Bio 1500 Final Exam Questions and
Answers 100% Pass
Dragonflies - ✔✔Formidable aerial and aquatic predators
Identify dragonflies as ancient insects (when, what, why) - ✔✔Carboniferous period
(360 - 300 mya)
Identify huge body size as the outstanding characteristic of animals (including
dragonflies) during the carboniferous period - ✔✔...
Dates of major milestones in the history of life on earth, as indicated in the online
learning module - ✔✔Earth formed - 4.6 bya
Oldest rocks - 3.8 bya
Oldest fossils (= signs of life) - 3.5 bya
Cyanobacteria - 2500 mya
Algea - 1200 mya
Cambrian Explosion - 545 mya
First dinosaurs - 230 mya
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,First birds - 150 mya
Dinosaur extinction - 65 mya
Modern humans - 200,000 ya
Identify interesting and 'unusual' events in the history of earth - ✔✔"Snowball" - ice
ages: the whole earth froze and created a giant ice ball, which was caused by the
Pangea, meaning instead of there being seven continents, there was only one
supercontinent.
Cambrian explosion: The animals alive during this period are what interested me the
most, they almost look like crustaceans, but they are a million times bigger, which
astonished me. One of the animals described had five eyes!
Recall environmental characteristics of the Carboniferous period - ✔✔At the beginning
of the carboniferous period, it is assumable that once again we have a giant continent
with only small break offs, and just complete water at the two poles. The continent
begins to expand to the poles, but one side of the earth still has no land and strictly just
water. Oxygen during this tie was at a pearl or beginning to peak ,eating that this was a
time where oxygen on the earth was higher than the eras before.
Relate changes of O2 levels in the atmosphere to biological events in the history of life -
✔✔Oxygen concentration is a key physiological control on body size, especially in
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, groups like flying insects that have high metabolic oxygen demands. So, the more
oxygen in the air, the more consumption of oxygen by the dragonflies, increasing their
organs, and overall their size.
Recognize that all O2 on earth stems from biological processes - ✔✔O2 was created by
cyanobacteria, which are green bacteria that harvest energy from the sun and create
sugars, while O2 was the byproduct. (Photosynthesis)
Recognize the geology of earth has been dramatically changed by biology - ✔✔60% of
earth's minerals are biogenic, which means the earth's minerals use oxygen produced
by life; they were generated through life.
Describe the mechanism of diffusion at the level of single particles - ✔✔From high
concentration to low concentration
Describe the pattern observed due to diffusion at the level of many particles - ✔✔...
Explain how the behavior of single particles explains the observed pattern at the many
particles level - ✔✔Each particle moves on its own, going from a naturally high
concentration to a low one, but this occurs by random particle movements. The particles
naturally go to a lower concentration, but this happens only by the particles colliding
with other moving particles. This then leads us to be able to predict, generally, where
the molecules are going, because as we stated, we cannot predict the exact movement of
each individual particle.
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Answers 100% Pass
Dragonflies - ✔✔Formidable aerial and aquatic predators
Identify dragonflies as ancient insects (when, what, why) - ✔✔Carboniferous period
(360 - 300 mya)
Identify huge body size as the outstanding characteristic of animals (including
dragonflies) during the carboniferous period - ✔✔...
Dates of major milestones in the history of life on earth, as indicated in the online
learning module - ✔✔Earth formed - 4.6 bya
Oldest rocks - 3.8 bya
Oldest fossils (= signs of life) - 3.5 bya
Cyanobacteria - 2500 mya
Algea - 1200 mya
Cambrian Explosion - 545 mya
First dinosaurs - 230 mya
100% Pass Guarantee Sophia Bennett, All Rights Reserved © 2025 1
,First birds - 150 mya
Dinosaur extinction - 65 mya
Modern humans - 200,000 ya
Identify interesting and 'unusual' events in the history of earth - ✔✔"Snowball" - ice
ages: the whole earth froze and created a giant ice ball, which was caused by the
Pangea, meaning instead of there being seven continents, there was only one
supercontinent.
Cambrian explosion: The animals alive during this period are what interested me the
most, they almost look like crustaceans, but they are a million times bigger, which
astonished me. One of the animals described had five eyes!
Recall environmental characteristics of the Carboniferous period - ✔✔At the beginning
of the carboniferous period, it is assumable that once again we have a giant continent
with only small break offs, and just complete water at the two poles. The continent
begins to expand to the poles, but one side of the earth still has no land and strictly just
water. Oxygen during this tie was at a pearl or beginning to peak ,eating that this was a
time where oxygen on the earth was higher than the eras before.
Relate changes of O2 levels in the atmosphere to biological events in the history of life -
✔✔Oxygen concentration is a key physiological control on body size, especially in
100% Pass Guarantee Sophia Bennett, All Rights Reserved © 2025 2
, groups like flying insects that have high metabolic oxygen demands. So, the more
oxygen in the air, the more consumption of oxygen by the dragonflies, increasing their
organs, and overall their size.
Recognize that all O2 on earth stems from biological processes - ✔✔O2 was created by
cyanobacteria, which are green bacteria that harvest energy from the sun and create
sugars, while O2 was the byproduct. (Photosynthesis)
Recognize the geology of earth has been dramatically changed by biology - ✔✔60% of
earth's minerals are biogenic, which means the earth's minerals use oxygen produced
by life; they were generated through life.
Describe the mechanism of diffusion at the level of single particles - ✔✔From high
concentration to low concentration
Describe the pattern observed due to diffusion at the level of many particles - ✔✔...
Explain how the behavior of single particles explains the observed pattern at the many
particles level - ✔✔Each particle moves on its own, going from a naturally high
concentration to a low one, but this occurs by random particle movements. The particles
naturally go to a lower concentration, but this happens only by the particles colliding
with other moving particles. This then leads us to be able to predict, generally, where
the molecules are going, because as we stated, we cannot predict the exact movement of
each individual particle.
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