Bio Unit 8: Q3 Cumulative

Front

What are the chemical components of a DNA nucleotide?

Back

A DNA nucleotide consists of a phosphate group, a sugar (deoxyribose), and a nitrogenous base (adenine, thymine, cytosine, or guanine).

Front

What is translocation in genetics?

Back

Translocation is a type of mutation where a piece of chromosome breaks off and attaches to another chromosome.

Front

What mutation is characterized by a segment of DNA being duplicated?

Back

Duplication is a mutation where a segment of DNA is copied, resulting in multiple copies of that segment.

Front

What is the role of helicase in DNA replication?

Back

Helicase is the enzyme that unwinds the DNA double helix to prepare for replication.

Front

Where is DNA located in eukaryotic cells?

Back

In eukaryotic cells, DNA is found in the nucleus.

Front

What are the four nitrogenous bases found in DNA?

Back

The four nitrogenous bases in DNA are adenine (A), thymine (T), cytosine (C), and guanine (G).

Front

What is the function of DNA polymerase?

Back

DNA polymerase is the enzyme responsible for synthesizing new DNA strands by adding nucleotides to a growing chain during DNA replication.

Front

What is a mutation?

Back

A mutation is a change in the DNA sequence that can lead to changes in the structure and function of proteins.

Front

What is the difference between deletion and inversion mutations?

Back

Deletion is the loss of a segment of DNA, while inversion is a mutation where a segment of DNA is reversed within the chromosome.

Front

What is the significance of the sugar in a DNA nucleotide?

Back

The sugar (deoxyribose) in a DNA nucleotide provides the structural framework for the DNA molecule and connects to the phosphate and nitrogenous base.