Which of the following statements about viruses is FALSE?
A) Viruses contain DNA or RNA but never both.
B) Viruses contain a protein coat.
C) Viruses use the anabolic machinery of the cell.
D) Viruses use their own catabolic enzymes.
E) Viruses have genes.
D
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When I say a flower is "purple," what have I described?
A. Its genotype B. Its karyotype C. Its haplotype D. Its phenotype
Movement of oxygen and carbon dioxide between alveoli and blood occurs by what process?
A) osmosis B) simple diffusion C) facilitated diffusion D) primary active transport E) secondary active transport
which layer is responsible for movement of food by parastalsis
What will be an ideal response?
A species of caterpillar develops toxic spikes that deter the birds that prey on it. Over time, the genetics of the bird population shifts so that an allele for a digestive enzyme that neutralizes the toxin becomes more common
This is an example of A) mutualism. B) an invasive species. C) parasitism. D) coevolution. E) mimicry.