How many possible aldotetrose sugars are there?

How many possible aldotetrose sugars are there?

4 stereoisomers
Note that aldotetroses contain two nonequivalent stereogenic centers, so 22=4 stereoisomers are possible.

Is glucose an aldotetrose?

Usually, the number of carbons is appended to the term indicating the type of sugar. Based on Greek number terms, hexose indicates six carbons and pentose implies five carbons. Thus, glucose is an aldohexose and fructose is a ketohexose.

Which of the following sugars is an example of aldotetrose?

Erythrose
Erythrose → Example of aldotetrose. Hence, (A) is the correct answer. Note: One term here which has to be taken into consideration is Monosaccharides. Monosaccharides are simple sugars in which there are one oxygen atom and two hydrogen atoms for each carbon atom present in the molecule.

What are the triose sugar?

A triose is a monosaccharide, or simple sugar, containing three carbon atoms.

Which carbohydrate is an aldotetrose?

D-Glucose is an aldohexose with four stereogenic centers stacked on top of one another. It is also referred to as dextrose, grape sugar, or blood sugar. It has the empirical formula C6H12O6 ….

Is ketopentose a fructose?

Hence fructose is classified as a monosaccharide, the most important ketose sugar, a hexose, and is a reducing sugar. Thus, fructose sugar is a ketohexose. It contains six carbon atoms and a keto group.

Which carbohydrate is an Aldotetrose?

Is mannose A hexose?

The most common hexoses are glucose, galactose, mannose, and fructose. The first three are aldoses, whereas fructose is a ketose. Glucose, galactose and mannose are epimers in that they differ from one another at a single center of asymmetry.

What is a triose formula?

Molecular structure and biochemistry Sugars have carbons arranged in a straight chain or ring form with the general formula (CH2O)n, where n = 3 (triose), 5 (pentose, e.g. ribose), or 6 (hexose, e.g. glucose).

What are some examples of triose?

Two naturally occurring trioses are aldotriose (glyceraldehyde) and ketotriose (dihydroxyacetone).

What is an example of diastereomer?

Diastereomers are the stereoisomers that are non identical, do not have mirror images, and hence are non-superimposable on each other. Examples of diastereomers include cis and trans-2-butene, D-threose and D-erythrose, 2-chloro,3-bromobutane, and so on.

Which of the following is an example of aldotetrose?

Erythrose is an example of Aldotetrose. . It has one aldehyde group and so is part of the aldose family. Option D is correct. Was this answer helpful?

How many stereoisomers are possible for aldotetroses?

Note that aldotetroses contain two nonequivalent stereogenic centers, so 2 2 = 4 stereoisomers are possible. The two l -aldotetroses are not shown in Figure 13.1. d -Erythrose and l -erythrose are enantiomers, as are d -threose and d -threose.

How many enantiomeric forms can an aldotriose exist in?

This aldotriose can exist in two enantiomeric forms. Monosaccharides with multiple stereogenic centers are represented with the carbon backbone continually pushed back behind the plane of the page. A curve of atoms in a C shape results, with the attached hydrogen atoms and hydroxyl groups pointing out from the backbone of the carbon chain.