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WorksheetsChapter 1 (Molecules of Life)
Total questions: 15
Worksheet time: 5mins
The element of the water molecule is held together by which type of bond?
Covalent bond
Hydrogen bond
Ionic bond
Double bond
The molecules of water are able to form hydrogen bonds because,
Hydrogen is more electronegative
The water molecules is shaped like tetrahedron
The bond that hold together the atoms in water molecules are polar covalent bonds
The oxygen atom in a water molecules has a week positive charge
What determine the cohesiveness of the water molecules?
Ionic bond
Hydrogen bond
Hydrophobic interaction
Non polar covalent bond
All of the following are characteristics of monosaccharides except...
Sweet-tasting
Dissolve in water
Insoluble in water
Forming water crystal
Which of the following is NOT polysaccharide?
Glycogen
Starch
Glucose
Sucrose
Which of the following is true of both maltose and amylose?
Both polysaccharides
Both are oligosaccharides
Both contain α - glucose monomers
Both contain β - glucose monomers
Which of the following is TRUE about cellulose?
It is a polymer composed of sucrose monomers
It is a storage polysaccharides to supply energy in plant cell
It is a major structural component of plant cell wall
It is a major structural component of animal cell plasma membranes
Which of the following is the characteristics of saturated lipids which differentiate them from unsaturated lipids?
They do not contain glycerol
They contain only unbranched fatty acid
They are composed only of unbranched glycerol
They have no double bonds between their carbon atoms
The phosphate group in phospholipids is....
Polar and hydrophilic
Non- polar and hydrophobic
Ionized in water
Uncharged
Which bond is formed during the formation of the primary structure of a protein?
Peptide bond
Hydrogen bond
Disulfide bond
Phosphodiester bond
What maintains the secondary structure of a protein?
Peptide bonds
Hydrogen bonds
Disulfide bonds
Phosphodiester bonds
Which of the following is not a protein?
Hemoglobin
Cholesterol
Antibody
Insulin
The phosphodiester linkage in DNA or RNA is formed between...
Two bases
Two sugars
Sugar and a base
Sugar and phosphate
Which of the following function is the major purpose of the RNA?
Transmit genetics information to offspring
Function in the synthesis of protein
Make a copy of it, thus ensuring genetic continuity
Act as a pattern or blueprint to form DNA
Which of the following statements is TRUE to differentiate between DNA and RNA ?
RNA is double stranded while DNA is single stranded
DNA is found in the nucleus while RNA is never found in the nucleus
In DNA, adenine pairs with guanine while in RNA adenine pairs with thymine
DNA contain thymine while RNA contains uracil
