BIO 182 Exam 2 Latest Update -

BIO 182 Exam 2 Latest Update - Exam 80 Questions and 100% Verified Correct Answers Guaranteed A+ Approved by the 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?

• "Fungi can only survive on logs that are still alive."
• "It didn't get enough sunlight for photosynthesis."
• "Perhaps the seeds weren't fertilized by enough pollen."
• "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 1 / 3

• new species.
• physiological aberrant.
• hybrid.

d. mutant. - CORRECT ANSWER: c. hybrid

A diagram used to describe relationships between organisms is known as a

• taxonomic listing.
• tributary branching.
• 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?

• the mule is bigger than both the donkey and the horse
• the mule is sterile
• the mule can only mate with donkeys
• 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?

• 10 years
• 100 years
• 1 thousand years
• 1 million years

e. 10 million years - CORRECT ANSWER: e. 10 million years

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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?

• ocean
• forest floor
• 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

• vibrio, spirochete, and orthogonal.
• cocci, bacilli, and spirilli.
• whip, chain, and wheel.
• 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.

• sexual reproduction
• motility
• feeding

d. self defense - CORRECT ANSWER: b. motility

• 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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