Ch. 6 - Microbial Growth
Ch. 7 - Metabolism
Ch. 9 - Controlling Microbial Growth
Ch. 10 - Antimicrobial Drugs
Grab Bag
100
The phase of bacterial growth where bacteria are easiest to kill with antibiotics
Exponential Growth Phase (Log Phase)
100
All bacteria sits at the bottom of the tube, which oxygen requirement does it have?
Obligate anaerobe
100
What percentage of alcohol is optimal for killing bacteria
70%
100
Chemicals that are naturally produced by a microorganism that inhabit or kill other microorganisms are called?
Antibiotics
100
Something that prevents further growth of bacteria is referred to as what? What about killing the bacteria?
Bacteriostatic, Bactericidal
200
This is what a bacterium is referred to when it requires oxygen to survive
Obligate aerobe
200
All bacteria sit at the very top of the tube, which oxygen requirement does it have?
Obligate aerobe
200
Heating liquids to kill harmful bacteria inside them is called
Pasteurization
200
Type of antibiotic that can only kill a specific or certain type of bacteria
Narrow spectrum
200
Which type of radiation uses x-rays to sterilize equipment and food?
Ionizing Radiation
300
Part of bacteria growth phase labeled "A"
Lag phase
300
Why is Nitrogen needed for microbe growth?
Component of amino acids (building blocks of proteins)
300
What is an autoclave and what does it sterilize?
Machine using pressurized steam to sterilize, inanimate objects (reusable medical devices)
300
Which therapeutic index is better - 1 or 10?
10
300
A physical control method of drying out bacteria is a process called what?
Desiccation
400
After a single cell completes one round of cell division, how many cells are present?
Two
400
Some bacteria use carbon dioxide for carbon (inorganic) but get energy from other chemicals, what are they called?
Chemoautotrophs
400
Which 2 genera of bacteria cannot be effectively controlled with detergents?
Clostridium and Bacillus
400
Common type of anti-fungal medication
Azoles
400
What microbial form has the highest resistance to physical methods of microbial control?
Bacterial endospores
500
Staphylococcus epidermidi grows at pH 5, in 10% salt, at 37C, with or without oxygen. Which three terms describe it best?
Halophile, mesophile, facultative anaerobe
500
What metabolic category does cyanobacteria fall under
Photoautotrophs
500
Which term means the absence of bacterial infection within a living organism?
Asepsis
500
Beta-Lactam ring is a unique feature that prevents peptidoglycan from cross-linking in gram-positive bacteria. Name the most common antibiotic that uses this technology.
Penicillin
500
Name the 5 targets for microbial drugs
Cell Wall, plasma membrane, protein synthesis, nutrient synthesis (folic acid), nucleic acid synthesis