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Chapter 1: Questions
Chapter 1 (Biology and the tree of life) of Biological Science fourth edition
20
Biology
Undergraduate 1
09/22/2011

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Term
What are the five fundamental characteristics of life?
Definition
Energy, cells, Information, Replication, Evolution
Term
What was the theory that came before the cell theory?
Definition
spontaneous generation
Term
Who performed the experiment to disprove spontaneous generation and to support the all-cells-from -cells hypothesis?
Definition
Louis Pasteur
Term
In order for natural selection to occur, what two conditions must be met?
Definition
The trait must be heritable and the trait must help the individual survive and reproduce (pass on their genetic information)
Term
All species are related by _______ _________ and have changed over time as in response to _________ __________.
Definition
common ancestry; natural selection
Term
How can you tell if two organisms are closely related to one another?
Definition
by looking at the rRNA sequences
Term
What are the three fundamental lineages of organisms?
Definition
bacteria, archae, and Eukarya
Term
Who came up with the two part naming system of organisms that we use today?
Definition
Carolus Linnaeus
Term
Can a hypothesis ever be proven true?
Definition
No, it can only be supported or disproved
Term
How many factors can scientists test at once in an experiment?
Definition
One
Term
A good scientific theory must make predictions that are_________.
Definition
testable
Term
What are several characteristics of a good experimental design?
Definition
A control group, unchanging conditions, repeatability, etc.
Term
Pasteur's results showed that _____.
Definition
when growth medium is not contaminated by preexisting cells, the growth medium remains sterile
Term
Natural selection acts only on traits that are _____.
Definition
heritable
Term
What is the relationship between Bacteria, Archaea, and Eukarya?
Definition
These groups are descendants of a single common ancestor cell
Term
The role of controls in scientific experiments is to _____,
Definition
test for factors other than the one being investigated that might influence the outcome of the experiment
Term
What domains include prokaryotes?
Definition
Archae and bacteria
Term
Taxonomy attempts to describe the _______, or historical relationships, among organisms.
Definition
phylogeny
Term
A null hypothesis in an experiment is _____.
Definition
an alternative possibility in the event that the explanation being tested does not apply
Term
In order for an experiment to be effective there should be ____ difference(es) between the experimental groups
Definition
only one
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