Chemical Composition in a Cell

Free sample questions

Chemical Composition in a Cell — sample Biology questions with answers

1. Question 1

   Which of the following properties of water allows it to act as a good solvent?

   • AHigh specific heat capacity
   • BAdhesion
   • CPolarity
   • DLow density of ice

   Answer: C. Polarity

   Water is a polar molecule that can dissolve ionic and other polar substances.

2. Question 2

   What is the monomer of starch?

   • AFructose
   • BGalactose
   • CGlucose
   • DSucrose

   Answer: C. Glucose

   Starch is a polysaccharide composed of glucose units.

3. Question 3

   Which of the following elements are found in proteins?

   • ACarbon, hydrogen, oxygen only
   • BCarbon, hydrogen, oxygen, nitrogen
   • CCarbon, hydrogen, oxygen, nitrogen, phosphorus
   • DCarbon, hydrogen, oxygen, iron

   Answer: B. Carbon, hydrogen, oxygen, nitrogen

   Proteins contain C, H, O, N and sometimes S.

4. Question 4

   Which chemical bond is formed during the production of triglycerides?

   • APeptide bond
   • BGlycosidic bond
   • CEster bond
   • DHydrogen bond

   Answer: C. Ester bond

   Triglycerides are formed through condensation reactions between glycerol and three fatty acids to form ester bonds.

5. Question 5

   What is the monomer of nucleic acids?

   • AAmino acid
   • BNucleotide
   • CMonosaccharide
   • DFatty acid

   Answer: B. Nucleotide

   Nucleic acids (DNA and RNA) are composed of chains of nucleotides.