Exam (elaborations)
PMB 3212 Exam 1 Questions & answers
- Course
- Institution
Exam of 8 pages for the course tests 1 at tests 1 (PMB 3212 Exam 1)
[Show more]
Seller
Follow
EXAMQA
Reviews received
Content preview
Biology Unit 8Kingdom Protista - ANS-first eukaryotes - gave rise to fungi, plants, and animals; found
in moist or aquatic habitats; can reproduce sexually or asexually; vary in size, type, and
method of acquiring energy; classified into 3 groups: protozoans (animal-like),
autotrophs (plant-like), or fungus-like
protozoans (animal-like) - ANS-heterotrophs that can move; four major groups: ciliate,
amoebas, flagellates, and sporozoans
molds (fungus-like) - ANS-heterotrophs that cannot move; types: slime molds and water
molds
autotrophs (plant-like) - ANS-autotrophic; range from microscopic to huge seaweeds;
major groups: algae and phytoplankton
ciliates - ANS-Phylum: Ciliophora; unicellular heterotrophs; common in freshwater and
marine habitats; have hundreds of tiny, hairlike cilia projecting from surface; cilia are
used for movement and sweeping food towards oral groove (a.k.a. - mouth); contain
contractile vacuoles to eliminate excess water; contain 2 types of nuclei
examples: Paramecium and Stentor
amoeba - ANS-unicellular heterotroph; found in water and soil; lack cell wall so shape
constantly changes; move and capture food by extending pseudopodia ("false feet") ;
structure: contractile vacuole, pseudopod, endoplasm, ectoplasm, food vacuole
flagellates - ANS-diverse heterotrophs, all contain flagella
sporozoans - ANS-animal parasites carried in the blood and tissues of host; complex life
cycle, sometimes involved multiple hosts; form spores when they reproduce; one variety
causes malaria; cannot move
algae - ANS-multicellular, lack true roots, stems, and leaves so only found in aquatic
environments; three main groups: green, red, and brown
green algae - ANS-(phylum Chlorophyta); uni/multicellular; found in freshwater or damp
soil
red algae - ANS-(phylum Rhodophyta); multicellular; found in deep, warm ocean waters
, brown algae - ANS-(phylum Phaeophyta); multicellular ; among largest organisms on
Earth; found in cold oceans and on coasts; provide shelter for many organisms
diatoms - ANS-unicellular, photosynthetic; geometric shapes; shell-like cases composed
of glass-like substance called silica
euglenoids - ANS-unicellular; photosynthetic and/or heterotrophic; flagellated; contain
an eyespot which directs them towards light
dinoflagellates - ANS-unicellular, most are photosynthetic; 2 flagella & unusual shapes;
responsible for Red Tides which deplete the oceans of oxygen resulting in fish kills
slime molds - ANS-form plasmodia - mass of cytoplasm with many nuclei; use
pseudopodia to feed and move (move 2.5 cm per hour); when conditions are stressful,
stalklike structures containing spores grow
water molds - ANS-common in fresh water; fuzzy growths on decaying matter;
decomposers or parasites; can be hazardous to fish or plants
protists and humans - ANS-industry:
- algae is often eaten or used to thicken food products
- empty shells of diatoms are used in toothpaste and road paint
disease:
- cause a number of human diseases
protists and environments - ANS-- plantlike protists produce half the world's oxygen and
form the base of most aquatic ecosystems
- algal blooms, such as red tide, can also deplete aquatic ecosystems
Kingdom Fungi - ANS-thread-like Bodies; made of long, slender filaments called
hyphae; a dense group of hyphae is a mycelium; heterotrophic decomposers
(saprobes/saprotroph) or parasites (absorption); cell walls contain chitin; reproduce
asexually by spores (can also reproduce sexually); types of Fungi: mushrooms, yeast
(unicellular, used in bread and beer making), and
molds
mushroom structure - ANS-- hyphae are loosely woven through the soil and tightly
packed in the body of the mushroom
- hyphae form a tangled mass, often many meters long, called a mycelium
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 EXAMQA. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $7.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
79373 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now