Prepare for NEET Biology Biomolecules with MCQs & PYQs on NEET.GUIDE. Get free practice, previous year questions, and expert explanations of carbohydrates, proteins, and more.
Which two functional groups are primarily found in sugar molecules?
carboxyl and amino
hydroxyl and carbonyl
phosphate and sulfhydryl
methyl and ethyl
Glucose, a simple sugar, contains which characteristic functional groups?
ketone and carboxyl
aldehyde and hydroxyl
phosphate and amino
sulfhydryl and methyl
Which of the following pairs of functional groups is responsible for the characteristic properties of sugars like sweetness and reactivity?
Carboxyl and amino
Carbonyl and hydroxyl
Phosphate and sulfhydryl
Methyl and ethyl
A molecule is found to contain multiple hydroxyl groups and a ketone functional group. To which class of biomolecules does it most likely belong?
Lipids
Proteins
Nucleic Acids
Carbohydrates
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
Acidic amino acids carry two -COOH and one groups per molecule. Keeping this in mind, select the correct pair of acidic amino acid
Lysine and arginine
Aspartic acid and glutamic acid
Glycine and alanine
Both (a) and (b)
Amino acids the substituted methanes. Name the four substituent groups occupying the four valency positions
Hydrogen, carboxyl group, amino group and a variable group (R )
Two carboxyl groups amino group and OH
Two hydrogen, one carboxyl group, amino group and a variable group (R )
Two amino groups, one hydrogen and one carboxyl group
Amino acids are organic compounds and are called Ξ±-amino acids. Why?
Amino acids are organic compounds containing an amino group and acidic group as substituents n two different carbons
Amino acids are organic compounds containing an amino group and an acidic group as substituents on the same carbon
Amino acids are inorganic compounds containing an amino group and acidic group as substituents on two different carbons
Amino acids are inorganic compounds containing an amino group and acidic group as substituents on the same carbon
A fatty acid has a carboxyl group attached to R group. The R group could be a
Methyl
Ethyl
Higher number of groups (1 to 19 carbons)
All of the above
The physical and the chemical compositions of amino acids are essentially of the
Only the carboxyl group
Only the R-functional group
Amino, carboxyl and R groups
Only amino group
