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BIO 101 Exam 2 > Practice Exam > Flashcards

Practice Exam Flashcards

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1
Q

By what process does carbon enter the living aspect of terrestrial ecosystems, and from what reservoir is id drawn?

A

photosynthesis, from the atmosphere

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2
Q

If grasshoppers eat grass and are eaten by birds what tropic level are grasshoppers?

A

Primary consumers

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3
Q

If radioactive phosphorus were applied to an ecosystem as a dilute solution which organisms would you expect to have the radioactive tissue first?

A

Plants

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4
Q 
Which of the following anthropogenic substances would you expect to have a cooling influence on the cimate?
A-aerosols
B-CFCs
C- Carbon Dioxide
D- Methane
E-None of the above
A

A- aerosols

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5
Q

In terrestrial ecosystems, what do the bacteria Rhixobium, Bradyrhixobium, and cyanobacteria such as Nostoc and Anabaena have in common?

A

The fix atmospheric nitrogen

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6
Q 
Which of the following ecosystems has the highest net primary productivity per unit area?
A-Open ocean
B-boreal forest
C-Arid grassland
D-Arctic tundra
E-tropical rain forest
A

E-Tropical rain forest

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7
Q

make the following statement about the movement of matter and energy in ecocystems true. (with relation to recycling)
Matter______, Energy ______

A

recycles

Does not

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8
Q

A man is stranded on a desert island with NO VEGETATION for some reason an intact crate of corn flakes washes ashore with him, and a crate of 15 live chickens what should he do to survive the longest?

A

Eat the chickens then eat the corn flakes

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9
Q

Which of the following statements abou the cycling of Nitrogen in the biosphere are essentially correct?
A-The atmosphere is the most important nonliving reservoir of Nitrogen
B-Changes in the concentration of atmospheric Nitrogen exhibit a profound effect on the climate.
C-Nitrogen fixation is limited to a few species of organisms, including members of the genus Rhizobium, Anabaena, and Bradyrhyxobium
D-A and C

A

D- A and C

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10
Q

Which statements about global climate change are scientific statements supported by evidence?
A-All things must live in harmony with nature, or nature will act to restore the balance.
B-Atmospheric concentrations of CO2 have increased dramatically over the last century.
C-High atmospheric concentrations of CO2 are linked to warm periods in the history of the Earth.
D-B and C
E- All of the above

A

D- B and C

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11
Q 
Which of the following platary boundaries has our species already crossed?
A-Insufficient room to live
B-Global biodiversity loss
C- Climate change
D- Global fresh water availability
E-B and C
A

E- B and C

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12
Q

About how many protein-coding genes are there in the human genome

A

24,000

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13
Q 
Which of the following genetic processes provide genetic diversity among products of a meiotic division?
A-linkage
B-recombination
C-Assortment
D-Mitosis
E-A and C
A

E-A and C

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14
Q

Which of the following statements about genes, alleles, and loci, are essentially correct?
A-A gene is a sequence of DNA that codes for a single protein, in a single tissue with a single function.
B-A locus is the location of a gene in the genome, and is a place where allelic variation may occur from one individual to the next.
C-Typically, different individuals in a population have different alleles at some genetic loci, but not others.
D-B and C
E-All of the above

A

D-B and C

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15
Q

Which of the following statements about the allele that causes sickle cell anemia are correct?
A- it is a recessive allele.
B-It is caused by a single-nucleotide substitution
C-It is on the Y chromosome
D-A and B
E-All of the above

A

D- A and B

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16
Q 
Which of the following disorders is caused by an error in the process of melosis?
A-Marfan syndrome
B-Lissencephaly
C-Down Syndrome
D-Turners Syndrome
E-C and D
A

E- C and D

17
Q 
Which of the following scientists, are usually not given the same credit for their discoveries as contemporary scientists they worked alongside, or who came up with the same ideas?
A-Rosalind Franklin
B-Alfred Russell Wallace
C-Gregor Mendel
D-A and B
E-None of the above
A

D- A and B

18
Q

Which effects of GMO maize are actual or scientifically supported?
A-Known to causes cancer in lab animals.
B-Are grown in massive non sustainable monocultures.
C-Lack genetic variation and are sold by corporations, breaking the evolutionary relationship between farmer and the crops.
D-All of the above
E-B and C

A

E-B and C

19
Q

A student is being tested for “psychic abilities” in the medieval science lab. She draws 25 cards, each of which has one of 5 symbols on the back, these symbols occur at equal frequency and the deck has been shuffled. Assuming the protocols are the same as the lab manual-what are the expected numbers of correct and incorrect answers and how many degrees of freedom?

A

A-5 correct, 20 incorrect, 1 degree

20
Q

What is the evolutionary significance of the tight linkage of the three loci for pin vs. thrum phenotypes in wild primroses?

A

It encourages outcrossing.

21
Q

Why is that most terrestrial ecosystems have five or fewer links in the longest food chain?

A

Only a fraction of the energy at each trophic level is passed to a higher trophic level, which severely curtails the amount of energy available to the top trophic levels, and prohibits long food chains.

22
Q

Available scientific evidence suggests that the age of the earth is

A

4.5 billion years

23
Q

What is the significance of evolutionary biology to the control of harmful insect species?

A

An understanding of evolution provides insight into the origin, spread, and dangers of pesticide resistance in insect species that are pests.

24
Q

What does the fossil record say about the origin of tetrapods?

A

Fossil tetrapods, document aquatic and semi-aquatic member of lineages that had evolved limbs and shoulder girdles, but there is no smooth transition from terrestrial to aquatic forms.

25
Q

Which of the following are actual potential examples of adaptation
A-Jaws of a spinosaur were long and thin, features associated with catching fish and aquatic creatures.
B-The jaws of Tyrannosaurus rex were extremely strong, and the teeth blunt features associated with crushing bones.
C-Mosquitoes in Bangkok evolved the ability to circumvent the toxicity of DDT.
D-Nothosaurs, which existed in the Triassic period, went extinct.
E-A B and C

A

E- A B and C

BIO 101 Exam 2 (3 decks)

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