Questions for Review-1

1. Why is it necessary that the bonds between the complementary nitrogen base pairs of DNA are weak hydrogen bonds?

• to help DNA coils thicken into chromosomes

• to help DNA form a double helix

• to eliminate mutations in DNA

• to more easily separate DNA strands during replication

2. The graphs shown show the effects of temperature and pH on a certain enzyme found in the human digestive system. What can you conclude from the graph?

• The enzyme is most effective at 60 degrees Celsius and a pH of 11.

• The enzyme is most effective at 40 degrees Celsius and a pH of 4.

• The enzyme is most effective at 40 degrees Celsius and a pH of 8.

• The enzyme is most effective at 30 degrees Celsius and a pH of 5.

3. Which of the following statements describes enzymes correctly? Choose two.

• Enzymes can only be used once in a reaction.

• Enzymes are substrate specific.

• Enzymes are biological catalysts

• Enzymes increase the energy required to begin a reaction.

4. An example of a mutation where a piece of chromosome breaks off and attaches to another chromosome is called ________.

• trisomy

• translocation

• inversion

• deletion

Tags

NGSS.HS-LS3-2

5. Notice the 23rd chromosome. What do you think is the genetic condition experienced by this individual?

• Klinefelter's Syndrome

• Down Syndrome

• Turner Syndrome

• Huntington's Disease

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

6. A chromosome is found to be shorter than its homologous match. Which type of mutation would this most likely be?

• insertion

• deletion

• translocation

• inversion

Tags

NGSS.HS-LS3-2

7. What genetic condition is shown in this karyotype?

• Klinefelter's Syndrome

• Turner's syndrome

• Down Syndrome

• Huntington's disease

Tags

NGSS.HS-LS3-1

What process occurs during meiosis that can result in chromosomal disorders?

• nondisjunction

• anaphase I

• prophase II

• telophase

Tags

NGSS.HS-LS3-2

Identify the mutation in the picture.

• inversion

• deletion

• translocation

• duplication

Tags

NGSS.HS-LS3-2

Identify the mutation in the picture.

• deletion

• translocation

• inversion

• duplication

Tags

NGSS.HS-LS3-2