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WorksheetsQuiz 1 : Molecules of Life
Total questions: 20
Worksheet time: 13mins
Tendency of the same molecules to stick to one another
cohesion
adhesion
polar molecules
capillary action
Which statement is NOT a property of water?
Water has its maximum density at 0 degree Celcius.
Water is a universal solvent due to its polarity.
Water has high specific heat capacity.
Water has high latent heat of vaporization.
Which pair is MISMATCHED?
Monosaccharide: Maltose
Disaccharide: Sucrose
Polysaccharide: Cellulose
None of these pairs are correctly matched.
Which of these terms is most INCLUSIVE?
Monosaccharide
Polysaccharide
Disaccharide
Carbohydrate
Which of the following is TRUE about carbohydrates?
All monosaccharides soluble in water
Sucrose and lactose are example of polysaccharides.
Polysaccharides function as long-term storage molecules.
A disaccharide contains two monosaccharides that are joined through hydrolysis reaction.
Carbohydrate molecules ...
serve as structural components of human cell walls.
form the regulatory compounds known as enzymes.
are a source of energy.
contain the genetic information of a cell and help protect vital organs from damage.
Which of the following is the storage carbohydrate found in potato tuber?
Sucrose
Starch
Glucose
Fructose
The process illustrated in the figure is called ...
condensation.
protein synthesis.
hydrolysis.
denaturation.
The products of the process in the accompanying figure are ...
amino acids.
molecules of glycerol.
representative of a glycosidic linkage.
monosaccharides.
Which one of the following carbohydrates is the MOST structurally complex?
Sucrose
Fructose
Cellulose
Glucose
Which of the following illustrates hydrolysis?
The reaction of two monosaccharides to form a disaccharide.
The reaction of two amino acids to form a dipeptide.
The reaction of a hydrogen atom and a hydroxide ion to from water.
The reaction of a fat to form glycerol and fatty acids.
A carbohydrate energy storage molecule found in a animal liver and muscle cells ...
starch.
glycogen.
cellulose.
fatty acids and cholesterol.
Which of the following statement is TRUE about lipids?
Phospholipids have hydrophilic tails and hydrophobic heads.
Glycerol, a building molecule of triglyceride is soluble in water.
Fatty acids consist of a short hydrocarbon chain with a -OH group at one end.
Saturated fatty acids have double bond while unsaturated fatty acid has no double bond between the carbon atoms.
What is a polar molecule?
a molecule with opposite charges at opposite ends
a molecule with no charge
a molecule with identical charges at opposite ends
a molecule with an unequal number of protons and electrons
A insect like a water strider can skate along the top of a pond because:
covalent bonds result in water cohesion
hydrogen bonds result in water cohesion (surface tension)
low surface tension of water
Which of the statements below correctly describes a disaccharide?
Sugars formed from two subunits joined together by a peptide bond that forms during a hydrolysis reaction.
Sugars formed from two subunits joined together by a glycosidic bond that forms during a hydrolysis reaction.
Sugars formed from two subunits joined together by a glycosidic bond that forms during a condensation reaction.
Starches formed from two subunits joined together by a peptide bond that forms during a condensation reaction.
Where are the double bonds located in unsaturated lipid molecules?
Within fatty acid chains and within glycerol molecules
Within fatty acid chains only
Between glycerol molecules and fatty acid chains
Within glycerol molecules only
