Biology 211 Exam 1 - Lowa State
University 2025/2026 Exam Questions
with 100% Correct Answers | Latest
Update
What are the 5 fundamental traits of life? With these traits in mind, are
viruses alive? What evidence supports your conclusion? - 🧠 ANSWER ✔✔-
Energy Use and Metabolism
-Cell Theory
-Information, Genetics
-Replication or reproduction
-Biological Evolution
-No, viruses are not alive because they do not have cells.
How do hypotheses and theories differ? What do scientists mean by
"theory" and does this mean the same thing as "in theory" that non-
,scientists may say in conversation? Explain. - 🧠 ANSWER ✔✔A hypothesis
is a constructed idea before any applicable research has been done. A
theory is an idea supported by evidence.
When scientists say theory, they mean something that is true and
supported by evidence. When it is used in everyday conversations, it is
simply an idea that hasn't been proven, aka a hypothesis.
Write the Cell Theory in your own words. Did the Cell Theory challenge or
support the concept of spontaneous generation? Explain. - 🧠 ANSWER
✔✔Cell Theory: All cells come from pre-existing cells.
The Cell Theory challenged Spontaneous Generation and tested against it
through the Pasteur Flask Experiments.
Outline Pasteur's swan-necked flask experiment. What was the one
variable that differed between the test and experimental groups? Why is it
important to test one variable at a time? - 🧠 ANSWER ✔✔Pasteur was
comparing the ideas of spontaneous generation and cell theory against
each other. To do this, he first set up an experiment where he had a
straight neck flask filled with broth. He boiled all of the bacteria out of the
broth and left it to sit. After a couple of days, there were bacterial cells. He
then took a straight necked flask and bent it into a swan necked flask. He
, then performed the same experiment, boiling broth in both flasks and
leaving them. After a couple of weeks, the straight necked flask had
bacterial cells in it again, but the swan neck did not. Instead, the cells
clumped inside the bend in the neck.
It's important to test one variable at a time so that the experiment isn't
overwhelmed and you can keep track of each variable that you're testing.
What were the 2 claims made by Wallace and Darwin as they described
the process of evolution? - 🧠 ANSWER ✔✔All species are related by
common ancestry and characteristics of species can be modified from
generation to generation because of natural selection.
What are the 2 conditions required for natural selection to occur? Would a
trait that increases the lifespan of each individual in the population but
decreases overall fertility lead to greater or lesser fitness of the affected
individuals? - 🧠 ANSWER ✔✔Individuals must vary in characteristics that
are heritable and in a certain environment, certain versions of these traits
can help individuals reproduce more than other versions.
A trait that increases lifespans but decreases overall fertility would lead to
lesser fitness in the affected individuals.
COPYRIGHT©PROFFKERRYMARTIN 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE.
PRIVACY STATEMENT. ALL RIGHTS RESERVED
University 2025/2026 Exam Questions
with 100% Correct Answers | Latest
Update
What are the 5 fundamental traits of life? With these traits in mind, are
viruses alive? What evidence supports your conclusion? - 🧠 ANSWER ✔✔-
Energy Use and Metabolism
-Cell Theory
-Information, Genetics
-Replication or reproduction
-Biological Evolution
-No, viruses are not alive because they do not have cells.
How do hypotheses and theories differ? What do scientists mean by
"theory" and does this mean the same thing as "in theory" that non-
,scientists may say in conversation? Explain. - 🧠 ANSWER ✔✔A hypothesis
is a constructed idea before any applicable research has been done. A
theory is an idea supported by evidence.
When scientists say theory, they mean something that is true and
supported by evidence. When it is used in everyday conversations, it is
simply an idea that hasn't been proven, aka a hypothesis.
Write the Cell Theory in your own words. Did the Cell Theory challenge or
support the concept of spontaneous generation? Explain. - 🧠 ANSWER
✔✔Cell Theory: All cells come from pre-existing cells.
The Cell Theory challenged Spontaneous Generation and tested against it
through the Pasteur Flask Experiments.
Outline Pasteur's swan-necked flask experiment. What was the one
variable that differed between the test and experimental groups? Why is it
important to test one variable at a time? - 🧠 ANSWER ✔✔Pasteur was
comparing the ideas of spontaneous generation and cell theory against
each other. To do this, he first set up an experiment where he had a
straight neck flask filled with broth. He boiled all of the bacteria out of the
broth and left it to sit. After a couple of days, there were bacterial cells. He
then took a straight necked flask and bent it into a swan necked flask. He
, then performed the same experiment, boiling broth in both flasks and
leaving them. After a couple of weeks, the straight necked flask had
bacterial cells in it again, but the swan neck did not. Instead, the cells
clumped inside the bend in the neck.
It's important to test one variable at a time so that the experiment isn't
overwhelmed and you can keep track of each variable that you're testing.
What were the 2 claims made by Wallace and Darwin as they described
the process of evolution? - 🧠 ANSWER ✔✔All species are related by
common ancestry and characteristics of species can be modified from
generation to generation because of natural selection.
What are the 2 conditions required for natural selection to occur? Would a
trait that increases the lifespan of each individual in the population but
decreases overall fertility lead to greater or lesser fitness of the affected
individuals? - 🧠 ANSWER ✔✔Individuals must vary in characteristics that
are heritable and in a certain environment, certain versions of these traits
can help individuals reproduce more than other versions.
A trait that increases lifespans but decreases overall fertility would lead to
lesser fitness in the affected individuals.
COPYRIGHT©PROFFKERRYMARTIN 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE.
PRIVACY STATEMENT. ALL RIGHTS RESERVED
