#1
Which biomolecule is the primary source of energy for living organisms?
Carbohydrates
ExplanationCarbohydrates are the primary source of energy due to their ability to be rapidly metabolized.
#2
Which functional group is characteristic of alcohols?
Hydroxyl
ExplanationAlcohols are characterized by the hydroxyl functional group (-OH).
#3
Which of the following is a monosaccharide?
Glucose
ExplanationGlucose is a monosaccharide, a simple sugar molecule.
#4
Which functional group is present in carboxylic acids?
Carboxyl
ExplanationCarboxylic acids contain the carboxyl functional group (-COOH).
#5
Which functional group is present in amines?
Amino
ExplanationAmines contain the amino functional group (-NH2).
#6
Which biomolecule serves as a catalyst in biological reactions?
Enzymes
ExplanationEnzymes are biological catalysts that accelerate chemical reactions.
#7
Which biomolecule serves as a long-term energy storage in organisms?
Lipids
ExplanationLipids serve as a long-term energy storage due to their high energy density.
#8
Which biomolecule is composed of amino acids linked by peptide bonds?
Proteins
ExplanationProteins are polymers of amino acids linked by peptide bonds.
#9
Which biomolecule consists of long chains of nucleotides?
Nucleic acids
ExplanationNucleic acids, such as DNA and RNA, are composed of long chains of nucleotides.
#10
Which functional group is characteristic of ketones?
Keto
ExplanationKetones are characterized by the carbonyl group (C=O) within the carbon skeleton.
#11
Which functional group is characteristic of esters?
Ester
ExplanationEsters are characterized by the ester functional group (-COO-).
#12
Which functional group is characteristic of aldehydes?
Aldehyde
ExplanationAldehydes contain the aldehyde functional group (-CHO).
#13
Which functional group is characteristic of carboxylic acid derivatives such as esters and amides?
Carbonyl
ExplanationCarbonyl group (C=O) is characteristic of carboxylic acid derivatives.
#14
Which functional group is present in aldehydes?
Aldehyde
ExplanationAldehydes contain the aldehyde functional group (-CHO).