MICROBIOLOGY FINAL STRAIGHTERLINE, FINAL EXAM STRAIGHTERLINE MICROBIOLOGY EXAM | QUESTIONS & ANSWERS (VERIFIED) | LATEST UPDATE | GRADED A+

The study of evolutionary relationships among organisms is called ______. Correct Answer: phylogeny The three cell types discussed, eukaryotes, archaea, and bacteria, all derived from ______. Correct Answer: Last Universal Common Ancestor Organisms called parasites are ______. Correct Answer: always harmful to their host Which of the following does not indicate microbe involvement in energy and nutrient flow? Correct Answer: Thermal hot springs warmed by heat from earth's interior 2 The subatomic particles that surround the nucleus are the ______. Correct Answer: Electrons The number one worldwide infectious diseases are ______. Correct Answer: respiratory disease A fat is called _____ if all carbons of the fatty acid chain are single-bonded to 2 other carbons and 2 hydrogens. Correct Answer: saturated One technique for staining bacteria for viewing under the microscope is called the Gram stain. In this technique, alcohol is used as a decolorizer because it degrades the outer membrane found in some bacteria. What chemical component of the cell does alcohol affect? Correct Answer: lipid If a microbiologist is studying a specimen at a total magnification of 950X, what is the magnifying power of the objective lens if the ocular lens is 10X? Correct Answer: 95X NASA has published a list of criteria for identifying fossil bacteria in samples from Mars, as part of a search for evidence of life. Which of the following is good evidence for the presence of bacterial cells