You need to determine if a pure culture of bacteria is Gram-positive or Gram-negative, but you've just spilled your only solution of crystal violet so you can't do a Gram stain. You decide to try a lysozyme treatment on a sample of each culture and then examine the samples under the microscope. The expected result is:. A. Gram-positives will be unaffected; Gram-negatives will lyse and appear as debris.
B. Gram-positives will be unaffected: Gram-negatives will lose their flagella
C. Gram-positives will lyse and appears as debris: Gram-negatives would also lyse and appear as debris.
D. Gram-positives will lyse and appears as debris: Gram-negatives would have a weakened cell envelope but not lyse.

This class has taught you that the use of science and medicine in practical ways has become an international endeavor. one of the greatest examples of an international science accomplishment is which allows the profiling of human dna, useful not only to science but also medicine. a) forensic science b) the fbi c) the human genome project d) bioterrorism

Which statements best describe the differences or similarities between a comparative investigation and an experimental investigation? check all that apply. experimental investigations are best for showing cause-and-effect relationships, while comparative investigations do not necessarily show this type of relationship. comparative investigations are often impractical and unrealistic, while experimental investigations are the most practical and realistic kinds of investigations. comparative investigations allow for the use of a wide range of variables but do not have a control group, while experimental investigations involve variables that can be controlled. both experimental investigations and comparative investigations are designed to answer scientific questions. both experimental investigations and comparative investigations focus on making observations rather than collecting new data.

What is usually (but not always) related to the metabolic processes of living organisms in its organic form?