MLT 106 EXAM 1 2025 QUESTIONS AND ANSWERS

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MLT 106 EXAM 1 2025 QUESTIONS AND ANSWERS

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2024/2025

Institution MLT 106

Course MLT 106

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Most bacteria are not pathenogenic; indeed that are - ANS Beneficial Acid fast stain if red - ANS acid fast Acid fast stain if green - ANS NOT acid fast Spore stain if red - ANS endospore Spore stain if green - ANS veg (vegetables are green) Plasmids allow "swapping' of genes and this can result in - ANS antibiotic resistance groups of various bacteria come to live as a colony; difficult to treat. - ANS biofilms Waterpipes, contact lens cases, catheters, VAP ventilators - ANS where biofilms form /Streptococcus pneumonia/ /Haemphilus influenza/ /Klebsiella pneumonia/ MLT 106 EXAM 1 2025 QUESTIONS AND ANSWERS COPYRIGHT © 2025 THESTAR ALL RIGHTS RESERVED 2 have what feature that make them more virulent? - ANS Capsule Pseudomonas aerugenosa, is a deadly, ubiquitus bacteria lives in soil. It has a thinner, less tightly bound glycocalyx called a - ANS slime layer isotonic solution - ANS same number solutes in and out. don't move. hypotonic - ANS Fluid moves into cell. can withstand 300x difference (bec of cell wall) hypertonic solution - ANS dessication occurs, cell membrane can pull away from cell wall Staph. aureas is normal epidermal flora, but can cause food poisoning. How? - ANS makes enterotoxins Exotoxins - ANS made by bacteria, eg. Botulism Endotoxins - ANS part of cell wall Cidal - ANS outside temperature range; denatures proteins Enzymes=proteins=amino acids. How can we denature and thus control bacteria - ANS disrupt environment chemicals, temperature, pH Prokaryotes lack - ANS true nucleus Nature of microorganisms - ANS reproduce rapidly can be grown quickly in larg p

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MLT 106 EXAM 1 2025 QUESTIONS AND
ANSWERS

Most bacteria are not pathenogenic; indeed that are - ANS Beneficial

Acid fast stain if red - ANS acid fast

Acid fast stain if green - ANS NOT acid fast

Spore stain if red - ANS endospore

Spore stain if green - ANS veg (vegetables are green)

Plasmids allow "swapping' of genes and this can result in - ANS antibiotic resistance

groups of various bacteria come to live as a colony; difficult to treat. - ANS biofilms

Waterpipes, contact lens cases, catheters, VAP ventilators - ANS where biofilms form

/Streptococcus pneumonia/
/Haemphilus influenza/
/Klebsiella pneumonia/

COPYRIGHT © 2025 THESTAR ALL RIGHTS RESERVED 1

, have what feature that make them more virulent? - ANS Capsule

Pseudomonas aerugenosa, is a deadly, ubiquitus bacteria lives in soil. It has a thinner, less
tightly bound glycocalyx called a - ANS slime layer

isotonic solution - ANS same number solutes in and out. don't move.

hypotonic - ANS Fluid moves into cell. can withstand 300x difference (bec of cell wall)

hypertonic solution - ANS dessication occurs, cell membrane can pull away from cell wall

Staph. aureas is normal epidermal flora, but can cause food poisoning. How? - ANS makes
enterotoxins

Exotoxins - ANS made by bacteria, eg. Botulism

Endotoxins - ANS part of cell wall

Cidal - ANS outside temperature range; denatures proteins

Enzymes=>proteins=>amino acids. How can we denature and thus control bacteria -
ANS disrupt environment chemicals, temperature, pH

Prokaryotes lack - ANS true nucleus

Nature of microorganisms - ANS reproduce rapidly
can be grown quickly in larg populations in lab

COPYRIGHT © 2025 THESTAR ALL RIGHTS RESERVED 2

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