A subculture is a a. colony growing beneath the media surface b. culture made from a contaminant c. culture made in an embryo d. culture made from an isolated colony

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

an agent that is bacteriostatic: a. kills algae b. kills bacteria c. inhibits the growth of fungi d. inhibits the growth of bacteria

Define the following terms that are commonly used describe colonies: 1.  Form -  2.  Elevation -  3.  Margin -

Bacillus subtilis and Bacillus cereus most likely showed greater resistance to UV light than Serratia marcescens. This is due to: a. Bacillus spp. are Gram-positive, while Serratia marcescens is Gram-negative b. the Bacillus spp. are spore fonners c. the pigment of Serratia marcescens absorbs more radiation than other cells d. Bacillus spp. have enzymes that protect them from ozone

2. a. explain 5 methods of nutrient uptake by cells b. explain the problems that may arise in the process of media sterilization using heat

What is the proper term for an organism whose optimum growth range is between 20 and 50C but can grow well at refrigerator temperatures? a. psychrophile b. psychrotroph c. hypophiles d. psychrobot

6. Account for the fact that the C. sporogenes culture showed a separation within the medium or an elevation of the medium from the bottom of the test tube.

What type of bacterial cell is being depicted in this image? 10μm a. Gram positive b. Gram negative c. Mix of both d. These are not bacterial cells

1. how does colony appearance and location with respect to the agar differ on the spread and pour plate? 2. list two additional factors that contribute to error in the spread plate method: