Questions

1. Which enzyme adds nucleotides to the growing DNA strand?

A.) DNA helicase

B.) DNA polymerase

C.) Topoisomerase

D.) DNA ligase

2. What is the role of the tRNA molecules? Select all that apply.

A.) They provide information about the order the amino acids should be assembled into a protein.

B.) They are part of the structural space where amino acids are assembled into a protein.

C.) They carry specific amino acids to the ribosomes.

D.) They recognize mRNA codons that decide the order of amino acids in the protein.

3. How many unique amino acids are all proteins on earth made of?

A.) 10

B.) 20

C.) 20

D.) 1000

4. What are oncogenes?

A.) tumor-suppressor genes

B.) positive cell cycle regulators

C.) genes that may cause cancer

D.) genes that prevent cell division

5. Which of the following statements about eukaryotic transcription factors is correct?

A.) General transcription factors bind to various regions outside of the core promoter region.

B.) Specific transcription factors bind directly to RNA polymerase.

C.) General transcription factors bind to the core promoter region.

D.) Specific transcription factors bind to the core promoter region.

6. Which of the following is one of the subcategories for the damage or error theory?

A.) Programmed Longevity

B.) Endocrine Theory

C.) Immunological Theory

D.) Rate of Living Theory

7. Which of the following are the two main categories for modern aging theories according to Jin? Select the two (2) correct answers.

A.) Programmed theories

B.)Damage or error theories

C.) Genetic theories

D.) Environmental theories

8. Which of the following has contributed most to research on how various genes contribute to the aging process?

A.) Study of genes that are known to shorten lifespan.

B.) Study of long-lived mutants.

C.) Study of genes that are expressed equally throughout a person`s life.

D.) Study of short-lived mutants.

9. According to Elizabeth Blackburn, which enzyme protects the ends of chromosomes during cell division?

A.) Telomerase

B.)Polymerase

C.) Ligase

D.) Primase

10. Where is the fat that concerns people trying to lose weight mostly stored?

A.) Epidermis

B.)Dermis

C.) Hypodermis

D.) Fascia