Normal biota can benefit the human host by making a majority of the nutrients needed in human metabolism

a. true
b. false


b. false

Biology & Microbiology

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Why are statistics an important tool in scientific research?

What will be an ideal response?

Biology & Microbiology

A _____ crack radiates outward, away from the load point.

What will be an ideal response?

Biology & Microbiology

You discover that the underlying cause of a disease is a protein that is now less stable than the non-disease-causing version of the protein. This change is most likely to be due to ________

(a) a mutation within a gene. (b) a mutation within the regulatory DNA of a gene. (c) gene duplication. (d) horizontal gene transfer.

Biology & Microbiology

Organelles are __________

A. structures that contain the genetic material. B. membrane-bound compartments of eukaryotic cells. C. the region that contains the DNA in prokaryotic cells. D. the outer, rigid covering of a prokaryotic cell.

Biology & Microbiology