BIOD 171 Microbiology Module 1-6 Exams/BIOD 171 Final Exams | BIOD 171 Lab 1-9 Exams Questions With Expert Solutions |Updated & Verified 2024/2025

True or False: A virus is considered a microorganism. - false What is the smallest biological unit of life? - a cell At a generalized level, all cells are comprised of what? - Macromolecules Animalia, Plantae, Fungi and Protista are all classification under what type of organism? - Eukarya All ...

True or false: The high-dry lens will be optimal for observing multicellular fungi or algae. - False True or false: The oil immersion objective is necessary to determine the morphology of prokaryotes. - True What was the largest organism you observed? The smallest? - Fungi/mold; bacteria What t...

Endotoxins are also known as - Lipid A. When would endotoxins be released from a bacterial cell? - When the cell dies Which of the following would be the first sign of an infection that resulted in the release of endotoxin? - Fever Why is a release of endotoxin into the bloodstream potentially d...

In which growth phase is a bacterial culture MOST susceptible to a chemotherapeutic agent? Hint: It will take some critical thinking to answer this one. Think about what is happening in each of the growth phases (bacterial growth curve) and how antibiotics work. stationary phase log phase lag p...

GI bacteria - • the stomach and small intestine contain relatively few bacteria • the large intestine bacterial populations are significant why does the stomach and small intestine contain relatively few bacteria? - • HCl produced by the stomach is unbearable for most bacteria • rapid mo...

antimicrobials - any compounds that kill or inhibit microorganisms antibiotics - antimicrobials, usually of low molecular weight, naturally produced by microorganisms to inhibit or kill other microorganisms ex. penicillin and streptomycin semi-synthetics - antimicrobials that are chemically synt...

Describe the selective and differential properties of mannitol salt agar (MSA) for the isolation and identification of staphylococci. - As a selective medium, MSA has a high concentration of salt (7.5% NaCl), which is inhibitory to most bacteria other than the staphylococci. As a differential med...

bactericidal - ____________ antibiotics kill bacteria. Ex: antiseptics and prescribed antibiotics bacteriostatic - ________________ antibiotics inhibit the growth of bacteria and resulting in a reduced number of bacteria; they work with the immune system to remove the microbes from the body. -e...

How are thermal death point and thermal death time different? - Thermal death point is the lowest temperature that kills all cells in a broth in 10 minutes. Thermal death time is the time required to completely sterilize a particular volume of liquid at a given temperature. Is moist heat more eff...

microorganisms - organisms that are too small to be seen with an unaided eye microbes in our lives - <1% pathogenic decompose organic waste produces by photosynthesis industrial chemicals fermentation outnumber us What are some eukaryotic cells? - fungi, protozoans, algae What are some pr...

True or false: metabolism is a controlled set of biochemical reactions that occur in living organisms in order to maintain life. - True True or false: enzymes slow down chemical reactions to conserve energy - false, they speed up (catalyze) chemical reactions The term for metal ions that assist ...

The concept of treating all samples, whether known or unknown, as potentially hazardous (or pathogenic) materials is known as _____. - universal precautions List at least 3 observations a researchers would be sure to note while assessing an unknown microbial sample. - size and shape, motility, gr...