Viruses defy characterization as living organisms even though they possess nucleic acids and proteins. The reason why viruses are not considered to be alive is because they
A. form spontaneously.material.
B. cannot form spontaneously.
C. cannot reproduce without a host cell.
D. lack genetic Viruses defy characterization as living organisms even though they possess nucleic acids and proteins. The reason why viruses are not considered to be alive is because they
C. cannot reproduce without a host cell.
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Mutation of the fru (fruitless) gene in fruit flies results in males attempting to mate with other males. This is an example of
A. imprinting. B. learned behavior. C. fixed action pattern. D. reflex. E. taxis.
A hypothetical restriction sequence is 5?-TCTAGA-3?. The palindromic sequence is 3?-________-5?
Fill in the blank(s) with correct word
Fires may result in:
a. decreased erosional rates. b. enrichment of the soil. c. decreased soil fertility. d. decreased evaporation from the soil surface. e. increased amounts of organic litter on the soil.
Historically, eukaryotic organisms that did NOT fit into other kingdoms were placed into which kingdom?
A. Protista B. Fungi C. Plantae D. Animalia