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WorksheetsProperties and Molecules of Water
Total questions: 23
Worksheet time: 17mins
What is the most abundant molecule in living organisms?
Oxygen
Water
Glucose
DNA
Which property of water allows it to stick to other molecules?
Cohesion
Adhesion
C. Surface tension
Hydrophobicity
What type of bond forms between water molecules?
Covalent bonds
Ionic bonds
Peptide bonds
Hydrogen bonds
What is the monomer of proteins?
Monosaccharide
Nucleotide
Amino acid
Fatty acid
Lipids are primarily used for:
Immediate energy use
Long-term energy storage
Information storage
Catalyzing reactions
Which macromolecule is primarily responsible for storing genetic information?
Nucleic acids
Lipids
Proteins
Carbohydrates
Which of the following is NOT a polysaccharide?
Starch
Glycogen
Cellulose
Glucose
The primary structure of a protein refers to
Its 3D folded shape
Interactions between α-helices and β-sheets
The sequence of amino acids
Its quaternary structure
Which macromolecule is insoluble in water?
Proteins
Lipids
Carbohydrates
Nucleic acids
What type of reaction joins monomers into polymers?
Dehydration synthesis
Oxidation
Hydrolysis
Reduction
Enzymes are proteins that speed up chemical reactions.
True
False
Cellulose is a storage carbohydrate in plants.
False
True
Water has a high heat capacity, which helps regulate temperature.
True
False
Hydrophobic molecules are attracted to water.
True
False
DNA and RNA are both composed of nucleotides
False
True
Phospholipids are important components of cell membranes
True
False
Hydrolysis reactions break polymers into monomers.
False
True
The (a) bond is the covalent bond that links amino acids together in a protein.
The monomer of carbohydrates is called a (a) .
___ is the polysaccharide found in the exoskeletons of insects and crustaceans.
Glycogen
Chitin
Proteins
A ___ is a substance that reduces the activation energy of a chemical reaction.
Substrate
Hydrogen
Catalyst
Water molecules are polar because of the unequal sharing of (a) between atoms.
The ___ group in an amino acid determines its chemical properties
R
Amino
Glucose
Covalent bonds
Cohesion
