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BIOL 2321 EXAM QUESTIONS AND ANSWERS

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BIOL 2321 EXAM QUESTIONS AND ANSWERS

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BIOL 2321 EXAM QUESTIONS AND
ANSWERS
Lipoprotein - Correct Answers -Attaches the peptidoglycan to the membrane in Gram-
negative bacteria

Gram-positive bacteria - Correct Answers -More likely to tolerate excessive osmotic
pressure conditions

Archeal cell wall - Correct Answers -Pseudomurien

DNA, RNA, protien - Correct Answers -compromises about 25% of the cell weight of a
bacterial cell

Microbes - Correct Answers --Archaea is an extremophile
-Viruses require host to replicate

Types of microbes - Correct Answers -viruses, algae, archaea

Periplasm - Correct Answers -found only in the cell of gram-negative bacteria

Ether-linked lipids - Correct Answers -found in some Archaea

Ion gradients - Correct Answers -storage of potential energy

ori sequence - Correct Answers -Is duplicated very early during the initial stage of DNA
replication

carboxysome - Correct Answers -is Fresh source of water, photosynthetic or lithotrophic

Polysome formation - Correct Answers -can be done in bacteria because they lack a
nuclear membrane

Bacterial movement - Correct Answers -Flagellum, flagella, Pili, Gas Vacuoles,
Magnetosomes

Louis Pasteur - Correct Answers --microbes are responsible for chemical process of
wine (fermentation)
-Microbial growth & metabolism still occur with lack of O2
-Formation of acetic acid due to contaminating microbes

Cell layers of bacteria cells - Correct Answers --lipoprotein
-S Layer
-capsule

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