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1. match each animal body system with its function main- cardiovascular: distributes
taining homeostasis nutrients and oxygen to
cells
digestive: takes in nutri-
ents
endocrine: coordinates
functions of other sys-
tems
respiratory: exchanges
gases with the environ-
ment
urinary: excretes metabol-
ic wastes
2. select all explanations for why mutations in gene se- - mutations may result in
quences are important in biology an organism being better
suited to its environment
than other individuals
- mutations are the basis
for evolutionary change
3. since all organisms share the same characteristics of true
life, they share a common evolutionary ancestor in
which these characteristics had appeared (t/f)
4. the possibility that experimental results are due to probability value
chance, or some factor other than the experimental
variable, is measured by the_______.
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, Human Biology Ch. 1
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5. what was the conclusion of Dr. Marshall's stomach ul- the use of antibiotics elim-
cer study? inated H. pylori stomach
ulcers in patients
6. the factor being tested during an experiment is the variable
experimental ________.
7. what classifies organisms as the same species? the ability to interbreed
8. according to Koch's postulates, once Barry Marshall isolate the bacteria by cul-
had identified Helicobacter pylori infection in patients turing in the lab
with ulcers, the next step to proving the link between
the two was _______.
9. in order to successfully reproduce infection by H. py- himself and another hu-
lori, Marshall used ______. man volunteer
10. which of the following contains all the Earth's ecosys- biosphere
tems?
11. Dr. Barry Marshall and Dr. Robin Warren hypothesized a bacterial infection
that stomach ulcers were caused by _______.
12. select all that apply - living organisms
the science of biology is the study of _________. - the environments in
which organisms live
13. which characteristic is NOT found in all forms of life? the ability to move
14. the smallest structural and functional unit of all living cell
things is called a(n)_______.
15. multicellular
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