Which atoms make up the ring in the cyclic form of glucose? a) 5 carbon atoms b) 5 carbon atoms and 1 oxygen atom c) 4 carbon atoms and 4 oxygen atoms d) 6 carbon atoms

The correct answer is option B.

Explanation:

Glucose is a monosaccharide carbohydrate with molecule formula of .

In glucose both alcohol and aldehyde groups are present within a molecule due to which molecule undergoes inter molecular reaction to give hemiacetal. This hemiacetal is six membered ring of one oxygen atom and 5 carbon atom.

In an image attached Fischer projection of D-glucose and cyclic form of α-D-glucose in shown.

The correct answer is Option B.

Explanation:

Glucose is an organic compound which is made up of carbon, oxygen atom hydrogen atoms. The chemical formula of glucose is

This compound contains 2 types of functional groups, which are alcohol and aldehyde.

Because of the presence of these two functional groups, the molecule undergoes inter molecular reaction to form hemiacetal. During this process, water is released.

The hemiacetal form of the molecule is known as ring form of glucose which is made up of 5 carbon atoms and 1 oxygen atom.

Hence, the correct answer is Option B.

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most historians agree that gabriel mouton, the vicar of st. paul’s church in lyons, france, is the “founding father” of the metric system. he proposed a decimal system of measurement in 1670. mouton based it on the length of one minute of arc of a great circle of the earth (now called a nautical mile, 1852 meters). he also proposed the swing-length of a pendulum with a frequency of one beat per second as the unit of length (about 25 cm). a pendulum beating with this length would have been fairly easy to produce, thus facilitating the widespread distribution of uniform standards. over the years, his work was revised, improved, and extended by a number of french scientists.

the political sponsor of weights and measures reform in the french revolutionary national assembly was the bishop of autun, better known as talleyrand. under his auspices, the french academy appointed several committees to carry out the work of developing a usable system of weights and measures for france. one of the committees recommended a decimalized measurement system based upon a length equal to one ten-millionth of the length of a quadrant of the earth’s meridian (i.e., one ten-millionth of the distance between the equator and the north pole).