Biology Unit 6 DNA

Front

What are the three components of an RNA nucleotide?

Back

1. Ribose sugar 2. Phosphate group 3. Nitrogenous base (adenine, uracil, cytosine, guanine)

Front

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

Back

Uracil

Front

What are proteins made of?

Back

Proteins are made of long chains of amino acids.

Front

What is a mutation?

Back

A mutation is a change in the base sequence of an organism's DNA.

Front

What is the role of ribosomes in protein synthesis?

Back

Ribosomes are the organelles that translate mRNA into proteins.

Front

What is the difference between DNA and RNA?

Back

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

Front

What is substitution in DNA?

Back

Substitution is a type of mutation where one base is replaced by another in the DNA sequence.

Front

What is the function of the nucleus in a cell?

Back

The nucleus houses the cell's DNA and is the site of transcription.

Front

What is the process of transcription?

Back

Transcription is the process of copying a segment of DNA into mRNA.

Front

What is the significance of the genetic code?

Back

The genetic code determines how sequences of nucleotides are translated into amino acids.