Which is the simplest of all levels of organization?
A. atom
B. cell
C. organ
D. organism
E. population
Answer: A
Biology & Microbiology
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The nucleus of an atom is composed of
A. protons. B. neutrons. C. electrons. D. protons and neutrons. E. protons and electrons.
Biology & Microbiology
A device in which mass cultures are grown, reactions take place, and product develops is a(n) ________.
A. sparger B. activator C. incubator D. fermentor
Biology & Microbiology
Which of these structures is analogous in function to the alveoli of humans?
A) Parabronchi of a bird B) Spiracles of a grasshopper C) Trachea of a frog D) Operculum of a fish E) Skin of an alligator
Biology & Microbiology
The catabolite repression system in E. coli essentially represses the lac operon when glucose is present. What evolutionary advantage would favor evolution of such a system?
What will be an ideal response?
Biology & Microbiology