DNA Replication/Transcription Review

Front

What is the anti-parallel concept in DNA strands?

Back

DNA strands run in opposite directions: one strand runs 5' to 3' and the other runs 3' to 5'.

Front

What are the components of a DNA nucleotide?

Back

A DNA nucleotide consists of a phosphate group, a deoxyribose sugar, and one of four nitrogenous bases: adenine, thymine, cytosine, or guanine.

Front

Which nitrogenous base is found in RNA but not in DNA?

Back

Uracil is found in RNA and replaces thymine found in DNA.

Front

What is the role of RNA polymerase in transcription?

Back

RNA polymerase assembles RNA by reading the DNA template strand.

Front

What do DNA and RNA have in common?

Back

Both DNA and RNA contain phosphate groups.

Front

Where are codons found?

Back

Codons are found in mRNA (messenger RNA).

Front

What is the function of DNA helicase?

Back

DNA helicase unwinds the DNA double helix during replication.

Front

What is the difference between DNA and RNA?

Back

DNA is double-stranded and contains deoxyribose sugar, while RNA is single-stranded and contains ribose sugar.

Front

What are the four nitrogenous bases in DNA?

Back

The four nitrogenous bases in DNA are adenine, thymine, cytosine, and guanine.

Front

What is a mutation?

Back

A mutation is a change in the DNA sequence that can lead to changes in protein function.