EOSC 315 Midterm Exam Questions and Correct Answers (Already Graded A+)
Which of the Ocean Biomes is characterized by low year-round precipitation and little to no seasonality? - Answer- subtropical
Which of the following is the least likely to be considered "plankton" for any portion of its li...
Which of the Ocean Biomes is characterized by low year-round precipitation and little to
no seasonality? - Answer- subtropical
Which of the following is the least likely to be considered "plankton" for any portion of its
life? - Answer- adult tuna
The ______ is the portion of the ocean where life is most abundant. - Answer-
epipelagic
Where can you find amino acids (AA)? - Answer- protein molecules, Milley-urey
experiment, on meteorites
Carbon Dioxide concentrations, a greenhouse gas, in our atmosphere are currently the
highest ever recorded. - Answer- false
Free oxygen began to appear on the Earth's surface when ______. - Answer- bacteria
evolved photosynthesis
Which of the following is a clear weakness of the Miller Urey experiment in terms of
explaining the origins of life? - Answer- The energy used in the system is not similar to
any process known to naturally occur.
The Miller-Urey experiment proved that ______. - Answer- simple organic molecules
can be synthesized from simple abiotic molecules and electric energy
What type of tide occurs at Kitsilano Beach in Vancouver? - Answer- mixed semi-diurnal
Which of the following does NOT support the hypothesis that life originated in the
ocean? - Answer- All present day organisms are aerobic
Since the formation of the Earth up to present time, the Earth has been mostly
dominated by anaerobic (not dependent on oxygen) organisms. - Answer- true
, Which day in September (2021) has the lowest tide of the following choices? - Answer-
idk
Which of the following best explains why it is difficult to pinpoint the exact date where
photosynthesis first evolved on Earth? - Answer- bacteria cells do not preserve well in
fossils
What are attributes of a living thing? - Answer- 1. The ability to obtain and utilize energy
for work
2. The ability to regulate its internal environment in response to the external
environment
3. The ability to perpetuate itself indefinitely
4. Composed of organic molecules
Which of the following statements is correct in terms of photosynthesis? - Answer-
Which of the following best describes SPRING tides? - Answer- The difference between
the highest high tide and the lowest tide over a 24 hour period is the greatest. When
there's a new and full moon
Evolution means 'descent with modification'. - Answer- True
What are the 4 ecological roles of dinoflagellates? - Answer- 1. mixotrophs
2. create DMS
3. produce toxins
4. photosynthetic symbiont (zooxanthaelle)
What are 3 adaptations of dinoflagellates? - Answer- 1. "flagella" allows for vertical
movement (up during day and down during night)
2. toxin producing
3. bioluminescence
How do dinoflagellates reproduce? - Answer- binary fission (each new cell is the same
size as the previous)
Harmful Algal Blooms (HABs) - Answer- accumulations of fast-growing, dense patches
of algae (dinoflagellates)
Describe dinoflagellate symbiotic relationship with other organisms - Answer-
Autotrophic dinos reside in other organisms. They photosynthesize and release organic
matter to the organism. Often in relationship with corals
What are coccolithophores? - Answer- single-celled algae with a calcium carbonate
shell.
what do coccolithophores look like? - Answer- spherical with a calcium carbonate shell
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