BIOS 242 EXAM 1 WITH ACCURATE ANSWERS FOR GUARANTEED PASS

BIOS 242 EXAM 1 20254/2025 WITH ACCURATE ANSWERS FOR GUARANTEED
PASS


What is the first step in viral replication?

Penetration/adhesion (attaches to membrane using spikes)




What is the second step in viral replication?

Uncoating




What is the third step in viral replication?

Replication




What is the fourth step in viral replication?

Assembly




What is the fifth step in viral replication?

Maturation




What is the sixth step in viral replication?

Release (release the protein that has the viral components so it infects more cells)




What are the four types of archaea?

Methanogens, hyperthermophile, psychrophile, halophiles

,What are characteristics of a methanogen?

CO2 with methane




Where are methanogens found?

Swamps, landfill




What are characteristics of a hyperthermophile?

Loves high temperature




Where are hyperthermophiles found?

Volcano




What are characteristics of a psychrophile?

Survives in cold temperatures




Where are psychrophiles found?

Ice caps




What are characteristics of a halophile?

Survives in salt environments

, Where are halophiles found?

Salt lake




This type of archaea live in swamps and marshes and produce methane, what is it?

Methanogen




This type of archaea requires hot, acidic environments

Hyperthermophile




During a gram stain, the presence of ____ gives a purple stain

Peptidoglycan




Why is gram negative bacteria pink?

Outer membrane is weakened




What do gram negative bacteria have?

Poring proteins, lipopolysaccharide-phospholipid outer membrane surrounding a thin peptidoglycan
layer.




What do gram positive bacteria have?

Lipoteichoic acid with thick peptidoglycan cell wall