bio 180 exam 1 Q & As (Verified
Answers) 2026
What is the difference between a theory and a hypothesis? -
Correct Answers ✅Only scale--theories deal with "big
ideas" that impact large parts of the physical or natural
world; hypotheses are more focused or narrower in scope.
What is the difference between a hypothesis and a
prediction? - Correct Answers ✅A hypothesis is an idea--a
testable explanation; a prediction is something that follows
from a hypothesis and that you can measure
Which of the following is a prediction based on the cell theory
that all organisms are made of cells, and all cells come from
preexisting cells? - Correct Answers ✅If you boil nutrient
broth and place it in an air-tight flask, no cells will appear in
the broth
What was important about the experimental design for
Pasteur's flask experiment? - Correct Answers ✅He
compared results from two experimental setups which
differed only in the type of flask in which the nutrient broth
was placed
How do biologists test their ideas about the natural world? -
Correct Answers ✅Scientists make predictions based on
hypotheses they have developed, and then design
experiments or other types of studies to test those
predictions.
, bio 180 exam 1 Q & As (Verified
Answers) 2026
Why is it important to perform multiple trials in an
experiment -- meaning that you include many test individuals
or samples? - Correct Answers ✅To make it more likely that
the results are not due to a few unusual individuals or
circumstances
What does the p in "p-value" represent? - Correct Answers
✅Probability (of getting the observed result, just by chance)
Suppose we run a statistical test, and learn that p = 0.01.
What does this mean? - Correct Answers ✅There is a 1 in
100 chance of observing a difference between treatment
groups this extreme if the null hypothesis is correct.
If we want to plot the distribution of scores on Exam 1, we
should use a... - Correct Answers ✅Histogram
If we want to plot the exam scores of 1st-year students
versus 2nd-year students, we would use a ... - Correct
Answers ✅Bar chart
If we want to compare the scores of 1st-year and 2nd-year
students using a statistical test, our null hypothesis will be... -
Correct Answers ✅There is no difference in exam
performance between students in year 1 and 2.
Answers) 2026
What is the difference between a theory and a hypothesis? -
Correct Answers ✅Only scale--theories deal with "big
ideas" that impact large parts of the physical or natural
world; hypotheses are more focused or narrower in scope.
What is the difference between a hypothesis and a
prediction? - Correct Answers ✅A hypothesis is an idea--a
testable explanation; a prediction is something that follows
from a hypothesis and that you can measure
Which of the following is a prediction based on the cell theory
that all organisms are made of cells, and all cells come from
preexisting cells? - Correct Answers ✅If you boil nutrient
broth and place it in an air-tight flask, no cells will appear in
the broth
What was important about the experimental design for
Pasteur's flask experiment? - Correct Answers ✅He
compared results from two experimental setups which
differed only in the type of flask in which the nutrient broth
was placed
How do biologists test their ideas about the natural world? -
Correct Answers ✅Scientists make predictions based on
hypotheses they have developed, and then design
experiments or other types of studies to test those
predictions.
, bio 180 exam 1 Q & As (Verified
Answers) 2026
Why is it important to perform multiple trials in an
experiment -- meaning that you include many test individuals
or samples? - Correct Answers ✅To make it more likely that
the results are not due to a few unusual individuals or
circumstances
What does the p in "p-value" represent? - Correct Answers
✅Probability (of getting the observed result, just by chance)
Suppose we run a statistical test, and learn that p = 0.01.
What does this mean? - Correct Answers ✅There is a 1 in
100 chance of observing a difference between treatment
groups this extreme if the null hypothesis is correct.
If we want to plot the distribution of scores on Exam 1, we
should use a... - Correct Answers ✅Histogram
If we want to plot the exam scores of 1st-year students
versus 2nd-year students, we would use a ... - Correct
Answers ✅Bar chart
If we want to compare the scores of 1st-year and 2nd-year
students using a statistical test, our null hypothesis will be... -
Correct Answers ✅There is no difference in exam
performance between students in year 1 and 2.
