Which two functional groups are primarily found in sugar molecules?
carboxyl and amino
hydroxyl and carbonyl
phosphate and sulfhydryl
methyl and ethyl
Related Questions
Which polysaccharide serves as the primary energy storage molecule in animals?
Starch
Cellulose
Glycogen
Chitin
What is grape sugar?
Glucose
Fructose
Sucrose
Galactose
The storage form of glucose in plants is:
Glycogen
Cellulose
Chitin
Starch
Which is a reducing sugar?
Galactose
Gluconic acid
β- methyl galactoside
Sucrose
Why doesn't cellulose react with iodine to produce a blue color?
It lacks the helical structure necessary for iodine complexation.
It contains fructose units instead of glucose.
It is a branched polymer and cannot interact with iodine.
It is insoluble in water, preventing the reaction with iodine.
Carbohydrates, the most abundant biomolecules earth, are produced by
All bacteria, fungi and algae
Fungi, algae and green plant cells
Some bacteria, algae and green plant cells
Viruses, fungi and bacteria
Which bond is responsible for linking the sugar-phosphate backbone of RNA?
Phosphodiester bond
Hydrogen bond
Ionic bond
Disulfide bond
The cyclic structure of glucose is formed due to the reaction between which functional groups within the molecule?
Carboxyl and amino
Aldehyde and hydroxyl
Phosphate and sulfhydryl
Methyl and ethyl
Which of the following statements are incorrect?
I. Left end of a polysaccharide is called non-reducing end while right end is called reducing end
II. Starch and glycogen are branched molecules
III. Starch and glycogen are the reserve food materials of plants and animals, respectively
IV. Starch can hold iodine molecules in its helical secondary structure but cellulose being non-helical, cannot hold iodine
I and II
II and III
I and IV
III and IV
