#1
Which of the following is a monosaccharide?
Sucrose
Glucose
Cellulose
Starch
#2
What is the primary function of lipids in biological systems?
Energy storage
Structural support
Catalyzing chemical reactions
Transporting oxygen
#3
Which of the following carbohydrates is a polysaccharide?
Glucose
Fructose
Sucrose
Glycogen
#4
What is the structure of a nucleotide?
Phosphate group + nitrogenous base
Carboxyl group + amino group
Glucose + fructose
Glycerol + fatty acids
#5
Which of the following is a disaccharide?
Glucose
Fructose
Sucrose
Glycogen
#6
Which of the following is a function of proteins?
Energy storage
Regulating body temperature
Transporting gases
Catalyzing biochemical reactions
#7
Which level of protein structure involves interactions between side chains of amino acids?
Primary
Secondary
Tertiary
Quaternary
#8
Which of the following is not a type of lipid?
Triglyceride
Steroid
Glycogen
Phospholipid
#9
What is the primary structure of a protein?
Sequence of amino acids
Coiling and folding
Interactions between side chains
Assembly of multiple polypeptide chains
#10
Which of the following is a function of carbohydrates?
Energy storage
Acting as enzymes
Providing insulation
Facilitating cell communication
#11
Which of the following nucleic acids carries instructions for protein synthesis?
#12
Which of the following is a purine nitrogenous base found in DNA?
Thymine
Uracil
Cytosine
Adenine
#13
Which of the following nitrogenous bases is found in RNA but not in DNA?
Adenine
Thymine
Cytosine
Uracil
#14
What is the quaternary structure of a protein?
Sequence of amino acids
Coiling and folding
Interactions between side chains
Assembly of multiple polypeptide chains
#15
Which of the following is a function of phospholipids?
Energy storage
Catalyzing chemical reactions
Providing structural support
Forming cell membranes