Lesson 4.4: Viruses Protein coat, morphology, types

Question 1

What is a virus?

Answer 1

small, infectious agent made of nucleic acid and protein

Question 2

Cell size comparison, virus, bacterial cell, and eukaryotic cell

Answer 2

V: 0.01-0.1 um
B. 1-5 um
E: 10-100 um

Question 3

example of polyhedron capsid

Answer 3

20-sided icosahedron

Question 4

______ protien capsid is surrounded by ____-containing ______
which is derived form the host’s _____

Answer 4

HIV
lipid
outer envelope
cell membrane

Question 5

____ are viruses that infects bacterial cell
they also fight __________
mechanism

Answer 5

Bacteriophage
resistant pathogenic bacteria
kill selective bacteria
They are the most common biological entities

Question 6

______ is the types of cell or organisms a virus can infect

Answer 6

Host range

Question 7

Tobacco Mosaic virus (TMV)
morphology
size
host

Answer 7

filamentous, ssRNA
75 nm
tobacco

Question 8

T-Even Bacteriophage
morphology
host
size
mechanism

Answer 8

spaceship contains ds DNA
E. coli
50 nm
proteins surrounding the virus shape to bind with the proteins on host cell

Question 9

Parts of a bacteriophage

Answer 9

-head
-collar
-tail
-end plate

Question 10

Rotavirus
morphology
size

Answer 10

Spherical;double-strandedRNA
● 75nm

Question 11

Herpesvirus
morphology
size

Answer 11

Icosahedral,enveloped;
double-strandedDNA
● 200nm

Question 12

Poxvirus
morphology size

Answer 12

Oval,enveloped;double-strandedDNA
● 150nm

Question 13

Example of reservoir hosts and how it affects the host

Answer 13

Mosquito- Zika virus infects human and causes birth defects