LS1.3 EOC Pre-Assessment

Front

What are the four nitrogen bases found in DNA?

Back

Adenine, thymine, cytosine, and guanine.

Front

What is the primary function of DNA in living organisms?

Back

DNA serves as the blueprint for traits of all living things.

Front

Which nitrogen base does guanine bond with?

Back

Cytosine.

Front

Which nitrogen base does adenine bond with?

Back

Thymine.

Front

What determines the genetic code in a DNA molecule?

Back

The order (sequence) of the nitrogen bases.

Front

What is the structure of DNA?

Back

DNA is a double helix composed of two strands of nucleotides.

Front

What are nucleotides made of?

Back

A nucleotide consists of a sugar, a phosphate group, and a nitrogen base.

Front

What role do hydrogen bonds play in DNA structure?

Back

Hydrogen bonds hold the two strands of DNA together by connecting complementary nitrogen bases.

Front

What is the significance of the sequence of nitrogen bases in DNA?

Back

The sequence of nitrogen bases encodes the information needed to build proteins.

Front

How do mutations affect DNA?

Back

Mutations are changes in the sequence of nitrogen bases that can alter the function of genes.