The human medulla is actually quite variable, ranging from continuous to completely absent.

a. true
b. false


Ans: a. true

Biology & Microbiology

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DNA contains two identical polynucleotide chains

a. True b. False Indicate whether the statement is true or false

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Aflatoxins are planar, ringed compounds that interact with DNA by ________ and cause frameshift mutations.

A. rearrangement B. deletion C. substitution D. intercalation

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Salt marshes differ from estuaries in that the freshwater input in salt marshes is from a single source.

Answer the following statement true (T) or false (F)

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Which of the following symptoms of trichinosis is most indicative of this disease?

A. Shortness of breath B. Eosinophilia C. Puffiness around the eyes D. Abdominal pain

Biology & Microbiology