NURSING EXAM QUESTIONS
BIOCHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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A molecule that provides immediate energy.
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A molecule that is structurally the same, but has a different number of atoms.
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A molecule that has the same atoms, but is structurally different.
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A molecule that can be put together to make bigger molecules.
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Detailed explanation-1: -Isomerism in which the molecules have the same molecular formula but different structural formula is called structural isomerism.
Detailed explanation-2: -Isomers are molecules of the same formula but having a different arrangement of their atoms [15]. There are several types of isomers: Constitutional or structural isomers differ in the configuration (bonding) of their atoms.
Detailed explanation-3: -Isomers are molecules that have the same molecular formula, but have a different arrangement of the atoms in space. That excludes any different arrangements which are simply due to the molecule rotating as a whole, or rotating about particular bonds. For example, both of the following are the same molecule.
Detailed explanation-4: -Hence, isomers with the same molecular and structural formula are called Stereoisomers.