DREXEL BIO 209 EXAM 1 QUESTION SET WITH
RATIONALES AND PROTEIN FUNCTION AND
STRUCTURE APPLICATIONS 2026
◉ What is the first law of thermodynamics?
Answer: energy can neither be created nor destroyed; it can only be
transformed from one form to another
◉ What is the second law of thermodynamics?
Answer: the degree of disorder in the universe tends to increase
◉ The amount of disorder in a system is the ________ of the system
Answer: entropy
◉ Who completed the experiment with rotting meat?
Answer: Francesco Redi
◉ What did Francesco Redi's experiment prove?
Answer: living things only come from other living things
◉ What was the hypothesis which Louis Pasture tested?
,Answer: that microorganisms can arise by spontaneous generation
◉ What did Louis Pasture's experiment prove?
Answer: that microbes carried on airborne dust particles is
necessary for microbial growth
◉ Define plasma membrane
Answer: separates the living material within the cell from the
nonliving environment around it
◉ What is the main difference between Eukaryotes and
Prokaryotes?
Answer: prokaryotes do not have a nucleus
◉ What are the two sources by which organisms acquire energy?
Answer: sun and chemical compounds
◉ Define metabolism
Answer: chemical reactions by which cells convert energy from one
form to another and build and breakdown molcules
◉ Define ATP
Answer: stored energy in a chemical form
, ◉ How does a virus spread?
Answer: hijacks a cell
◉ Define natural selection
Answer: the process whereby organisms better adapt to their
environment tend to survive and produce more offspring
◉ Define environmental variation
Answer: different environments have an effect on the organism
◉ Define genetic variation
Answer: difference in genetic material that is transmitted from
parents to offspring
◉ Define ecology
Answer: 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)
Answer: one
RATIONALES AND PROTEIN FUNCTION AND
STRUCTURE APPLICATIONS 2026
◉ What is the first law of thermodynamics?
Answer: energy can neither be created nor destroyed; it can only be
transformed from one form to another
◉ What is the second law of thermodynamics?
Answer: the degree of disorder in the universe tends to increase
◉ The amount of disorder in a system is the ________ of the system
Answer: entropy
◉ Who completed the experiment with rotting meat?
Answer: Francesco Redi
◉ What did Francesco Redi's experiment prove?
Answer: living things only come from other living things
◉ What was the hypothesis which Louis Pasture tested?
,Answer: that microorganisms can arise by spontaneous generation
◉ What did Louis Pasture's experiment prove?
Answer: that microbes carried on airborne dust particles is
necessary for microbial growth
◉ Define plasma membrane
Answer: separates the living material within the cell from the
nonliving environment around it
◉ What is the main difference between Eukaryotes and
Prokaryotes?
Answer: prokaryotes do not have a nucleus
◉ What are the two sources by which organisms acquire energy?
Answer: sun and chemical compounds
◉ Define metabolism
Answer: chemical reactions by which cells convert energy from one
form to another and build and breakdown molcules
◉ Define ATP
Answer: stored energy in a chemical form
, ◉ How does a virus spread?
Answer: hijacks a cell
◉ Define natural selection
Answer: the process whereby organisms better adapt to their
environment tend to survive and produce more offspring
◉ Define environmental variation
Answer: different environments have an effect on the organism
◉ Define genetic variation
Answer: difference in genetic material that is transmitted from
parents to offspring
◉ Define ecology
Answer: 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)
Answer: one
