©THESTAR 2024/2025 ALL RIGHTS RESERVED 1:27PM. A+
Bio 1500 Final Exam Review Questions And
Answers |Latest 2025 | Guaranteed Pass
Suppose you worked very hard and have earned a 100% average for lab this semester. You have
unexcused absences for many Discussions, though, giving you a Discussion average of 60%.
How is your combined 'Lab and Discussion' score for the course calculated and what will it be? -
Answer✔Lab and Discussion Score are multiplied and the combined score would be 60%
Think about the Timeline and the "From LA to NY - Deep time analogy" videos reviewed in the
course. They show us that the major events in the history of life happened .................. -
Answer✔Most events happened in the last 1 billion years
Which of the following organisms evolved the earliest among them and which one was the last
one to appear on earth?
dinosaurs - cyanobacteria - dragonflies (e.g. meganeura) - first animals - Answer✔Evolved first:
cyanobacteria
Last one to appear: dinosaurs
Simple diffusion is very efficient for moving molecules around inside cells, but it is inefficient for
moving molecules from one part of the body to another part of the body. Why? -
Answer✔Since the time of diffusion increases with the square of the distance, diffusion is to
slow to move molecules around the body.
Which statement describes best the feeding habits of adult dragonflies? - Answer✔Adult
dragonflies hunt other flying insects while they are flying themselves; they cannot feed while
walking or sitting.
Thinking about the online lecture on the history of Oxygen: Which process/factor explains the
low level of atmospheric Oxygen from 2.5 to 1 billion years ago, despite the presence of
photosynthetic activities by cyanobacteria and algae? - Answer✔The O2 oxidized other
substances (e.g. iron or silicone) resulting in most of today's minerals
1|Page
, ©THESTAR 2024/2025 ALL RIGHTS RESERVED 1:27PM. A+
Diffusion is often defined as 'the movement of molecules from an area of high concentration to
an area of low concentration.' Which of the following statements best explains the reason for
this pattern of movement? - Answer✔The molecules move randomly, resulting in more of them
moving away from a high-density area than moving away from a low-density area.
According to the Earth viewer activity you did as one of your online learning assignments, the
atmospheric Oxygen level in the Carboniferous period was lower and the Carbon Dioxide level
was higher than/as today. - Answer✔higher
A drop of dye was put in a glass of water. After many hours, the dye is equally distributed in the
water, thus, diffusions has reached equilibrium. How do dye particles behave when equilibrium
has been reached? - Answer✔The dye particles switch places with neighboring dye particles
Which is the correct scientific definition of evolution? - Answer✔The change of allele
frequencies in a population over time
In a population of minnows (=little fish) living in a stream, individuals with long bodies are able
to swim faster than minnows with shorter bodies. Body length is determined by an individual's
genes. A large predatory fish invades the stream and begins feeding on the minnows. Over
time, the average length of the minnows in the population increases. Why? - Answer✔Minnows
with long bodies are reproducing more than minnows with short bodies.
Why do cells perform photosynthesis? - Answer✔to make glucose/carbohydrates
When do mutations occur? - Answer✔at random times
You talk with a friend from school about natural selection. Your friend states: "A random
process like natural selection could never come up with such great features like our eyes!"
Which statement would correct this misconception? - Answer✔Natural selection is not random,
as it is not by chance which individuals survive and reproduce and which ones not.
On a bright summer day, most plants turn their chloroplasts away from the Sun to slow down
photosynthesis instead of using the energy in the sunlight to produce glucose. What is the
reason for this unexpected behavior? - Answer✔Too much O2 would be produced in the
chloroplasts, which would damage the molecules involved in photosynthesis
Think about the data analyzed in the Clapham and Karr paper: Which statement provides the
evidence that dragonfly size is related to oxygen levels during part of Earth's history? -
Answer✔Between about 300 and 150 million years ago, there is a correlation between oxygen
levels and maximum dragonfly size.
Suppose you set up an experiment in which you have three jars containing cultures of
photosynthetic algae. One jar is placed under green light, one under red light and the third is
placed under blue light. All other conditions are held the same between the three jars.
Which one is likely to exhibit the lowest rate of photosynthesis? - Answer✔the jar under green
light will have the lowest rate of photosynthesis
2|Page
Bio 1500 Final Exam Review Questions And
Answers |Latest 2025 | Guaranteed Pass
Suppose you worked very hard and have earned a 100% average for lab this semester. You have
unexcused absences for many Discussions, though, giving you a Discussion average of 60%.
How is your combined 'Lab and Discussion' score for the course calculated and what will it be? -
Answer✔Lab and Discussion Score are multiplied and the combined score would be 60%
Think about the Timeline and the "From LA to NY - Deep time analogy" videos reviewed in the
course. They show us that the major events in the history of life happened .................. -
Answer✔Most events happened in the last 1 billion years
Which of the following organisms evolved the earliest among them and which one was the last
one to appear on earth?
dinosaurs - cyanobacteria - dragonflies (e.g. meganeura) - first animals - Answer✔Evolved first:
cyanobacteria
Last one to appear: dinosaurs
Simple diffusion is very efficient for moving molecules around inside cells, but it is inefficient for
moving molecules from one part of the body to another part of the body. Why? -
Answer✔Since the time of diffusion increases with the square of the distance, diffusion is to
slow to move molecules around the body.
Which statement describes best the feeding habits of adult dragonflies? - Answer✔Adult
dragonflies hunt other flying insects while they are flying themselves; they cannot feed while
walking or sitting.
Thinking about the online lecture on the history of Oxygen: Which process/factor explains the
low level of atmospheric Oxygen from 2.5 to 1 billion years ago, despite the presence of
photosynthetic activities by cyanobacteria and algae? - Answer✔The O2 oxidized other
substances (e.g. iron or silicone) resulting in most of today's minerals
1|Page
, ©THESTAR 2024/2025 ALL RIGHTS RESERVED 1:27PM. A+
Diffusion is often defined as 'the movement of molecules from an area of high concentration to
an area of low concentration.' Which of the following statements best explains the reason for
this pattern of movement? - Answer✔The molecules move randomly, resulting in more of them
moving away from a high-density area than moving away from a low-density area.
According to the Earth viewer activity you did as one of your online learning assignments, the
atmospheric Oxygen level in the Carboniferous period was lower and the Carbon Dioxide level
was higher than/as today. - Answer✔higher
A drop of dye was put in a glass of water. After many hours, the dye is equally distributed in the
water, thus, diffusions has reached equilibrium. How do dye particles behave when equilibrium
has been reached? - Answer✔The dye particles switch places with neighboring dye particles
Which is the correct scientific definition of evolution? - Answer✔The change of allele
frequencies in a population over time
In a population of minnows (=little fish) living in a stream, individuals with long bodies are able
to swim faster than minnows with shorter bodies. Body length is determined by an individual's
genes. A large predatory fish invades the stream and begins feeding on the minnows. Over
time, the average length of the minnows in the population increases. Why? - Answer✔Minnows
with long bodies are reproducing more than minnows with short bodies.
Why do cells perform photosynthesis? - Answer✔to make glucose/carbohydrates
When do mutations occur? - Answer✔at random times
You talk with a friend from school about natural selection. Your friend states: "A random
process like natural selection could never come up with such great features like our eyes!"
Which statement would correct this misconception? - Answer✔Natural selection is not random,
as it is not by chance which individuals survive and reproduce and which ones not.
On a bright summer day, most plants turn their chloroplasts away from the Sun to slow down
photosynthesis instead of using the energy in the sunlight to produce glucose. What is the
reason for this unexpected behavior? - Answer✔Too much O2 would be produced in the
chloroplasts, which would damage the molecules involved in photosynthesis
Think about the data analyzed in the Clapham and Karr paper: Which statement provides the
evidence that dragonfly size is related to oxygen levels during part of Earth's history? -
Answer✔Between about 300 and 150 million years ago, there is a correlation between oxygen
levels and maximum dragonfly size.
Suppose you set up an experiment in which you have three jars containing cultures of
photosynthetic algae. One jar is placed under green light, one under red light and the third is
placed under blue light. All other conditions are held the same between the three jars.
Which one is likely to exhibit the lowest rate of photosynthesis? - Answer✔the jar under green
light will have the lowest rate of photosynthesis
2|Page
