BIOLOGY 211 EXAM 1 - IOWA STATE UNIVERSITY
QUESTIONS & DETAILED CORRECT SOLUTIONS
RATED 100% CORRECT
1. What are the 5 fun-
-Energy Use and Metabolism
damental traits of
-Cell Theory
life?
With these traits in mind, -Information, Genetics
are viruses alive? -Replication or reproduction
What evidence -Biological Evolution
supports your -No, viruses are not alive because they do not have cells.
conclusion?
A hypothesis is a constructed idea before any applicable
2. How do hypotheses research has been done. A theory is an idea supported by
and theories differ? evidence.
What do scientists When scientists say theory, they mean something that is
mean by "the- ory"
true and supported by evidence. When it is used in everyday
and does this mean
conversations, it is simply an idea that hasn't been proven,
the same thing as
aka a hypothesis.
"in theory" that non-
scien- tists may say
in conver- sation?
Explain.
3. Write the Cell Cell Theory: All cells come from pre-existing cells.
Theory in your own The Cell Theory challenged Spontaneous Generation and tested
words. Did against
the Cell Theory challenge it through the Pasteur Flask Experiments.
or support the
concept of
spontaneous genera-
tion? Explain.
4. Outline Pasteur's ex- periment. What was the one
swan-necked flask variable that differed between the
,BIOLOGY 211 EXAM 1 - IOWA STATE UNIVERSITY
QUESTIONS & DETAILED CORRECT SOLUTIONS
RATED 100% CORRECT
test and Pasteur was comparing the ideas of spontaneous generation
experimental and cell theory against each other. To do this, he first set up
groups? Why is it
an experiment where he had a straight neck flask filled with
impor- tant to test
broth. He boiled all of the bacteria out of the broth and left it to
one variable at a
sit. After a couple of days, there were bacterial cells. He then took
time?
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.
,BIOLOGY 211 EXAM 1 - IOWA STATE UNIVERSITY
QUESTIONS & DETAILED CORRECT SOLUTIONS
RATED 100% CORRECT
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.
5. What were the 2 All species are related by common ancestry and
claims made by characteristics of species can be modified from generation to
Wallace and generation because of
Darwin as they described natural selection.
the process of evolution?
6. What are the 2 bred large-pod peas to oth- er large-
condi- tions required pod peas, would you expect the
for nat- ural average pod size to get smaller or
selection to occur? larger? Why? What is this process
Would a trait that in- called?
creases the lifespan
of each individual in
the population but
decreas- es overall
fertility lead to
greater or lesser
fitness of the
affected individu-
als?
7. What is the smallest
unit that can evolve?
Do indi- viduals
evolve?
8. If you continuously
, BIOLOGY 211 EXAM 1 - IOWA STATE UNIVERSITY
QUESTIONS & DETAILED CORRECT SOLUTIONS
RATED 100% CORRECT
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.
A population is the smallest unit that
can evolve. Individuals do not
evolve.
You would expect the average pod size
to get larger because it is a desirable
heritable trait due to natural
selection.
QUESTIONS & DETAILED CORRECT SOLUTIONS
RATED 100% CORRECT
1. What are the 5 fun-
-Energy Use and Metabolism
damental traits of
-Cell Theory
life?
With these traits in mind, -Information, Genetics
are viruses alive? -Replication or reproduction
What evidence -Biological Evolution
supports your -No, viruses are not alive because they do not have cells.
conclusion?
A hypothesis is a constructed idea before any applicable
2. How do hypotheses research has been done. A theory is an idea supported by
and theories differ? evidence.
What do scientists When scientists say theory, they mean something that is
mean by "the- ory"
true and supported by evidence. When it is used in everyday
and does this mean
conversations, it is simply an idea that hasn't been proven,
the same thing as
aka a hypothesis.
"in theory" that non-
scien- tists may say
in conver- sation?
Explain.
3. Write the Cell Cell Theory: All cells come from pre-existing cells.
Theory in your own The Cell Theory challenged Spontaneous Generation and tested
words. Did against
the Cell Theory challenge it through the Pasteur Flask Experiments.
or support the
concept of
spontaneous genera-
tion? Explain.
4. Outline Pasteur's ex- periment. What was the one
swan-necked flask variable that differed between the
,BIOLOGY 211 EXAM 1 - IOWA STATE UNIVERSITY
QUESTIONS & DETAILED CORRECT SOLUTIONS
RATED 100% CORRECT
test and Pasteur was comparing the ideas of spontaneous generation
experimental and cell theory against each other. To do this, he first set up
groups? Why is it
an experiment where he had a straight neck flask filled with
impor- tant to test
broth. He boiled all of the bacteria out of the broth and left it to
one variable at a
sit. After a couple of days, there were bacterial cells. He then took
time?
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.
,BIOLOGY 211 EXAM 1 - IOWA STATE UNIVERSITY
QUESTIONS & DETAILED CORRECT SOLUTIONS
RATED 100% CORRECT
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.
5. What were the 2 All species are related by common ancestry and
claims made by characteristics of species can be modified from generation to
Wallace and generation because of
Darwin as they described natural selection.
the process of evolution?
6. What are the 2 bred large-pod peas to oth- er large-
condi- tions required pod peas, would you expect the
for nat- ural average pod size to get smaller or
selection to occur? larger? Why? What is this process
Would a trait that in- called?
creases the lifespan
of each individual in
the population but
decreas- es overall
fertility lead to
greater or lesser
fitness of the
affected individu-
als?
7. What is the smallest
unit that can evolve?
Do indi- viduals
evolve?
8. If you continuously
, BIOLOGY 211 EXAM 1 - IOWA STATE UNIVERSITY
QUESTIONS & DETAILED CORRECT SOLUTIONS
RATED 100% CORRECT
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.
A population is the smallest unit that
can evolve. Individuals do not
evolve.
You would expect the average pod size
to get larger because it is a desirable
heritable trait due to natural
selection.
