BIO 202 EXAM 1 COMPLETE QUESTIONS
WITH 100% RATED DETAILED AND
VERIFIED ANSWERS | 2025/2026 LATEST
UPDATE | GURANTEED PASS WITH A+ IN
THE TEST | BRAND NEW!!!
What are the stages of how life got started? - ANSWER:
1. Nucleotides & amino acids were produced prior to the existence of cells.
2. Organic polymers may have formed on the surface of clay
3. Cell-like structures may have originated when polymers were enclosed by a
boundary
4. Polymers enclosed in membranes acquired cellular properties
What are the 3 hypotheses on how nucleotides and amino acids were produced
prior to the existence of cells? - ANSWER:
1. Reducing Atmosphere Hypothesis
2. Extraterrestrial Hypothesis
3. Deep-sea Vent Hypothesis
,What is a photobiont? - ANSWER:
A self-organized, spherical collection of lipids (natural oils, waxes, and steroids)
What are the 4 characteristics of a photobiont? - ANSWER:
1. Membrane separating internal contents from environment
2. Internal polymers contain info (RNA)
3. Polymers with some kind of metabolism
4. Ability to self-replicate
RNA: 1st macromolecule in photobionts characteristics - ANSWER:
-can store info in nucleotides
-self replicate
-catalyze chemical reactions
-combines properties otherwise found in DNA and proteins
Precambrian Eons: - ANSWER:
Hadean, Archaean, Proterozoic
Major Environmental Changes (5) - ANSWER:
1. Atmosphere
, 2. Landmasses
3. Floods & Glaciations
4. Volcanic Eruptions
5. Meteorite Impacts
Prokaryotes - ANSWER:
Archaean Eon (3.8-2.5 bay)
little O2= anaerobic respiration
autotrophs
heterotrophs
Autotrophs - ANSWER: derive energy from light or chemicals
Heterotrophs - ANSWER: eat other organisms for energy; rely on autotrophs
for the production of food
Eukaryotes - ANSWER: Proterozoic Eon (2.5 bay - 543 mya) have DNA in
nucleus, mitochondria, chloroplasts
Heterotrophs first? - ANSWER: Archaeans living around deep sea vents
Chemosynthesis is basis of energy in these systems
WITH 100% RATED DETAILED AND
VERIFIED ANSWERS | 2025/2026 LATEST
UPDATE | GURANTEED PASS WITH A+ IN
THE TEST | BRAND NEW!!!
What are the stages of how life got started? - ANSWER:
1. Nucleotides & amino acids were produced prior to the existence of cells.
2. Organic polymers may have formed on the surface of clay
3. Cell-like structures may have originated when polymers were enclosed by a
boundary
4. Polymers enclosed in membranes acquired cellular properties
What are the 3 hypotheses on how nucleotides and amino acids were produced
prior to the existence of cells? - ANSWER:
1. Reducing Atmosphere Hypothesis
2. Extraterrestrial Hypothesis
3. Deep-sea Vent Hypothesis
,What is a photobiont? - ANSWER:
A self-organized, spherical collection of lipids (natural oils, waxes, and steroids)
What are the 4 characteristics of a photobiont? - ANSWER:
1. Membrane separating internal contents from environment
2. Internal polymers contain info (RNA)
3. Polymers with some kind of metabolism
4. Ability to self-replicate
RNA: 1st macromolecule in photobionts characteristics - ANSWER:
-can store info in nucleotides
-self replicate
-catalyze chemical reactions
-combines properties otherwise found in DNA and proteins
Precambrian Eons: - ANSWER:
Hadean, Archaean, Proterozoic
Major Environmental Changes (5) - ANSWER:
1. Atmosphere
, 2. Landmasses
3. Floods & Glaciations
4. Volcanic Eruptions
5. Meteorite Impacts
Prokaryotes - ANSWER:
Archaean Eon (3.8-2.5 bay)
little O2= anaerobic respiration
autotrophs
heterotrophs
Autotrophs - ANSWER: derive energy from light or chemicals
Heterotrophs - ANSWER: eat other organisms for energy; rely on autotrophs
for the production of food
Eukaryotes - ANSWER: Proterozoic Eon (2.5 bay - 543 mya) have DNA in
nucleus, mitochondria, chloroplasts
Heterotrophs first? - ANSWER: Archaeans living around deep sea vents
Chemosynthesis is basis of energy in these systems
