181. Plasma membrane is made of

A proteins and carbohydrates
B proteins and lipids
C proteins, lipids and carbohydrates
D proteins, some nucleic acid and lipids
Answer :   proteins, lipids and carbohydrates
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182. In which tublin protein is not present

A Plasma membrane
B Cilia
C Flagella
D Microtubules
Answer :   Plasma membrane
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183. Which of the following N2 bases are pyrimidines

A T & C
B T & A
C A & C
D G & T
Answer :   T & C
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184. What would happen if in a gene encoding a polypeptide of 50 amino acids, 25th codon (UAU) is mutated to UA

A A polypeptide of 24 amino acids will be formed
B Two polypeptides of 24 and 25 amino acids will be formed
C A polypeptide of 49 amino acids will be formed
D A polypeptide to 25 amino acids will be formed
Answer :   A polypeptide of 24 amino acids will be formed
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185. Protein in silk thread is

A Fibroin
B Keratin
C Albumin
D Globulin
Answer :   Fibroin
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186. Ground substance present inside the mitochondria is called

A Stroma
B Matrix
C Cell sap
D Cytoplasm
Answer :   Matrix
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187. DNA polymerase enzyme is required for the synthesis of

A DNA from DNA
B DNA from RNA
C A and B both
D DNA from nucleosides
Answer :   A and B both
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188. The part of cell that can be seen with an electron microscope, but can't with a light microscope is/are the

A Nucleus
B Golgi bodies
C Chloroplasts
D Membrane separating the nucleus from the cytoplasm
Answer :   Membrane separating the nucleus from the cytoplasm
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189. Lysosomes are not helpful in

A Osteogenesis
B Cellular digestion
C Metamoprphosis in frog
D Lipogenesis
Answer :   Lipogenesis
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190. Portion of gene which is transcribed but not translated is

A Exon
B Intron
C Cistron
D Codon
Answer :   Intron
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