Gene Expression Mechanisms Quiz

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What is the fundamental dogma that explains the link between DNA and proteins?

DNA is replicated to produce RNA, which is then translated to produce Proteins

DNA is transcribed to produce RNA, which is then translated to produce Proteins (correct)

Proteins are transcribed to produce DNA, which is then translated to produce RNA

RNA is transcribed to produce DNA, which is then translated to produce Proteins

What is the main difference between a gene and a genome?

A gene consists of non-encoding DNA sequences only, while a genome consists of gene encoding DNA sequences.

A gene consists of DNA sequences only, while a genome consists of gene encoding DNA sequences & non-encoding DNA sequences. (correct)

A gene consists of proteins only, while a genome consists of gene encoding DNA sequences.

A gene consists of RNA sequences only, while a genome consists of protein encoding DNA sequences.

Which component makes up the sugar-phosphate backbone in the structure of DNA?

Base + Hydrogen Bond

Sugar + Phosphate + Base (correct)

Phosphate + Base

Sugar + Base

What is the process by which information from a gene is used in the synthesis of a functional gene product?

Gene Expression Signup and view all the answers

What is the role of release factors during translation termination?

Recognizing stop codons Signup and view all the answers

What occurs once the peptide bond is formed?

The empty tRNA drifts out via the E site Signup and view all the answers

What is the function of polyribosomes in protein synthesis?

Linking ribosomes together for protein synthesis Signup and view all the answers

During transcription, which phase involves RNA polymerase adding one RNA nucleotide at a time to a growing RNA molecule?

Elongation Signup and view all the answers

What is the function of the terminator sequence in transcription?

Signals where the RNA polymerase should stop transcribing Signup and view all the answers

What is the purpose of splicing in RNA processing?

Removing introns and joining exons Signup and view all the answers

Which structure is responsible for carrying the next amino acid to be added to a growing polypeptide chain during translation?

tRNA Signup and view all the answers

In translation, what is the role of the A site on the ribosome?

Hold tRNA carrying next amino acid Signup and view all the answers

Which component of translational machinery is responsible for adding specific amino acids to tRNA molecules?

Aminoacyl-tRNA synthetases Signup and view all the answers

In which direction does RNA polymerase move along the DNA template strand during transcription elongation?

3' to 5' Signup and view all the answers

True or False: The non-template DNA strand has the same sequence as the mRNA, except for the T-U switch.

False Signup and view all the answers

Gene Expression Mechanisms Quiz

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