One way in which an archaean would differ from a bacterium is that the archaean would possess no:
A) DNA in its chromosome.
B) peptidoglycan in its cell walls.
C) ribosomes in its cytoplasm.
D) RNA in its ribosomes.
B) peptidoglycan in its cell walls.
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Which one of the following diseases is caused by the reactivation of a latent virus?
a) Smallpox b) Shingles c) Rubella d) Roseola
A cross of two Kerry horses always produces Kerry. A cross of a Kerry with a Dexter produces 1/2
and 1/2. Crosses of two Dexters produce two Dexters for every Kerry. Explain. What will be an ideal response?
Which of the following is an example of a connective tissue?
A) the surface of the skin B) nerves C) blood D) cuboidal epithelium E) smooth muscles
Many introduced species have had deleterious
effects on communities and ecosystems because
a. coevolved parasites and pathogens are absent. b. the introduced species are long-lived. c. predators prefer the introduced species, and the local prey therefore proliferate to dangerously high levels. d. the community from which they came lost an important predator, competitor, or parasite. e. human beings do not know how to appreciate them