A ____________ can contain DNA or RNA as its genetic material, but not both.
Fill in the blank(s) with the appropriate word(s).
virus
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Which of the following accurately describe(s) ectotherms compared to endotherms of similar size at similar body temperatures? (Select all correct choices.)
A. Ectotherm metabolic rates are about 25% those of endotherms. B. Ectotherms cannot sustain prolonged activity for as long as endotherms can. C. Ectotherms can survive much longer periods without food than can endotherms. D. Ectotherm metabolic rates decrease as body temperature increases. E. Ectotherms never reach activity levels of endotherms.
All breast cancers result from a recessively inherited gene that suppresses cell division. Indicate whether the statement is true or false
In the accompanying figure, which combination of letters accurately represents two homologous chromosomes?
a. A and B b. A and C c. A and D d. B and F e. D and E
Populations of two coexisting species are both tertiary consumers in a community. What relationship may exist between these two organisms?
A) predation B) mutualism C) competition D) succession