Front

What is asbestos and its link to cancer?

Back

Asbestos is a building material that can cause mutations in the p53 gene, which controls tumor suppression, leading to certain types of cancers.

Front

What type of cells do mutations from asbestos exposure occur in?

Back

Mutations from asbestos exposure occur in somatic cells, which are not passed on to offspring.

Front

What is a codon?

Back

A codon is a sequence of three nucleotides in mRNA that corresponds to a specific amino acid.

Front

What is the significance of the mRNA sequence CUU?

Back

The mRNA sequence CUU codes for the amino acid leucine.

Front

What happens if a mutation changes CUU to CAU?

Back

The mutation changes the amino acid sequence from leucine to histidine, resulting in a different protein.

Front

What is the role of Strand A in DNA?

Back

Strand A acts as a template for the synthesis of messenger RNA (mRNA) during transcription.

Front

What is the function of mRNA?

Back

mRNA carries the genetic code from DNA in the nucleus to the ribosome for protein synthesis.

Front

What are nitrogenous bases?

Back

Nitrogenous bases are the building blocks of DNA and RNA, consisting of adenine, thymine, cytosine, and guanine.

Front

How do nitrogenous bases determine protein synthesis?

Back

The order of nitrogenous bases in DNA determines the sequence of amino acids in proteins.

Front

What is the structure of DNA?

Back

DNA is a double helix composed of two strands of nucleotides, with nitrogenous bases paired in the center.