BIO 182 Exam 2 Latest Update 2024-2025 Actual
Exam 80 Questions and 100% Verified Correct
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Professor
_____ are the only organisms that perform nitrogen fixation. - CORRECT ANSWER:
Prokaryotes
_____ began providing molecular oxygen to the anoxic atmosphere of early earth after
evolving from bacterial phototrophs which had evolved about a billion years earlier. -
CORRECT ANSWER: Cyanobacteria
_____ forms a symbiotic relationship with zooxanthellae, which are photosynthetic
dinoflagellates that provide nutrients for the organism to secrete a calcium carbonate
skeleton. - CORRECT ANSWER: coral
_____ is the most important function of fungi in the environment. - CORRECT
ANSWER: nutrient recycling
A company sells plug spawn which can be inserted into a log for growing your own
gourmet mushrooms. Your bought your sister a kit for her birthday, but weeks after
inserting the plug she can't see a single mushroom. "My spawn must have died!" What
is your response?
a. "Fungi can only survive on logs that are still alive."
b. "It didn't get enough sunlight for photosynthesis."
c. "Perhaps the seeds weren't fertilized by enough pollen."
d. "The mycelium is not visible inside the log. Be patient and fruiting bodies will appear
later." - CORRECT ANSWER: d. "The mycelium is not visible inside the log. Be patient
and fruiting bodies will appear later."
A cross between two different species results in a
,a. new species.
b. physiological aberrant.
c. hybrid.
d. mutant. - CORRECT ANSWER: c. hybrid
A diagram used to describe relationships between organisms is known as a
a. taxonomic listing.
b. tributary branching.
c. phylogenetic tree.
d. lifeform scaling. - CORRECT ANSWER: c. phylogenetic tree
A donkey and a horse can mate and produce a mule. Why are they not considered to be
the same species?
a. the mule is bigger than both the donkey and the horse
b. the mule is sterile
c. the mule can only mate with donkeys
d. the mule will only mate with other mules
e. the mule will only mate with horses - CORRECT ANSWER: B. The mule is sterile
A giant asteroid is headed straight for the planet! Scientists speculate that the impact
could cause a mass extinction similar to the five major events in the past. If you wait in
your underground bunker till Earth's biodiversity recovers, how long are you likely to be
waiting?
a. 10 years
b. 100 years
c. 1 thousand years
d. 1 million years
e. 10 million years - CORRECT ANSWER: e. 10 million years
, A superhighway is put down in a field separating a population of snails. Over time, they
acquire mutations and become two different species. This is an example of _____
speciation. - CORRECT ANSWER: allopatric
Allopatric speciation is best explained by _____ isolation. - CORRECT ANSWER:
geographical
Although fungi can be found in a wide variety of environments, most members are found
in what habitat?
a. ocean
b. forest floor
c. grasslands
d. freshwater lakes, streams, and ponds - CORRECT ANSWER: b. forest floor
Although prokaryotes come in a variety of shapes, the three main ones are
a. vibrio, spirochete, and orthogonal.
b. cocci, bacilli, and spirilli.
c. whip, chain, and wheel.
d. staphylo, strepto, and bacillo. - CORRECT ANSWER: b. cocci (spherical-shaped),
bacilli (rod-shaped), and spirilli (spiral-shaped)
Amoebas can use pseudopods to do what types of activities? Select all that apply.
a. sexual reproduction
b. motility
c. feeding
d. self defense - CORRECT ANSWER: b. motility
c. feeding
Antibiotic resistance can develop when overusing antibiotics. Why shouldn't a person ill
with the flu or a cold use antibiotics?
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