9th Class Biology Chapter 6 TestBiomolecules

Q1. Multiple choice questions (Attempt all · 10 × 1 = 10)

1.  What is sucrose composed of?

   1.  Two glucose molecules

   2.  Two fructose molecules

   3. Glucose and fructose molecules

   4. Galactose and lactose molecules

2. %age of the protein in dry mass of protoplasm:

   1. 18

   2. 15

   3. 50

   4. 10

3. What are proteins defined as?

   1. Polymers of carbohydrates

   2. Polymers of amino acids

   3. Polymers of lipids

   4. Polymers of nucleic acids

4. %age of lipids in dry mass of protoplasm:

   1. 10

   2. 15

   3. 50

   4. 18

5. What is true about cellulose?

   1. It is sweet in taste

   2. It is digestible by human digestive system

   3. It provides structural support in plants

   4. It is soluble in water

6. Amino acid present in insuline:

   1. 574

   2. 95

   3. 51

   4. 47

7. Where are proteins found in the cell?

   1.  Only in the cell membrane

   2. In the cytoplasm

   3.  In the cell membrane 

   4.  both B & C

8. Meaning of saccharides is:

   1. Sugar

   2. Fruits

   3. Salts

   4. Minerals

9. During translation, sequence of amino acids in the protein decided on the basis of sequence of nucleotides in:

   1. tRNA

   2. rRN

   3. mRNA

   4. DNA

10. The type of RNA that brings amino acids to the ribosome is:

    1. snRNA

    2. tRNA

    3. rRNA

    4. mRNA