Module 9

Question 1

Eukaryotic Cells

Answer 1

• true cells
• membrane bound nucleus + organelles
• animals, plants, fungi

Question 2

Prokaryotic Cells

Answer 2

• simple cells
• no membrane bound nucleus or organelles
• bacteria

Question 3

are viruses acellular or cellular

Answer 3

acellular

Question 4

list the 3 possible shapes of bacteria

Answer 4

1. rod - bacillius
2. spherical coccus
3. spiral - sprilla

Question 5

peptidoglycan

Answer 5

a glycoprotein target for penicillin + antibiotics

Question 6

binary fission

Answer 6

• bacteria reproduction

- reproduce their DNA and split into 2 daughter cells

Question 7

nucleoid

Answer 7

contains the genetic material of bacteria

Question 8

define infectious disease

Answer 8

tissue damage

Question 9

how does infectious disease arise

Answer 9

1. host - innate + adaptive defences, inflammation
2. Viruses - replication within + lysis of host
3. Bacteria - replication

Question 10

naked virus

Answer 10

surrounded by capsid

Question 11

enveloped virus

Answer 11

naked virus + outer membrane of previous host cell

Question 12

list the 4 outcomes of viruses

Answer 12

1. Lytic Infection
2. Chronic
3. Latent
4. transformative

Question 13

Lytic infection

Answer 13

virus reproduces in host cell and kills on release eg inluenza

Question 14

Chronic Infection

Answer 14

virus ‘buds’ off of the host cell and continues to release until host cell dies eg Hep C