BI 234 EXAM 1 QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS VERIFIED LATEST UPDATE
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Course
BI 234
Institution
BI 234
BI 234 EXAM 1 QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS VERIFIED LATEST UPDATE
Autotroph
An organism that makes its own food
Heterotroph
organism that obtains energy from the foods it consumes; also called a consumer
Eukaryote
A cell that contains a nucleus and membrane bound organelles...
organism that obtains energy from the foods it consumes; also called a consumer
Eukaryote
A cell that contains a nucleus and membrane bound organelles
Prokaryote
A unicellular organism that lacks a nucleus and membrane bound organelles
Major characteristics of bacteria and archaea
-unicellular
-prokaryotes
-may have flagella
-binary fission
-cell wall
-heterotrophs and autotrophs
Archaea have psuedomurein cell wall; bacteria have peptidoglycan cell wall.
Major characteristics of Fungi
,- heterotrophs
- unicellular or multicellular
- eukaryotes
- non-motile
- mitosis (budding)
- cell wall made of chitin
Major characteristics of Protozoa
- autotrophs and heterotrophs
- unicellular
- eukaryotes
- flagella, cilia, pseudopods, or non-motile
- mitosis
- no cell wall
Major characteristics of Algae
- autotroph
- unicellular and multicellular
- eukaryotes
- non-motile
- mitosis
- cell wall made of cellulose
Major characteristics of Helminthes (parasitic worms)
- heterotrophs
- multicellular
, - eukaryotes
- move by muscles
- mitosis
- no cell wall
Major characteristics of a virus
- acellular
- DNA or RNA
- non-motile
- no cell wall, but have protein coat
Major characteristics of prions
- acellular
- no DNA
they are a protein
Major roles of microbes in the environment
- breakdown and recycle nutrients in the soil.
-photosynthesis
-digestive tracts in humans to help breakdown food to convert to energy
Why are microbes essential for life?
convert chemical compounds into nutrients for other organisms. An example of this is
photosynthesis.
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