PCC BI 234 BRIGGS EXAM 1 QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS VERIFIED GRADED A++
4 views 0 purchase
Course
BI 234
Institution
BI 234
PCC BI 234 BRIGGS EXAM 1 QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS VERIFIED GRADED A++
Contributions of van Leuwenhoek
First to observe bacteria using homemade microscopes
Contributions of Pasteur
Yeasts are responsible for alcohol fermentation. Developed pasteurization
Contributions of ...
Cell wall of chitin. Obtain food from organisms. Some cause disease.
Protozoa
Eukaryote. Unicellular. Mostly Asexual Reproduction. No Cell Wall. Motile via
pseudopods, cilia, flagella. Some cause disease.
Algae
, Eukaryote. Uni/Multi Cellular. Sexual/Asexual Reproduction. Cell wall of cellulose, or
silica. Photosynthetic. Some cause disease.
Viruses
Acellular (Non-Living). Nucleic acid enclosed within a protein coat. Multiply only within a
host cell.
Animals
Eukaryote. Multicellular. No cell walls. Use organic chemicals for energy (feed on
others). Some cause disease (parasitic worms).
Overview of Prokaryote
Do not have membrane surrounding their DNA (lack a nucleus). Lack membrane bound
structures. Small. Simple structure. Composed of bacteria, and archaea.
Overview of Eukaryote
Has a nucleus, and membrane bound organelles. Large. More complex structure.
Composed of algae, protozoa, fungi, animals, plants.
Prokaryotic Cells: Glycocalyx
Gelatinous, sticky substance outside of cell wall. Composed of polysaccharides.
Protects cells from drying out (dessication). Two types: Capsule, Slime Layers.
Capsule
Neatly organized. Firmly attached to cell surface. Prevents phagocytosis (prevents
recognition by host).
Slime Layer
Less organized. Loosely attached to cell surface. Sticky layer allows other prokaryotes
to attach to surfaces, as biofilms.
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 NurseAdvocate. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $9.99. You're not tied to anything after your purchase.
