Fit to 3. A group of students wants to study the effects of temperature on bacterial growth. To get bacteria, they leave petri dishes of nutrient agar open on a shelf. They then put the dishes in different places: an incubator (37 degrees C) a lab room (21 degrees C), a refrigerator (10 degrees C) and a freezer (0 degrees C). Bacterial growth is measured by estimating the percentage of each dish covered by the bacteria at the end of a three day growth period. a) What is the independent variable? b) What is the dependent variable? c) List two (or more) ways to improve this experimental design.

Fit to 3. A group of students wants to study the effects of temperature on bacterial growth. To get bacteria, they leave petri dishes of nutrient agar open on a shelf. They then put the dishes in different places: an incubator (37 degrees C) a lab room (21 degrees C), a refrigerator (10 degrees C) and a freezer (0 degrees C). Bacterial growth is measured by estimating the percentage of each dish covered by the bacteria at the end of a three day growth period. a) What is the independent variable? b) What is the dependent variable? c) List two (or more) ways to improve this experimental design.

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

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TRUE or FALSE only! 1. We need to look at the body tube’s side when focusing to prevent the breakage of the microscope glass slide. 2. In transferring samples of bacteria from one medium to another growth medium a sterilized inoculating loop is used. 3. In drying leaf samples for a thesis experiment, the proper laboratory instrument to be used is the autoclave.
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MICROBE PROFILING Instructions: Choose any microorganism from the different groups of cellular and acellular and fill in the information required for your chosen microbe for profiling. 1. Scientific Name and common name of the microbe: 2. Importance: 3. Cellular or Acellular? 4. If cellular, eukaryote or Prokaryote? 5. If cellular, which Kingdom? 6. General Morphology (describe cell types, parts of cells, size, etc.): 7. Where are they commonly found? 8. Source of nutrition: 10. Does it cause human infection? (Yes or No); What disease? 11. If they cause diseases, how can we prevent the infection? 12. Representative photo 13. References:
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