Final Exam Biology

Front

What determines differences in traits such as hair texture?

Back

The sequence of nucleotides in DNA.

Front

What are the products in a biochemical reaction?

Back

The substances formed as a result of a chemical reaction.

Front

What amino acid sequence is encoded by the DNA segment 3′ TCATGCATG 5′?

Back

Serine – Threonine – Tyrosine.

Front

What makes up the rungs (steps) of a DNA ladder?

Back

Nitrogen bases.

Front

What do the dotted lines between nitrogenous bases represent?

Back

Hydrogen bonds.

Front

What is the role of an enzyme in a biochemical reaction?

Back

Enzymes act as catalysts to speed up chemical reactions.

Front

What are nitrogenous bases?

Back

The building blocks of DNA and RNA, including adenine (A), thymine (T), cytosine (C), and guanine (G).

Front

What is the structure of DNA?

Back

DNA is a double helix formed by two strands of nucleotides.

Front

What is a codon?

Back

A sequence of three nucleotides in mRNA that codes for a specific amino acid.

Front

What is the function of mRNA?

Back

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