BIOL 2420 Lab Exam 1 Questions and
Answers | 100% Pass
Proper Hand washing protocols - Answer️️ -1. remove any large jewelry
2. wet you hands with clean water and soap
3. rub hands together thoroughly
4. scrub for about 20 seconds
5. rinse your hands
6. dry with paper towel
spill protoc...
,BIOL 2420: Exam #1 Practice Questions
and Answers | 100% Pass
What are the 6 categories of microorganisms? - Answer✔️✔️-Bacteria, archaea, fungi,
protozoa, algae, and helminths.
What are the differences between prokaryotes and eukaryotes? - Answer✔️✔️-
Prokaryotes: Unicellular, lack a nucleus and cytoplasic organelles, single circular DNA.
Eukaryotes: Have a nucleus and cytoplamic organelles, multiple linear DNA molecule.
What are the two types of prokaryotes? - Answer✔️✔️-Bacteria and archaea.
What is the difference between bacteria and archaea? - Answer✔️✔️-Cell walls, however
both lack nuclei.
Bacteria: Cell walls are made of a polysaccharide called peptidoglycan.
Archaea: Cell walls lack peptidoglycan and are made of other polymers.
What are the major characteristics of fungi? - Answer✔️✔️-Eukaryotic microorganism, so
the cells contain a nucleus made of genetic material surrounded by a membrane.
Obtain their food from other organisms. Cell walls are made of chitin. Relatviely static in
relation to movement factors. Produce both sexually and asexually. Includes molds and
yeasts.
What are the two types of fungi and what is different between them? - Answer✔️✔️-Molds
and yeasts.
Page | 1
, Molds: Typically unicelluar, grow as long filaments and intertwine to make up the body
of a mold, reproduce both sexually and asexually.
Yeasts: Unicellular and oval or round, reproduce asexually by budding, which is when a
daughter cell grows off of the mother cell.
What are the major characteristics of protozoa? - Answer✔️✔️-Single-celled eukaryotes,
lack a cell wall. Animal-like protists because of their nutritional needs and cell structure.
Live freely in water or sometimes in animal hosts where they may cause disease. Most
are capable of locomotion by pseudopodia, cilia, and flagella.
What are the three types of locomotion? - Answer✔️✔️-Pseudopodia, cilia, flagella.
Pseudopodia: Extensions of a cell that flow in the direction of travel.
Cilia: Numerous short protrusions of a cell that beat rhythmically to move the protozoan
in its environment.
Flagella: Extension of the cell but are fewer and longer than cilia.
What are the key characteristics of algae? - Answer✔️✔️-Unicellular or multicellular
photosynthetic protists, which means they make their own food from CO2 and H2O
using energy from the sunlight. Categorized based on pigmentation, stoage, products,
and composition of their cell walls.
What are helminths and what are their characteristics? - Answer✔️✔️-Microogranisms
that are parasitic worms. Multicellular, not a true microbe because most adult worms are
not microscopic. Considered part of microbiology because most identification/diagnosis
is through a microscope. Includes cestodes, nematodes, and trematodes.
What are viruses and what are their characteristics? - Answer✔️✔️-Only microbe that
remained hidden from early scientists because they microscope was not invented until
Page | 2
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller SophiaBennett. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $10.49. You're not tied to anything after your purchase.
