24-25 Fall Semester Exam Honors Bio

Front

What is a DNA mutation?

Back

A DNA mutation is a change in a DNA base sequence, which can occur through insertion, deletion, or substitution of bases.

Front

What is an insertion mutation?

Back

An insertion mutation occurs when one or more extra bases are added into a DNA sequence.

Front

Identify the type of mutation in the sequence: TTA CGC AAG to TTC GC AAG.

Back

This is an example of a deletion mutation.

Front

What is the role of RNA in the cell?

Back

RNA can travel outside of the nucleus and is involved in protein synthesis.

Front

What is the mRNA sequence synthesized from the DNA code GAT TAC?

Back

The mRNA sequence is CUA AUG.

Front

What is prophase?

Back

Prophase is the first stage of cell division where chromosomes become visible and the nuclear envelope begins to break down.

Front

What is metaphase II?

Back

Metaphase II is a stage in meiosis where chromosomes line up at the equatorial plane of the cell.

Front

What is a substitution mutation?

Back

A substitution mutation occurs when one base in the DNA sequence is replaced by a different base.

Front

What is the difference between DNA and RNA?

Back

DNA contains thymine, while RNA contains uracil. RNA is single-stranded, whereas DNA is double-stranded.

Front

What is the function of mRNA?

Back

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