BIOL 251: LAB 1 - SAFETY, UBIQUITY, MICROSCOPY

These flashcards cover key vocabulary terms and concepts from the BIOL 251 lab lecture on safety, ubiquity of microbes, and microscopy.

BSL 1 and 2

Biosafety Levels indicating the safety precautions necessary for laboratories handling certain microorganisms.

PPE (Personal Protective Equipment)

Gear like lab coats, goggles, gloves, and masks that ensure safety in the laboratory.

•Over 1.7 million

nosocomial infections occur every year.

Roughly 99,000 deaths

result from nosocomial infections.

Nosocomial infections

Infections acquired in a hospital setting, often due to the spread of pathogens.

Transient Flora

Temporary microorganisms on the skin that can cause diseases and are easily removable. (temporary)

Resident Flora

Microorganisms that permanently inhabit the skin and protect against pathogens. (always present)

Glo-Germ

A lotion used to test handwashing effectiveness by showing fluorescence under UV light.

Culture Medium

Nutrient sources allowing the growth of microorganisms in lab settings.

Selective media

Culturing media that inhibit some microbes while promoting others.

Total Magnification

The product of the ocular lens magnification and the objective lens magnification.

Resolution

The ability to distinguish two separate objects.

Working Distance

The space between the objective lens and the slide, which decreases with increased magnification.

Parfocal

A feature that keeps the image in focus when switching between different objective lenses.

Prokaryotic Cells

Cells that are small, unicellular, and lack a true nucleus, examples include bacteria.

Eukaryotic Cells

Cells that are larger, may be unicellular or multicellular, and contain a true nucleus.

Kingdom Fungi

Non-photosynthesizing decomposers, including molds and yeasts.

Ubiquity of Microbes

The concept that microorganisms are found everywhere in the environment.