BISC 1005 Midterm Questions with
Detailed Verified Answers for Accuracy
Question: microbiome
Answer: all the organisms that live in symbiotic relationships
with humans; changes constantly; every aspect of your life
impacts the diversity; affects digestion, immune system,
development, and stress/psychological issues
Question: LUCA
Answer: last universal common ancestor
Question: abiotic factor
Answer: nonliving factors; temperature, pH (acidity), soil
composition, water, sunlight, air, geography
Question: biotic factor
Answer: living factors; organisms (producers, consumers,
decomposers, microscopic organisms, etc.)
Question: prokaryotes
Answer: small cell size; no nucleus; no membrane-bound
organelles; asexual reproduction; unicellular; simplistic
, ACCURACY IS GUARANTEED
structure and function; bacteria live everywhere and archaea
live mainly in extreme environments
Question: eukaryotes
Answer: larger cell size; nucleus; membrane-bound organelles;
sexual reproduction; mostly multicellular; complex internal
structures and functions; more limited environments
Question: endosymbiotic theory
Answer: a large eukaryotic cell engulfed (ate) a smaller
prokaryote
Question: organization of life
Answer: cell → tissue → organ → organ system → organism
Question: water
Answer: polarity of water allows for both adhesion (one
substance attracted to another substance) and cohesion (the
same molecules attracted to each other)
Question: competition
Answer: -/- interaction; both species are harmed
Question: exploitation
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Answer: +/- interaction; one species benefits while the other is
harmed
Question: commensalism
Answer: +/0 interaction; where one species benefits at no cost
to the other
Question: mutualism
Answer: +/+ interaction; where both species benefit increasing
the survival and reproduction of both the interacting species
Question: Calorie v. calorie
Answer: big C means 1000Xs (this is the energy level you
operate at)
Question: ecosystem
Answer: a defined space plus the nonliving (abiotic) and living
(biotic) factors in that space
Question: levels of organization in an ecosystem
Answer: individual → population → community → biome →
biosphere
Question: autotrophs