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ASU BIO 182 EXAM 2
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Exam of 3 pages for the course ASU BIO 182 at ASU BIO 182 (ASU BIO 182 EXAM 2)
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ASU BIO 182 EXAM 2Know the key characteristics of the Domain Eukaryota - Answers --Have cells that are
larger than bacteria and archaea
-Have a nucleus
-Have organelles
-Asexual and sexual production
Be familiar with the evidence for the endosymbiosis theory and the origin of
mitochondria - Answers -Origin of mitochondria: bacteria (that ended up turning into
mitochondria) took up residence inside an archaea cell
Evidence: Size & structure of bacteria resembles mitochondria, mitochondria have
double membranes, and they have their own DNA
Know that protists vary widely on how they obtain food and be able to recognize
examples of protists that are parasites, predatory, and photosynthetic protist - Answers -
Ingesting food, absorbing organic molecules from the environment, and performing
photosynthesis
Many absorptive feeders are parasites
Know the difference between ingestive and absorptive feeding. Know what the term
phagocytosis means - Answers -Ingestion: Eat live or dead organisms, eat bacteria,
archaea, or other protists whole (This is called phagocytosis)
Absorption: Nutrients taken from environment and moved across the plasma membrane
Be aware of the different types of reproduction in protists including the difference
between asexual and sexual reproduction - Answers -Asexual reproduction: Based on
mitosis and cell division
Sexual reproduction: Based on meiosis and fusion of gametes
Know the key characteristics of fungi that distinguish them from other eukaryotes -
Answers -Have a cell wall, absorptive nutrition, have filamentous body or are single
celled
Understand the meaning of these terms with regard to the fungal vegetative body:
mycelium, hyphae, yeast, and septate - Answers -Mycelium: Filamentous body
Individual hyphae grow from their tips
Yeast are a single celled fungi
Know what absorptive nutrition is. Know the difference between decomposers,
parasites, and mutualists - Answers -Decomposers: Absorb nutrients from dead
organisms
Parasites: Absorb nutrients from their host
Mutualists: Live in association with other organisms that benefit their symbiotic partner
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