One Gene One Protein

Beadle and Tatum used ...................... in their experiment, looking for evidence that a gene code for an enzyme

• Bacteria

• animal cell

• plant cell

• bread mold

Which step of the Beadle and Tatum Neurospora mold experiment is shown in the diagram?

• The mutant strains are tested to see if the damaged genes can be fixed by one amino acid or enzyme.

• The mutant strains are tested for growth in a medium that has nothing but one amino acid or vitamin.

• The mutant strains are tested for growth in a medium supplemented with one amino acid or vitamin.

• The mutant strains are tested for growth on minimal medium lacking in one amino acid or enzyme.

Tags

NGSS.HS-LS3-2

which of the following enzyme functions was the focus of the Beadle and Tatum experiments?

• Enzymes break down toxins (harmful substances) so that cells can get rid of them.

• Enzymes break down complex sugars so that cells can use them for energy.

• Enzymes convert simple substances into essential amino acids and vitamins.

• Enzymes initiate the transcription of mRNA from DNA by binding to a promoter.

Beadle and Tatum Knew that if they exposed Neurospora spores to ................ , they could cause ................... in genes.

• X - rays , Sunlight

• Replication, enzymes

• replication, translation

• X - rays, mutation

Tags

NGSS.HS-LS3-2

The first step in Beadle and Tatums experiment was to grow spores of Neurospora, a bread mold, on a .................. with no amino acids.

• complete medium

• minimal medium

• amino acids

What hypothesis did George Beadle and Edward Tatum present?

• Each gene codes for a single enzyme.

• Each gene codes for multiple enzymes.

• Radiation damages genes responsible for enzymes.

• Mutations in genes cause metabolic disorders.

Tags

NGSS.HS-LS1-1