₂O) and other gases, according to the Environmental Protection Agency (EPA).

Vitamins are classified as either fat soluble (vitamins A, D, E and K) or water soluble (vitamins B and C).The fat soluble vitamins are soluble in lipids (fats); water-soluble vitamins are those that dissolve in water upon entering the body. Because of this, our body cannot store excess amounts of water-soluble vitamins for later use.

Correct Option: B

Vitamins are classified as either fat soluble (vitamins A, D, E and K) or water soluble (vitamins B and C).The fat soluble vitamins are soluble in lipids (fats); water-soluble vitamins are those that dissolve in water upon entering the body. Because of this, our body cannot store excess amounts of water-soluble vitamins for later use.

Meibomian glands are the tiny oil glands which line the margin of the eyelids (the edges which touch when the eyelids are closed). These glands secrete oil which coats the surface of our eyes and keeps the water component of our tears from evaporating (drying out). Together, the water and the oil layer make up the tear film.

Correct Option: A

Meibomian glands are the tiny oil glands which line the margin of the eyelids (the edges which touch when the eyelids are closed). These glands secrete oil which coats the surface of our eyes and keeps the water component of our tears from evaporating (drying out). Together, the water and the oil layer make up the tear film.

The Kyoto Protocol is an international agreement linked to the United Nations Framework Convention on Climate Change, which commits its Parties by setting internationally binding emission reduction targets. It was adopted in Kyoto, Japan, on 11 December 1997 and entered into force on 16 February 2005.

Correct Option: B

The Kyoto Protocol is an international agreement linked to the United Nations Framework Convention on Climate Change, which commits its Parties by setting internationally binding emission reduction targets. It was adopted in Kyoto, Japan, on 11 December 1997 and entered into force on 16 February 2005.