Genetics, Viruses, Taxonomy, and Plants

Which sequence of DNA bases would pair with this partial strand
ATG TGA CAG

• ATG TGA CAG
• TAC ACT GTC
• GTA AGT GAC
• CAT TCA CTG

DNA codes for...

• cholesterol
• proteins
• fatty acids
• a sandwich

What determines the code, or information, of a DNA molecule?

• the shape (structure) of the nitrogen bases
• the order (sequence) of the nitrogen bases
• the color of the nitrogen bases
• the frequency (number) of nitrogen bases

A change in the genetic code = ____

• trait
• genotype
• phenotype
• mutation

What organisms have DNA?

• Virus
• Plant
• Bacteria
• All living things

A segment of a DNA strand is shown.

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Differences in traits such as hair texture are determined by differences in -

• the location of sugar groups in DNA

• the sequence of nucleotides in DNA

• the number of nitrogenous bases in DNA

• the molecules attached to the phosphate in DNA

The sequences of nitrogenous bases in DNA varies widely. The sequence of bases in DNA is most important for which of the following?

• Providing the instructions for the traits of an organism

• Preventing mutations from occurring during DNA replication

• Allowing the DNA to have the shape necessary for replication

• Helping form the sugar-phosphate backbone of DNA molecules

Part of an important cellular process involving a DNA strand is modeled below. What is the purpose of this cellular process?

• Preserving genetic information for future generations

• Deleting the information in the sequence produced from the DNA template

• Transcribing information in the DNA sequence for use by the cell

• Producing more nucleotides for the DNA sequence

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