The study of interactions between microbes and their environment and how those interactions affect the earth is called ________.
A. microbial ecology
B. applied microbiology
C. bioengineering
D. biotechnology
E. industrial microbiology
Answer: A
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Ribosomes are made up of:
A. only RNA molecules. B. only DNA molecules. C. DNA and RNA. D. protein and RNA. E. only protein molecules.
The contraction of skeletal muscles is based on _____
A) myosin filaments coiling up to become shorter B) actin and myosin filaments both coiling up to become shorter C) actin cross-bridges binding to myosin and transitioning from a high-energy to a low-energy state D) myosin cross-bridges binding to actin and transitioning from a high-energy to a low-energy state
The tracheal system of an insect is most like which of the following?
A) the exhaust system of an automobile B) the electrical wiring in a home C) the air duct system in a building D) leaves on a tree
The following products diffuse into the lacteal
A) amino acids B) monosaccharides C) ions D) triglycerides