Eustachian tube connects the middle ear and which of the following?


Answer: Nasopharynx

Biology & Microbiology

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Which of the following statements is true?

a) Genetic engineering offers no benefits to farmers. b) A genetically modified organism (GMO) is one that has lost one or more genes naturally. c) Scientist have been able to successfully produce medicines by genetic engineering.

Biology & Microbiology

Poliovirus is ingested and gains access to tissues by which portal of entry?

a. Skin b. Parenteral c. Mucous membranes d. All of these e. None of these

Biology & Microbiology

If a scientist found very high concentrations of organic biomarkers deep inside a 3.9 billion year old meteorite, how would this effect the explanation of the origins of life on Earth?  

A.  This would prove the extra-terrestrial origin of life. B.  This would provide evidence for the extra-terrestrial origin of life. C.  This would disprove the terrestrial origin of life. D.  This would provide evidence for the uniqueness of life on earth. Clarify Question · What is the key concept addressed by the question? · What type of thinking is required?   Gather Content · What do you already know about the role of meteorites in the origin of life?   Choose Answer · Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer?   Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?

Biology & Microbiology

The genes you inherited from your parents are an example of 

A. speciation. B. evolution. C. adaptive radiation. D. gene flow.

Biology & Microbiology