#1
Which macromolecule is the primary source of energy for living organisms?
Carbohydrates
ExplanationCarbohydrates are broken down into glucose, providing energy for cells.
#2
Which macromolecule consists of long chains of amino acids?
Proteins
ExplanationProteins are made up of amino acid chains and serve various structural and functional roles.
#3
Which amino acid is commonly known as the building block of proteins?
Glycine
ExplanationGlycine is the simplest amino acid and plays a fundamental role in protein structure.
#4
Which chemical element is found in all macromolecules?
Carbon
ExplanationCarbon is the backbone of organic compounds, including macromolecules like carbohydrates, lipids, proteins, and nucleic acids.
#5
Which macromolecule forms the structural framework of cells and tissues?
Proteins
ExplanationProteins provide structural support, aiding in the formation and maintenance of cells and tissues.
#6
Which macromolecule is primarily composed of carbon, hydrogen, and oxygen?
Carbohydrates
ExplanationCarbohydrates consist of these elements and include sugars, starches, and fibers.
#7
Which macromolecule forms a protective barrier around cells and stores energy?
Lipids
ExplanationLipids create cell membranes and act as an energy reservoir in organisms.
#8
Which chemical property of carbohydrates allows them to be easily broken down into glucose?
Glycosidic bonds
ExplanationGlycosidic bonds connect sugar molecules in carbohydrates, facilitating their digestion.
#9
Which type of lipid is a major component of cell membranes?
Phospholipids
ExplanationPhospholipids make up the lipid bilayer of cell membranes, providing structural integrity.
#10
Which process involves the breakdown of large molecules into smaller ones with the addition of water?
Hydrolysis
ExplanationHydrolysis utilizes water to break chemical bonds, aiding in digestion and other metabolic processes.
#11
Which macromolecule serves as the genetic material of cells?
Nucleic acids
ExplanationNucleic acids, such as DNA and RNA, carry genetic information and enable cellular functions.
#12
Which amino acid is responsible for the formation of disulfide bonds in proteins?
Cysteine
ExplanationCysteine contains a thiol group that forms disulfide bridges, stabilizing protein structures.
#13
Which amino acid is essential for the synthesis of neurotransmitters such as serotonin and dopamine?
Tryptophan
ExplanationTryptophan is a precursor for serotonin and dopamine, important neurotransmitters regulating mood and behavior.