Gene Expression

Front

What is the main difference between RNA and DNA?

Back

RNA contains uracil and ribose, while DNA contains thymine and deoxyribose.

Front

How is the DNA sequence GCTATA transcribed to mRNA?

Back

The mRNA sequence is CGAUAU.

Front

What amino acid corresponds to the codon CAC?

Back

The amino acid is HIS.

Front

Where does the process of transcription occur in a cell?

Back

Transcription takes place in the nucleus.

Front

What type of mutation is represented by the change from TTACGCAAG to TTCGCAAG?

Back

This is an example of a deletion mutation.

Front

What is the role of mRNA in gene expression?

Back

mRNA carries the genetic information from DNA to the ribosome for protein synthesis.

Front

What are the three main types of RNA involved in protein synthesis?

Back

The three main types are mRNA (messenger RNA), tRNA (transfer RNA), and rRNA (ribosomal RNA).

Front

What is a codon?

Back

A codon is a sequence of three nucleotides in mRNA that specifies a particular amino acid.

Front

What is the function of tRNA in translation?

Back

tRNA transports specific amino acids to the ribosome, matching them to the mRNA codons.

Front

What is the significance of the start codon AUG?

Back

AUG is the start codon that signals the beginning of protein synthesis and codes for the amino acid methionine.