BIOMOLECULES AND ENZYMES

BIOLOGY

PROTEINS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Polar molecules form hydrogen bonds with each other. Which properties of water result from its molecules being polar? 1 good solvent 2 high specific heat capacity 3 high surface tension 4 cohesive
A
A 1, 2, 3 and 4
B
B 1, 2 and 3 only
C
C 1, 2 and 4 only
D
D 3 and 4 only
Explanation: 

Detailed explanation-1: -Answer and Explanation: Two properties of water that result from the polar bonding between its molecules are cohesion and adhesion.

Detailed explanation-2: -The property of cohesion describes the ability of water molecules to be attracted to other water molecules, which allows water to be a “sticky” liquid. Hydrogen bonds are attractions of electrostatic force caused by the difference in charge between slightly positive hydrogen ions and other, slightly negative ions.

Detailed explanation-3: -Hydrogen bonds cause water to be exceptionally attracted to each other. Therefore, water is very cohesive. We see evidence of water’s cohesiveness every day – in water drops and in streams of water.

Detailed explanation-4: -As a result of water’s polarity, each water molecule attracts other water molecules because of the opposite charges between them, forming hydrogen bonds. Water also attracts, or is attracted to, other polar molecules and ions, including many biomolecules, such as sugars, nucleic acids, and some amino acids.

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