All of the following are valid measurements of growth except: A. Counting viable cells B. Estimating the weight of cells C. Determining the dry weight of cells D. Streaking for single colonies E. Measuring some cellular component F. Counting the total number of cells

Which of the following statement about normal flora is INCORRECT?   Question 3 options: A On Sabouraud's agar, yeast will appear as small creamy colonies and mold will have large fuzzy colonies B Alpha and gamma hemolysis is produced by Streptococcus species C Normal flora never cause disease D A healthy person can carry pathogens like MRSA and Proprionibacterium acnes on our skin E The growth of S. aureus turns the color of MSA to yellow

SPREAD PLATE See the follow up procedure for determining colony counts and express the number of colony forming units (CFU) in scientific notation. Record "TNTC" for plates with colonies that are too numerous to count. CFU/mL-Use scientific notation DILUTION 1:107 1:108 COLONY COUNT ...دما

Match the following growth phase terms to their definitions: Select the INCORRECT match. a. Stationaryphase/ The number of new cells produced equals number of cells dying b. Death phase/ Cells lose their ability to divide and die c. Lag phase/ Organisms are metabolically active but not increasing in cell number d. Log phase/ Organisms divide at an exponential rate with constant generation time e. Chemostat/ Continuous addition of fresh medium, which allows cultures to be maintained

Comparing the different methods for counting bacterial cells, which of the following is FALSE? A. The serial dilution methods counts only viable cells.  B. The turbidity method indirectly measures the number of cells observing how much light goes through a broth sample  C. The turbidity method uses a spectrophotometer  D. The direct microscopic method counts only viable cells  E. The direct microscopic method counts both viable and non-viable cells

Answer the following question and choose the correct option: Which phase has the specific growth rate condition u = 0? A) Delay phase B) Stationary phase C) Death phase

Make a chart of all the organisms (Columns) with results    a. Blood Agar Plate b. PEA Agar Plate c. Mac Conkey Agar Plate d. Mannitol Salt Agar Plate e. Nutrient Agar Plate

Complete the colony morphology for the colonies pictured above: 1.  Form - 2.  Elevation - 3.  Margin - 4.  Surface - 5.  Chromogenesis -

if a student conducts an experiment cultivating a cell. at the initial time the number of cells was measured with a spectrophotometer and yielded OD = 0.01 and after 20 hours the OD increased to OD = 0,15. calculate the growth rate and doubling time.