Which early naturalist is known for describing nature as a continuum of organization?
a. Darwin
b. Plato
c. Mendel
d. Galileo
e. Aristotle
ANSWER: e
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The number of allele pairs that assort independently in an organism is generally much higher than the number of chromosome pairs. This phenomenon is due to
A. independent assortment. B. segregation. C. crossing over. D. sex-linkage. E. chromosome inactivation.
What does it mean that cells are open systems?
a. They take out energy and matter and maintain ordered state. b. They bring in energy and matter and maintain disordered state. c. They take out energy and matter and maintain ordered state. d. They bring in energy and matter and maintain ordered state.
In a phenomenon known as satelliting, tiny colonies of Haemophilus spp. may be observed growing on sheep blood agar close to colonies of bacteria that can produce:
a. hemin. b. NAD. c. vitamin K. d. cystine.
Which proteins form channels in the membrane that allow selected polar molecules and ions to pass through and
across the membrane?
a. transport proteins b. recognition proteins c. receptor proteins d. cell adhesion proteins e. nuclear proteins