WorksheetsChapter 1.1-1.5 Molecules of life K1P4
Total questions: 20
Worksheet time: 14mins
One water molecule can form hydrogen bond to a maximum of ............................... water molecules
4
3
2
1
Water can form intermolecular bond between other water molecules, name this bond
Hydrogen bond
Ionic bond
Covalent bond
Disulfide bridge
what is the angle between the hydrogen atom in a water molecules?
104.5o
90o
104o
94.5o
Why water molecule is a polar molecule?
Partially negative charged Oxygen atom
Partially positive charge Hydrogen atom
Partially positive charged Oxygen atom
Partially negative charged Hydrogen atom
Which of the following is NOT a properties of water?
Universal Solvent
Low viscosity
High specific heat capacity
Low surface tension
Identify the sugar molecule above
α-glucose
β-glucose
Fructose
Galactose
Maltose is a Disaccharide that consist of ................................ as monomers
α-glucose + α-glucose
α-glucose + fructose
galactose + β-glucose
β-glucose+ β-glucose
Which of the following are examples of Polysaccharides?
Starch
Cellulose
Glycogen
Collagen
Which of the following is not a general features of Lipids?
Store more energy than Carbohydrate
Higher density than water
Insoluble in water but soluble in organic solvent
Compound that consist of Carbon, Hydrogen, Oxygen, Phosphorus and Nitrogen,
A protein polymer is known as
Polypeptide
Dipeptide
Amino Acid
Peptide
Amino acid is an amphoteric molecule because......
It consist of both acidic and basic groups.
It consist of both Positive and Negative group
It consist of both Nitrogen and Carbon Group
It consist of R group/ Side chain
Amino acids are groups based on R group/ Side chain into the following groups
Non-polar
Polar
Acidic
Basic
Which of the following bonds between amino acids breaks due to high temperature (>40o)
Hydrogen bonds
Ionic bonds
Disulfide bridges
intramolecular covalent bonds
Which of the following bonds between amino acids remain unbroken even under extreme pH condition?
Covalent bonds
Disulfide bridges
Ionic bonds
Hydrogen bonds
Protein may be classed into the following classes based on its structure.
Fibrous protein
Globular protein
Conjugated protein
Transport protein
The monomer of Nucleic acids are known as
Nucleotide
RNA
DNA
Polynucleotide
A nucleotide consist of the following components
Phosphate group
Nitrogenous base
Pentose Sugar
Glycerol
Which of the following are types of RNA?
Messenger RNA
Ribosomal RNA
Transfer RNA
Transport RNA
Which of the following nitrogenous bases pair incorrectly?
Adenine==Thymine
Adenine==Uracil
Guanine==Cytosine
Uracil==Thymine
Which of the following base is not present in a RNA molecules?
Adenine
Uracil
Guanine
Thymine
