Brooks Biodiversity Unit 1 Exam UPDATED ACTUAL Exam Questions and CORRECT Answers
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Brooks Biodiversity
Institution
Brooks Biodiversity
Brooks Biodiversity Unit 1 Exam
UPDATED ACTUAL Exam Questions and
CORRECT Answers
evolution - CORRECT ANSWER- the concept that all given organisms are related to
each other though common ancestry
Have scientists proven that life exists? - CORRECT ANSWER- No
Big Bang - CORRECT ANSWER- Theory...
Brooks Biodiversity Unit 1 Exam
UPDATED ACTUAL Exam Questions and
CORRECT Answers
evolution - CORRECT ANSWER✔✔- the concept that all given organisms are related to
each other though common ancestry
Have scientists proven that life exists? - CORRECT ANSWER✔✔- No
Big Bang - CORRECT ANSWER✔✔- Theory of how the universe formed 16-18 billion
years ago
Symbiosis - CORRECT ANSWER✔✔- the interaction between two different organisms
living in close association
"life coming together"
Spontaneous Generation - CORRECT ANSWER✔✔- Theory that life arose spontaneously
from inanimate matter. Not a widely held belief among scientists
Biogenesis Hypothesis - CORRECT ANSWER✔✔- Theory that living matter created by
pre-existing living matter
Haldane-Oparin Hypothesis - CORRECT ANSWER✔✔- "Chemical Evolution"
Life arose spontaneously from early atmospheric compounds. It was believed that the early
atmosphere contained methane, ammonia, and water. When combined with energy sources,
life arose. This is the original theory of how life arose, but is likely INCORRECT.
Miller-Urey Experiment - CORRECT ANSWER✔✔- Tested the Haldane-Oparin Hypothesis
by conducting an experiment that simulated the conditions thought at the time to be present
on earth, and tested for the occurrence of chemical origins of life. They took inorganic
compounds and made organic compounds (mostly amino acids). DID NOT PROVE
ANYTHING
, Panspermia - CORRECT ANSWER✔✔- Hypothesis that organic molecules were brought to
earth by meteorites/asteroids. Basically, life was seeded from outer space, and that life exists
throughout the universe distributed by meteoroids, asteroids, comets, and planetoids.
Modern Theory of How Life Arose - CORRECT ANSWER✔✔- (STILL NOT PROVEN,
ONLY LIKELY) life arose spontaneously from simple molecules (CO, CO2, N2,H2 (very
little because it was in little abundance), and H2O), then combined into larger, complex
macromolecules such as proteins, carbohydrates, lipids, and nucleic acids. (NOT from
methane, ammonia, and water as Haldane-Oparin hypothesized)
Primordial Soup Hypothesis - CORRECT ANSWER✔✔- Hypothesized that the first
organisms were heterotrophs because they consumed the abundant food molecules present in
the atmosphere
The Cell - CORRECT ANSWER✔✔- the basic form of an entity
The Cell Theory - CORRECT ANSWER✔✔- every life form (from bacteria to humans) is
made up of/comes from cells
Steps of the development of cells - CORRECT ANSWER✔✔- 1. Spontaneous formation of
simple molecules (Carbohydrates, lipids, proteins, and nucleic acids)
2. Formation of lipid bilayer, polymers, and Protien-RNA systems.
3. Lipid Bilayer forms selectively permeable barrier that contains an enclosed self-replicating
system. Closed system contains DNA, RNA, proteins, and enzymes. (VERY IMPORTANT!)
4. Abiotic (derived from non-living things) formation of protobiont (initial structures during
the origin of life which can show at least one propery of life) using self-replicating molecules
5. Composition of anaerobic prokayotic cells, then followed by aerobic and photosynthetic
prokaryotic cells
6. Single celled eukaryotic cells form and then evolve into multicellular organisms
DNA vs RNA. Which came first? - CORRECT ANSWER✔✔- Scientists believe RNA was
first genetic material because RNA can also form ribozymes which catalyze reactions
Unresolved Problems of the Modern Theory of How Life Arose - CORRECT ANSWER✔✔-
1. Formation of large, complex organic molecules via dehydration or condensation bonds in
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