Class XII · Biology practice

Molecular Basis of Inheritance MCQs

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668 questions in this collection · Page 43 of 67

Question 421 of 668

📘 CLASS XII

Molecular Basis Of Inheritance

The codon is read in mRNA in a _______ fashion.

It is read contiguously without punctuation.

Question 422 of 668

📘 CLASS XII

Molecular Basis Of Inheritance

The genetic code is nearly _______

It is nearly universal across organisms.

Question 423 of 668

📘 CLASS XII

Molecular Basis Of Inheritance

Mutations that involve addition or deletion of bases are called _______ mutations.

Indels cause frameshifts.

Question 424 of 668

📘 CLASS XII

Molecular Basis Of Inheritance

tRNA acts as an _______ molecule.

tRNA adapts the code to amino acids.

Question 425 of 668

📘 CLASS XII

Molecular Basis Of Inheritance

tRNA has an _______ loop that reads the code.

The anticodon reads the mRNA.

Question 426 of 668

📘 CLASS XII

Molecular Basis Of Inheritance

Amino acids bind to the _______ end of tRNA.

Amino acids bind to the 3' end.

Question 427 of 668

📘 CLASS XII

Molecular Basis Of Inheritance

The enzyme aminoacyl-tRNA synthetase catalyzes _______ of tRNA.

It charges the tRNA with amino acid.

Question 428 of 668

📘 CLASS XII

Molecular Basis Of Inheritance

Translation occurs in the _______

Ribosomes translate in the cytoplasm.

Question 429 of 668

📘 CLASS XII

Molecular Basis Of Inheritance

Ribosomes are composed of _______ and proteins.

Ribosomes are rRNA + proteins.

Question 430 of 668

📘 CLASS XII

Molecular Basis Of Inheritance

The 23S rRNA in bacteria acts as a _______

It acts as an enzyme (ribozyme) for peptide bond formation.

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