#1
Which of the following is not a biological macromolecule?
Glucose
ExplanationGlucose is a monosaccharide, not a macromolecule.
#2
Which of the following is a polysaccharide?
Starch
ExplanationStarch is a polysaccharide composed of glucose units.
#3
Which of the following is NOT a component of a nucleotide?
Fatty acid
ExplanationFatty acids are not part of the nucleotide structure.
#4
What is the monomer unit of proteins?
Amino acid
ExplanationAmino acids are the building blocks of proteins.
#5
What is the primary function of triglycerides in organisms?
To store energy for long-term use
ExplanationTriglycerides store energy in organisms for long-term use.
#6
Which of the following is NOT a type of RNA?
sRNA
ExplanationsRNA is not a recognized type of RNA.
#7
Which bond is responsible for holding together the primary structure of proteins?
Peptide bond
ExplanationPeptide bonds link amino acids in the primary structure of proteins.
#8
In which cellular organelle does protein synthesis occur?
Ribosome
ExplanationProtein synthesis occurs in ribosomes.
#9
Which of the following is a characteristic of saturated fatty acids?
They have a higher melting point compared to unsaturated fatty acids.
ExplanationSaturated fatty acids have single bonds and a higher melting point.
#10
What is the primary function of RNA polymerase?
To synthesize RNA from a DNA template
ExplanationRNA polymerase synthesizes RNA using DNA as a template.
#11
What is the function of ATP in cellular processes?
To provide energy for cellular activities
ExplanationATP is the primary energy currency of cells.
#12
Which of the following is a function of carbohydrates in living organisms?
To provide long-term energy storage
ExplanationCarbohydrates store energy for long-term use.
#13
What is the primary function of DNA polymerase during DNA replication?
To synthesize new DNA strands
ExplanationDNA polymerase synthesizes new DNA strands using a template.
#14
Which of the following is an example of a quaternary structure in proteins?
Hemoglobin
ExplanationHemoglobin consists of multiple polypeptide subunits.
#15
What is the primary function of cholesterol in cell membranes?
To enhance membrane fluidity
ExplanationCholesterol helps maintain fluidity in cell membranes.
#16
What is the role of DNA helicase during DNA replication?
It unwinds and separates the DNA double helix.
ExplanationDNA helicase separates the DNA double helix strands.
#17
Which of the following is a characteristic feature of quaternary protein structure?
It is formed by the association of multiple polypeptide subunits.
ExplanationQuaternary structure results from the association of multiple polypeptide chains.