Recently a class of infectious proteins with no associated nucleic acid have been identified. They are referred to as
A. virions.
B. prions.
C. viroids.
D. latent viruses.
E. bacteriophages.
Answer: B
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In the biosynthesis of nucleotides, pyrimidines are assembled starting with ribose-5-phosphate while ribose-5-phosphate is added after synthesis of the nitrogenous base for purines.
Answer the following statement true (T) or false (F)
The proper order of predator-prey relationships is
a. herbivore-producer-carnivore. b. carnivore-producer-herbivore. c. herbivore-carnivore-producer. d. producer-herbivore-carnivore. e. carnivore-herbivore-producer.
An interaction between two species in which
both species benefit is a. mutualism. b. parasitism. c. commensalism. d. competition. e. predation.
Monosomy for autosomes is lethal in humans. If an aborted male fetus had monosomy for
chromosome 6, how would you designate (write) the karyotype? ____________________ Fill in the blank(s) with the appropriate word(s).