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JMU Bio 140 Exam 1 Questions And 100%
Correct Answers Graded A+
What is the first law of thermodynamics?
energy can neither be created nor destroyed; it can only be
transformed from one form to another
What is the second law of thermodynamics?
the degree of disorder in the universe tends to increase
The amount of disorder in a system is the ________ of the system
entropy
Who completed the experiment with rotting meat?
Francesco Redi
What did Francesco Redi's experiment prove?
living things only come from other living things
What was the hypothesis which Louis Pasture tested?
that microorganisms can arise by spontaneous generation
What did Louis Pasture's experiment prove?
that microbes carried on airborne dust particles is necessary for
microbial growth
Define plasma membrane
separates the living material within the cell from the nonliving
environment around it
What is the main difference between Eukaryotes and Prokaryotes?
prokaryotes do not have a nucleus
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What are the two sources by which organisms acquire energy?
sun and chemical compounds
Define metabolism
chemical reactions by which cells convert energy from one form to
another and build and breakdown molcules
Define ATP
stored energy in a chemical form
How does a virus spread?
hijacks a cell
Define natural selection
the process whereby organisms better adapt to their environment tend
to survive and produce more offspring
Define environmental variation
different environments have an effect on the organism
Define genetic variation
difference in genetic material that is transmitted from parents to
offspring
Define ecology
the study of how organisms interact with one another and with their
physical environment in nature
Elements are made up of _______ type(s) of atom(s)
one
Atoms are made up of what?
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-protons
-neutrons
-electron
Atoms' nucleus is made of what?
protons and neutrons
What is the charge of protons?
positive
What is the charge of a neutron?
neutral
What is the charge of a electron?
Negative
What are the steps in the scientific method?
-exploration and discovery
-testing ideas
-community analysis and feedback
-benefits and outcomes
Define Theory
A well-substantiated explanation of some aspect of the natural world,
based on a body of gives that have been repeatedly confirmed
What is an ion?
A charged atom
Loss of an electron is a
cation
JMU Bio 140 Exam 1 Questions And 100%
Correct Answers Graded A+
What is the first law of thermodynamics?
energy can neither be created nor destroyed; it can only be
transformed from one form to another
What is the second law of thermodynamics?
the degree of disorder in the universe tends to increase
The amount of disorder in a system is the ________ of the system
entropy
Who completed the experiment with rotting meat?
Francesco Redi
What did Francesco Redi's experiment prove?
living things only come from other living things
What was the hypothesis which Louis Pasture tested?
that microorganisms can arise by spontaneous generation
What did Louis Pasture's experiment prove?
that microbes carried on airborne dust particles is necessary for
microbial growth
Define plasma membrane
separates the living material within the cell from the nonliving
environment around it
What is the main difference between Eukaryotes and Prokaryotes?
prokaryotes do not have a nucleus
,!@#$%^&*&^%$#@#$%^&*(*&^%$#@$%^&*&^
What are the two sources by which organisms acquire energy?
sun and chemical compounds
Define metabolism
chemical reactions by which cells convert energy from one form to
another and build and breakdown molcules
Define ATP
stored energy in a chemical form
How does a virus spread?
hijacks a cell
Define natural selection
the process whereby organisms better adapt to their environment tend
to survive and produce more offspring
Define environmental variation
different environments have an effect on the organism
Define genetic variation
difference in genetic material that is transmitted from parents to
offspring
Define ecology
the study of how organisms interact with one another and with their
physical environment in nature
Elements are made up of _______ type(s) of atom(s)
one
Atoms are made up of what?
, !@#$%^&*&^%$#@#$%^&*(*&^%$#@$%^&*&^
-protons
-neutrons
-electron
Atoms' nucleus is made of what?
protons and neutrons
What is the charge of protons?
positive
What is the charge of a neutron?
neutral
What is the charge of a electron?
Negative
What are the steps in the scientific method?
-exploration and discovery
-testing ideas
-community analysis and feedback
-benefits and outcomes
Define Theory
A well-substantiated explanation of some aspect of the natural world,
based on a body of gives that have been repeatedly confirmed
What is an ion?
A charged atom
Loss of an electron is a
cation
