Chapter 26

Question 1

Genetic material

Answer 1

Nucleic acids, genetic code for instructions to make more virus particles

Question 2

Capsid

Answer 2

Protein, protective structure that holds genetic code for virus

Question 3

Lipid envelope

Answer 3

Lipid, additional protective layer around some viruses. Not as strong as capsid, can help virus better evade immune system

Question 4

Matrix

Answer 4

Additional structural protein layer between capsid and envelope

Question 5

Membrane glycoprotein

Answer 5

Interacts with feature on cell surface to find host cells. Sometimes facilitates entry

Question 6

Gene therapy

Answer 6

Correction of defective or missing gene product by introducing genetic material in cells

Question 7

Types of gene therapy

Answer 7

Inserting gene to compensate for nonfunctional gene
Swapping nonfunctional gene for normal gene
Repairing nonfunctional gene via selective reverse mutation
Altering regulation of particular gene

Question 8

Why use viruses in gene therapy?

Answer 8

Viruses naturally invade cells to deliver RNA or DNA, can engineer viruses to deliver therapeutic gene of interest

Question 9

Bacteriophage

Answer 9

Bacterial viruses, only infect bacteria. Have characteristic head-tail morphology