Genes and Heredity Unit Test

The molecule that carries genetic information for all living things is called

• RNA

• Protein

• DNA

• Lipid

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DNA is shaped like a

• a. Double helix

• b. Single strand

• c. Spiral coil

• d. Flat ribbon

The sides of the DNA molecule are made of

• Nitrogen bases

• Sugars and phosphates

• Proteins

• Enzymes

The rungs of the DNA ladder are made of

• Amino acids

• Sugars

• Nitrogen base pairs

• Lipids

Which base always pairs with adenine in DNA?

• Cytosine

• Guanine

• Thymine

Segments of DNA that code for specific traits are called

• Chromosomes

• Genes

• Codons

• Nucleotides

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The process of making identical copies of DNA before cell division is called

• Translation

• Transcription

• Replication

• Mutation

Which of the following correctly describes the relationship between DNA, genes, and chromosomes?

• Genes make up DNA, and DNA makes up chromosomes

• DNA makes up genes, and genes make up chromosomes

• Chromosomes make up genes, and genes make up DNA

• They are all the same thing

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The order of bases in DNA determines how _____ are made.

• Cells

• Sugars

• Proteins

• Chromosomes

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DNA replication results in two molecules that are

• Completely different

• Half old and half new

• Single-stranded

• Missing bases