An infectious circular piece of RNA that can infect plants is called a ________.
A. virus
B. prion
C. viroid
D. capsid
Answer: C
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Who is most noted for being a Greek naturalist who proposed the function of gills in fish?
a. Plato b. Aristotle c. Pliny the Elder d. Sophocles
Which of the following chemicals is used to
induce polyploidy?
a. colchicine b. ethylene c. gibberellin d. cytokinin e. auxin
Most of the dry weight of a microbial cell is from ________.
A. water B. organic compounds C. salts D. minerals E. inorganic compounds
Neurospora is an ideal organism to study the effects of genetic mutations because of several reasons. What is one of
these? a. Neurospora is a small mammal. b. Neurospora grows as a diploid organism. c. Neurospora requires a medium supplemented with only a few nutrients that it cannot manufacture on its own. d. Neurospora mutant strains that cannot make a particular amino acid can still grow if that amino acid is added to the growth medium. e. Neurospora contains homologous chromosomes that are easily viewed with a light microscope