Correct answer between glucose and fructose 1-These two molecules differ in the
ID: 214750 • Letter: C
Question
Correct answer between glucose and fructose
1-These two molecules differ in the
A) number of carbon, hydrogen, and oxygen atoms.
B) types of carbon, hydrogen, and oxygen atoms.
C) arrangement of carbon, hydrogen, and oxygen atoms.
D) number of oxygen atoms joined to carbon atoms by double covalent bonds.
E) answers A, B, and C.
2.
The structures of glucose and fructose. These two molecules are
A) geometric isotopes.
B) enantiomers.
C) geometric isomers.
D) structural isomers.
E) nonisotopic isomers
Explanation / Answer
1. Glucose and fructose shares same number of carbon, hydrogen, and oxygen atoms, type of carbon, hydrogen, and oxygen atoms and the number of oxygen atoms joined to carbon atoms by double covalent bonds. They only differs in the arrangement of carbon, hydrogen, and oxygen atoms.
ANSWER: C) arrangement of carbon, hydrogen, and oxygen atoms.
2. Glucose and fructose share the same molecular formula and differs in the arrangements of atom. According to this fact, let us analyse the options.
A) Geometric isotopes: Glucose and fructose are not isotopes.
B) Enantiomers: Molecules having mirror image. So this also does not represent glucose and fructose.
C) Geometric isomers: This is the cis-trans isomerism. So this does not represent glucose and fructose.
D) Structural isomers: Molecules having same molecular formula, but differing in the structure. This represents glucose and fructose.
E) Nonisotopic isomers: This also does not represent glucose and fructose.
ANSWER: D) structural isomers.