Microbiology

Learn the toughest concepts covered in Microbiology with step-by-step video tutorials and practice problems by world-class tutors.

1. Introduction to Microbiology

Scientific Method

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concept

Scientific Method

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6m
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concept

Predictions, Hypotheses, & Theories

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8m
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Scientific Method Example 1

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Problem

Which of the following shows the best order of steps of the scientific method?

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Problem

A scientist observes that even after sterilizing a broth, cells reappear in the broth over time. The scientist then asks:“Why do cells reappear in the broth after sterilization?” and designs/conducts an experiment. Considering this, appropriately label each of the following blanks as either a “prediction, hypothesis or theory.”

________________:Cells will only appear in the broth exposed to a source of preexisting cells.

________________:Cells appear only when preexisting cells grow & divide; therefore, cells only appear in exposed broths.

________________:All organisms consist of cells & all cells come from preexisting cells.

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concept

Basic Theories of Biology

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Problem

Which of the following statements about the cell theory is false?