JMU BIO 140 EXAM 1 ACTUAL TEST PAPER 2026
QUESTIONS WITH SOLUTIONS GRADED A+
◉ Define Theory. Answer: A well-substantiated explanation of some
aspect of the natural world, based on a body of gives that have been
repeatedly confirmed
◉ The earth's crust consist mainly of what elements. Answer:
oxygen and silicon
◉ The human body consist mainly of what elements? Answer:
oxygen, carbon, and hydrogen
◉ Are viruses made of cells?. Answer: no
◉ What is the central dogma?. Answer: DNA -> RNA -> Protein
◉ When simple compounds are combined into more complex
molecules, the entropy inside the cell __________.. Answer: decreases
◉ When energy is released as heat, what happens to the entropy?.
Answer: the entropy increases
,◉ Humans and chimpanzees share _______% of our DNA.. Answer:
98.8
◉ What do nodes do?. Answer: indicate a common ancestor
◉ What makes a good hypothesis?. Answer: a prediction about
observations not yet made and can be tested by experiment or
further observation
◉ What are the characteristics of life?. Answer: -complexity
-ability to change in response to the environment
-ability to reproduce
-capacity to evolve
◉ What two elements make up 99% of matter?. Answer: hydrogen
and helium
◉ 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
QUESTIONS WITH SOLUTIONS GRADED A+
◉ Define Theory. Answer: A well-substantiated explanation of some
aspect of the natural world, based on a body of gives that have been
repeatedly confirmed
◉ The earth's crust consist mainly of what elements. Answer:
oxygen and silicon
◉ The human body consist mainly of what elements? Answer:
oxygen, carbon, and hydrogen
◉ Are viruses made of cells?. Answer: no
◉ What is the central dogma?. Answer: DNA -> RNA -> Protein
◉ When simple compounds are combined into more complex
molecules, the entropy inside the cell __________.. Answer: decreases
◉ When energy is released as heat, what happens to the entropy?.
Answer: the entropy increases
,◉ Humans and chimpanzees share _______% of our DNA.. Answer:
98.8
◉ What do nodes do?. Answer: indicate a common ancestor
◉ What makes a good hypothesis?. Answer: a prediction about
observations not yet made and can be tested by experiment or
further observation
◉ What are the characteristics of life?. Answer: -complexity
-ability to change in response to the environment
-ability to reproduce
-capacity to evolve
◉ What two elements make up 99% of matter?. Answer: hydrogen
and helium
◉ 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
