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BIO SCI 94 Study Guide - Comprehensive Final Guide: Hadley Cell, Kilogram, Intraspecific Competition

by

Department
Biological Sciences
Course Code
BIO SCI 94
Professor
Robin Bush
Study Guide
Final

Page:
of 39
UC-Irvine
BIO SCI 94
FINAL EXAM
STUDY GUIDE
Wk. 01-02
Explain what a theory is. How is a theory different from a hypothesis? Give an
example of both.
A theory is an explanation of observations supported by evidence. A hypothesis is
simply an educated guess. They are different because a hypothesis is tested and can
only be disproven. An example of a theory is the theory of evolution. A hypothesis
could be something that is tested, such as hyperactivity is not related to the intake of
sugar.
Describe Louis Pasteur’s experimental setup on the origin of cells. How do the
results relate to cell theory?
Pasteur had set up two experiments, one with a straight-necked flask filled with a
nutrient broth and another with a swan-necked flask also filled. He did this to test if
cells are created spontaneously or if they arise from other cells. The straight-necked
flask had cells appear in the broth while cells only remained in the neck of the other
flask. The conclusion was that cells had come from preexisting cells, not
spontaneously.
Define these terms in regards to biology:
Evolution – The theory that all organisms are related by common ancestry and
they have changed over time by natural selection.
Natural selection – Process where individuals with certain heritable traits
produce more surviving offspring than other individuals without the trait.
Heritable – Traits that can be sent down to offspring.
Population – A group of individuals of the same species living in the same
geographical location.
Fitness – The ability of an individual to produce more surviving offspring than
other individuals of the same species.
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