Final Review Part 2

What amino acid is represented by the codon UUA?

• Phenylalanine
• Tyrosine
• Leucine
• Stop codon

What is the correct amino acid sequence for the mRNA code AUG-CCA-GUA-UGA

• Met-Pro-Ala-Val

• Met-Pro-Val

• Tyr-Gly-His

• Tyr-Gly-Arg-His

Tags

NGSS.HS-LS1-1

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

T2 - The Law of Segregation explains why, if you start with 46 choromosomes, Meiosis produces cells with how many chromosomes?

• 44
• 22
• 46
• 23

T2 - An allele whose trait always shows up in the organism when the allele is present.

• recessive allele
• dominant allele
• hidden allele
• present allele

The ­­­mitotic spindle plays a critical role in which of the following processes?

• triggering the compaction and condensation of chromosomes

• separation of sister chromatids

• splitting of the cell (cytokinesis) following mitosis

• dissolving the nuclear membrane

Scientists isolate cells in various phases of the cell cycle. They isolate a group of cells that have 1 1/2 times more DNA than G1 phase cells. What is the most likely part of the cell cycle from which these cells were isolated?

• in the G2 phase of the cell cycle

• in the M phase of the

• in the S phase of the cell cycle

• in the G1 phase of the cell cycle

What is a GENE?

• segment of DNA that codes for a trait

• spool of proteins

• microtubule organizing center

What is a CHROMOSOME?

• TIGHTLY organized package of DNA molecules

• unraveled DNA + spool of proteins

• Constricted area where identical copies of DNA attach

• Microtubule organizing center

What ARE SISTER CHROMATIDS?

• TIGHTLY organized package of DNA molecules

• unraveled DNA + spool of proteins

• Constricted area where identical copies of DNA attach

• Duplicate copies of DNA