What is the greatest risk factor for cancer?

a. family history
b. age
c. environmental toxins
d. diet

e. physical inactivity


b

Biology & Microbiology

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Coevolution is:

A. the evolution of coenzymes B. two species reciprocally influencing each other's evolution C. random evolution not influenced by natural selection D. evolution of secondary metabolites according to fixed ratios E. coordinated evolution of sensory and motor pathways

Biology & Microbiology

Eukaryotes are ________ prokaryotes

A) more ancient than B) dependent upon C) more widespread than D) more numerous than

Biology & Microbiology

Animals use auricular muscles to swivel their ears to home in on sounds. Humans have auricular muscles but we can't turn our ears. So why do humans have auricular muscles?

A) They are needed in the development of the human embryo but not in the adult. B) They are still needed to help us swallow and retract our tongue. C) They are vestigial structures we inherited from mammalian ancestors D) People who can wiggle their ears due to auricular muscles have a reproductive advantage.

Biology & Microbiology

Compare and contrast defined media and complex media. Use specific examples in your

What will be an ideal response?

Biology & Microbiology