OBJECTIVE LIFE SCIENCE
BIOCHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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lubrication of joints as a means of preventing injury
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sweating as a means of regulating body temperature
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transmitting signals and information as a means of body movement
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breathing as a means of taking in oxygen and releasing carbon dioxide
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Detailed explanation-1: -Because of hydrogen bonding, water can actually support objects that are more dense than it is. Water molecules stick to one another on the surface, which prevents the objects resting on the surface from sinking. This is why water striders and other insects can “walk” on water!
Detailed explanation-2: -The hydrogen bonds form and break afresh progressively to regulate water homeostasis, such as temperature fluctuations. Although energy is produced, the bonds help the overall temperature changes to remain stable.
Detailed explanation-3: -The subcomponents of biological molecules and their sequence determine the properties of that molecule. Living systems depend on properties of water that result from its polarity and hydrogen bonding. The hydrogen bonds between water molecules result in cohesion, adhesion, and surface tension.
Detailed explanation-4: -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.