DNA and Protein Synthesis — Test Answers

Which is indicated by the letter a?

Which sugar is present in the nucleic acid that is represented in the diagram?

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Many different types of mutations can occur within the body. Sickle cell anemia is a disease that occurs when a mutation in a base pair of the hemoglobin beta gene causes a single replacement of the amino acid glutamic acid by the amino acid valine. As a result of this mutation, the individual’s blood cells take on a sickle shape under certain conditions and form clusters that can block blood vessels and cause organ damage. Which type of mutation causes sickle cell anemia?

Lactase is a protein in the digestive tract that helps break down certain sugars found in milk. What is the main function of lactase?

Which represents a strand of RNA bases?

What can a person do to limit exposure to X-rays?

All of these would be visible on a karyotype except

What was Friedrich Miescher's contribution to the discovery of the genetic code?

Which process is part of translation but not transcription?

Which of these is the primary site of protein synthesis?

Which of these correctly organizes these genetic terms in order from smallest to largest?

Which is a purpose for which a pedigree chart might be prepared?

A protein called GEF-H 1 is known to control immune responses to certain viruses such as influenza A. GEF-H 1 is best classified as which kind of protein?

Which best describes a centromere?

How many genes make up the human genome?

Many different types of mutations can occur within the body. Cystic fibrosis is a genetic disorder that is caused by different mutations within the CFTR gene. One mutation in the CFTR gene that leads to cystic fibrosis causes translation to end earlier in the gene sequence. Which type of mutation causes this translation error that leads to cystic fibrosis?

Maria is concerned because she has been exposed to a small amount of radiation during an X-ray. What is her doctor most likely to tell her?

If a stop codon is like a red traffic light, which is most like a green traffic light during transcription?

Which is a frameshift mutation?