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WorksheetsBIOMOLECULES AND BOND FORMATION
Total questions: 20
Worksheet time: 7mins
Which molecule would be absorbed directly into the bloodstream during digestion?
Starch
Glycogen
Glucose
Cellulose
What is the bond formed from the combination of two thiol group?
Covalent bond
Hydrogen bond
Van der Waal force
Disulphide bond
(a) is the primary macromolecule responsible for storing and transmitting genetic information in cells.
If phosphodiester bonds in DNA were broken, which structure would be directly disrupted?
Hydrogen bonding between base pairs
The sugar phosphate backbone
The amino acid sequence
The glycosidic linkage
Identify the three atoms that when covalently bonded to hydrogen, allow intermolecular hydrogen bonding to take place.
Oxygen, Hydrogen and Sulfur
Nitrogen, Oxygen and Chlorine
Fluorine, Nitrogen and Oxygen
Carbon, Hydrogen and Bromine
Which of the following statements most accurately explains the formation of an ionic bond?
Atoms share electrons equally
Atoms transfer electrons to form charged ions
Atoms share a pair of electrons unequally
Attraction between hydrogen and nitrogen only
In the formation of proteins, amino acids are connected through a specific type of covalent bond. Which of the following bonds is directly responsible for linking amino acids in a polypeptide chain?
Glycosidic bond
Peptide bond
Phosphodiester bond
Hydrogen bond
Among the following biomolecules, which one primarily functions as a reservoir for long-term energy storage in living organisms?
Proteins
Carbohydrates
Vitamins
Lipids
Which statement about phospholipid membrane fluidity is CORRECT?
Peptide bonds hold phospholipids together
Increased hydrogen bonding, increases membrane fluidity
Hydrophobic interactions allow lateral movement of phospholipids
Ionic bonds rigidly fix phospholipids in position
Dispersion forces (London forces) are present in which of the following?
Only molecules that have permanent dipoles
Only non-polar molecules
All atoms and molecules, regardless of polarity
Only molecules that can form hydrogen bonds
At higher temperatures, phospholipid membranes remain intact mainly because of:
Strong covalent bonds between phospholipids
Hydrophobic interactions among fatty acid tails
Hydrogen bonds between phosphate groups
Ionic bonds linking membrane proteins
There are commonly (a) natural amino acid in total that are used as building blocks for protein.
Cellulose is a monosaccharide that forms plant cell walls.
False
True
The weakest force between molecules, caused by tiny, temporary movements of electrons, is called (a) .
Which bond is formed between amino acids in proteins?
Glycosidic bond
Ester bond
Peptide bond
Hydrogen bond
Lipids play several critical roles in living organisms. Which of the following is not a primary function of lipids?
Serving as a long-term energy storage
Forming the structural framework of cell membranes
Acting as a source of genetic information
Providing insulation and protection for organs
The smallest building blocks that link together to produce carbohydrates are called (a) .
(a) refers to the organic compounds that are generally insoluble or only slightly soluble in water
The collective term for weak, short-range forces acting between neutral atoms and molecules is known as :
Covalent bonds that involve electron sharing
Hydrogen bonds formed between polar molecules
Van der Waals forces resulting from transient interactions
Peptide bonds linking amino acids
Which of the following biomolecules primarily constitutes the structural framework of cell membranes, providing both fluidity and selective permeability?
Proteins
DNA
Starch
Lipids
