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EXAM 1 - BIOS 242 - CHAMBERLAIN questions and answers update

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EXAM 1 - BIOS 242 - CHAMBERLAIN questions and answers update

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EXAM 1 - BIOS 242 - CHAMBERLAIN questions and
answers 2025-2026 update
DNA is replicated in the ___-ANS >>nucleus

RNA is replicated in the ___-ANS >>cytoplasm

what is the first step in viral replication?-ANS >>penetration/adhesion (attaches to membrane usin
spikes)

what is the second step in viral replication?-ANS >>uncoating

what is the third step in viral replication?-ANS >>replication

what is the fourth step in viral replication?-ANS >>assembly

what is the fifth step in viral replication?-ANS >>maturation

what is the sixth step in viral replication?-ANS >>release (release the protein that has the viral component
so it infects more cells)

what are the four types of archaea?-ANS >>methanogens, hyperthemophile, psychrophile, halophiles

what are characteristics of a methanogen?-ANS >>CO2 with methane

where are methanogens found?-ANS >>swamps, landfill

what are characteristics of a hyperthermophile?-ANS >>loves high temperature

where are hyperthermophiles found?-ANS >>volcano

, what are characteristics of a psychrophile?-ANS >>survives in cold temperatures

where are psychrophiles found?-ANS >>ice caps

what are characteristics of a halophile?-ANS >>survives in salt environments

where are halophiles found?-ANS >>salt lake

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

This type of archaea requires hot, acidic environments-ANS >>hyperthemophile

during a gram stain, the presence of ____ gives a purple stain-ANS >>peptidolgycan

why is gram negative bacteria pink?-ANS >>outer membrane is weakened

what do gram negative bacteria have-ANS >>porin proteins, lipopolysaccharide-phospholipid oute
membrane surrounding a thin peptidoglycan layer.

what do gram positive bacteria have-ANS >>lipoteichoic acid with thick peptidoglycan cell wall

what are the four different types of structures microorganisms can use for movement, adherence, o
mating?-ANS >>fimbriae, pilus, flagella, and cilia

what is fimbriae used for?-ANS >>adhesion

what is pilus used for?-ANS >>mating/conjugation

what is flagella used for?-ANS >>movement

what is cilia used for?-ANS >>movement

what are the benefits about fungi?-ANS >>used for antibiotics, food products such as yeast and alcoho
and decomposition which puts nutrients back into environment

what are the bad things about fungi?-ANS >>contamination

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