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WorksheetsTUTORIAL: MOLECULES OF LIFE
Total questions: 10
Worksheet time: 8mins
1. Which statement is NOT a property of water?
It is a monopolar molecule
Water is a universal solvent due to its polarity
Water has high specific heat capacity
Water has a high surface tension
Which of the following statement is TRUE about carbohydrates?
All monosaccharides soluble in water.
Sucrose and lactose are example of polysaccharides.
Polysaccharides functions as long-term energy storage
molecules.
A disaccharide contains two monosaccharides that are joined through hydrolysis reaction.
Which of the following is the storage carbohydrates found in potato tuber?
sucrose
starch
glucose
fructose
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 acid consists 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.
Which of the following are TRUE for triglyceride?
I they are soluble in non-polar organic solvents
II they are not soluble in water
III they are esters formed from the reactions between fatty acids and alcohols.
I and II
I and III
II and III
I, II and III
Which of the following is produced from a condensation reaction during protein synthesis?
Fat
Water
Dipeptide
Maltose
Glutamic acid and lysine can be distinguished by
their ability to form peptide bonds.
their composition of their side chain.
the position of their carboxyl groups.
the position of their amino groups.
Which of the following is a purine?
Cytosine
Guanine
Thymine
Uracil
The two strands of polynucleotides in a DNA molecule are held together by
peptide bond.
hydrogen bond.
glycosidic bond.
phosphodiester bond.
Which of the following statements is NOT TRUE about nucleic acids?
I RNA molecule is longer than DNA molecule
II in the deoxyribose molecule, the oxygen at the second carbon is removed
III the bases involve in RNA is uracil, guanine, cytosine and adenine
IV the function of rRNA is to carry amino acid to the site of protein synthesis
I and II
II and III
I and IV
III and IV
