Packet #16

Question 1

Which bases derive from purine?

Answer 1

adenine & guanine

Question 2

Which bases derive from pyrimidine

Answer 2

cytosine and thymine

Question 3

What base found in DNa but not in RNA?

Answer 3

thymine

Question 4

What base in RNA but not in DNA?

Answer 4

uracil (replaces thymine)

Question 5

Which bases pair together?

Answer 5

A-T and C-G

Question 6

What are 3 components of a nucleotide?

Answer 6

sugar, base and phosphate group

Question 7

What protein involved in sickle cell?

Answer 7

hemoglobin

Question 8

aptamer

Answer 8

An aptamer is an oligomeric (short) strand of synthetic DNA that is used as a drug

Question 9

Gene therapy

Answer 9

Gene therapy is the treatment of a genetic disorder by replacing the unhealthy gene in a person’s chromosomes with a healthy variant of the same gene. Viruses are often used as vectors for the healthy genes used in gene therapy.

Question 10

DNA replication

Answer 10

• DNA helicase: unwinds the two chains
• DNA polymerase: builds new complimentary chains for each of the 2 separate DNA chains. One DNA chain serves as a template for building its own complimentary chain

Question 11

DNA

Answer 11

• deoxyribonucleic acid
• anti-parallel chains
• double helix
• Real human DNA is 2 pllymers made of 2.9 billion base pairs.

Question 12

RNA transcription

Answer 12

• A portion (gene) of the DNA unwinds (The DNA segment (gene) is a template for building the RNA chain in step #2
• The body builds an RNA chain that is complimentary to the gene (complimentary to the segment of DNA that is unwound)
• The RNA serves as a template for building a protein