Question

Question 1 

Which of the following is NOT true about genetic information & gene expression? 

• Genetic information must be copied to RNA 

• RNA is translated at the ribosomes 

• DNA is translated at the ribosomes 

• DNA stores information 

Question 2 

Which statement is INCORRECT about gene expression? 

• Info must be copied to RNA 

• DNA stores information

• RNA is translated at the ribosomes 

• DNA is translated at the ribosomes 

Question 3 

Codons are 

• 3 nucleotide sequences that mostly specify an amino acid 

• 5 nucleotide sequences that mostly specify an amino acid 

• amino acids in a protein 

• single nucleotides that correspond to a single amino acid

Answer 1

Question 1

Answer – DNA is translated at the ribosomes

Explanation - In general and as universal, DNA serves as a bio-molecule that stores information and to transverse the information into phenotype, first DNA is copied or transcribed to an intermediate bio-molecule known as RNA via transcription process and then RNA gets translated to proteins via translational machinery also known as ribosomes.

Thus, among the given options, Genetic information must be copied to RNA, RNA is translated at the ribosomes and DNA stores information are correct.

Therefore, the option which is NOT true about genetic information and gene expression is DNA is translated at ribosomes as RNA is the one which always gets translated at the ribosomes.

Question 2

Answer – DNA is translated at the ribosomes

Explanation – Gene expression is the process involving the use of any-phenotype information store in DNA in terms of gene getting converted to an fuctional protein. This process involves the conversion of DNA to intermediate biomolecule RNA which gets translated to protein using ribosomes as translational machinery.

Thus, among the given options, info must be copied to RNA, RNA is translated at the ribosomes and DNA stores information are correct.

Therefore, the option which is INCORRECT about gene expression is DNA is translated at ribosomes as RNA is the one which always gets translated at the ribosomes.

Question 3

Answer – 3 nucleotide sequences that (mostly) specify an amino acid

Explanation – Codons are nucleotide sequence that specify an amino acid. Codons are the basis of making storing of information in DNA and accurately decoding the information in terms of proteins possible. Each codon consists 3 nucleotide sequence.

Thus, options consisting codon consisting 5 nucleotide sequence and single nucleotide sequence are wrong. Also, codons are nucleotide sequence not amino acids in a protein.

Therefore, the correct option is codons are 3 nucleotide sequences that (mostly) specify an amino acid.