UF MCB3020 Exam 1 – Asghari Questions with answers

UF MCB3020 Exam 1 – Asghari Questions with answers Microbes -Correct Answer-Photosynthetic microbes changed the Earths atmosphere by releasing oxygen as a byproduct of photosynthesis. Valuable ecosystem services and maintain livability of the Earth. Organism that cannot be seen by the naked eye. NOT ALL MICROBES CAUSE DISEASES! Antimicrobial Agents -Correct Answer-Chemicals that kill bacteria; naturally produced by bacteria and fungi as defense mechanisms Chemotherapeutics -Correct Answer-General category of chemicals that protect against diseases Microbiology -Correct Answer-branch of biology that deals with microbes Infectious diseases -Correct Answer-When microbes grow and multiply after entering the body 1900 top causes of death: -Correct Answer-Tuberculosis, pneumonia, diarrhea, enteritis Top causes of death today: -Correct Answer-Heart Disease, Cancer, Stroke Why a decrease in the role of infectious diseases? -Correct Answer-Dr. Asghari attributes this decrease to the discovery of antibiotics, vaccines, & greater attention to sanitation. (U.S. Department of Health recognized the role of dirty water in spreading infectious diseases.- Recommended chlorination of drinking water to rid it of microbes.) Aristotle -Correct Answer-Spontaneous Generation: living things could spontaneously arise from non-living things. Louis Pasteur (The Father of Microbiology) -Correct Answer-Disproved spontaneous generation with the swan neck flask experiment. (Germ Theory of Disease). Also known for his work on pasteurization (for eliminating unwanted organisms in wine), working with vaccines for rabies, and perfected fermentation showing that yeast can turn sugar to ethanol. Robert Hooke -Correct Answer-Coined the term "cell". All organisms are made of cells. Antony Van Leeuwenhoek -Correct Answer-Discovered the first microscope, first to visualize microbes. Edward Jenner -Correct Answer-Developed first vaccine (smallpox vaccine). He noticed that milkmaids almost never got the disease and hypothesized that it was because they were already exposed to a similar diseases( cowpox), allowing them to develop immunity. Tested t