Unit 4 Practice Test

Which outcome would be most likely if a cell failed to undergo cytoplasmic division during mitosis?

• The cell would produce two daughter cells, each with a normal number of chromosomes
• The cell would produce one daughter cell with twice the normal number of chromosomes
• The cell would not be able to divide
• The cell would die immediately

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If a chemical that disrupts cell division were added to a test tube containing human kidney cells, which process would stop?

• Photosynthesis
• Respiration
• Mitosis
• Meiosis

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What is the outcome of a cell going through one cycle of mitosis?

• Two identical daughter cells are produced
• The cell dies
• The cell becomes a stem cell
• The cell divides into four cells

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Why is the S phase of the cell cycle important?

• It is when the cell divides
• It is when the cell rests
• It is when the cell's DNA is replicated
• It is when the cell produces proteins

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The diagram shows four phases in plant cell mitosis. Which sequence lists the phases in the correct order?

• W, X, Y, Z

• X, Y, W, Z

• Y, X, Z, W

• Z, X, W, Y

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NGSS.HS-LS1-4

What is the primary difference between the typical structure of RNA and DNA?

• RNA is double-stranded and DNA is single-stranded
• RNA contains uracil and DNA contains thymine
• RNA is made of amino acids and DNA is made of nucleotides
• RNA and DNA are exactly the same

A scientist discovers a species of bacteria. The relative percentage of adenine base in its DNA is about 23%. What is the expected percentage for the other three bases?

• 
  thymine: 27%; guanine: 27%; cytosine: 23%

• thymine: 23%; guanine: 23%; cytosine: 23%

• thymine: 23%; guanine: 27%; cytosine: 27%

• thymine: 27%; guanine: 23%; cytosine: 23%

During protein synthesis, where does translation occur?

• In the nucleus
• In the mitochondria
• In the ribosomes
• In the golgi apparatus

During protein synthesis, where does transcription occur?

• In the cytoplasm
• In the mitochondria
• In the nucleus
• In the ribosome

During protein synthesis, what purpose does mRNA serve?

• It carries amino acids to the ribosome
• It provides a single-stranded copy of the cell's DNA for protein synthesis

• It catalyzes the reaction that links amino acids together
• It forms the structure of the ribosome