Save
Busy. Please wait.
Log in with Clever
or
show password
Forgot Password?
Don't have an account?  Sign up 
Sign up using Clever
or
Username is available taken
show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account. Your email address is only used to allow you to reset your password. See our Privacy Policy and Terms of Service.

Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
focusNode
Didn't know it?
click below
 
Knew it?
click below
Don't Know
Remaining cards (0)
Know
0:00
edit
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

Stack #160523

Microbiology Test #2 Review Dr. Bharathi

QuestionAnswer
What is an organism that produces superoxide dimutase and catalase? Aerobe
What is not a disadvantage for a direct microscope count? Sample volume of an unknown.
What are the disadvantages of direct microscope count? Motile bacteria are difficult to count, dead cells are likly to be counted, high concentrations of cells are requred to be countable.
What is the advantage of direct microscope count? No incubation time is required.
What do hydrothermal vents on the ocean floor useas a carbon source? CO2
What is in nutrient agar? peptone & beef extract
What do producers in the vents use? sulfides
What is the direct method to count microbial growth? metabolic activity
What is the best pH for most bacteria? 7
What is the best temperature for optimum growth of mesophiles? 25
What is the best temperature for optimum growth of psychrophiles? 15
What is the best temperature for optimum growth of psychotrophs? 20-30
What catalyzes 2H202---into 2H2O + O2? Catalase
What is an organic growth factor? NAD+
What is not used to determine the metabolic growth factor? Turbidity
What is an organism that uses oxygen or grows without oxygen? facultative anaerobe
What is not a disadvantage to determine viable cells? viable plate count
How do salts and sugars preserve food? creates a hypertonic environment
What makes H202 + 2H+ ----into 2H20? peroxidase enzyme
What is a common intermediate between catabolic and anabolic pathways? ATP
When are gram positive bacteria most susceptible to penicillin? Log phase
What organisms are capable of respiration? anaerobic
What is generated by the flow of protons across the cell membrane? ATP
What neutralizes acids in the medium? buffers
What measures microbial growth? metaboic activity & glocose consumption
Inwhat mediums do gram positive organisms grow such as staphylococcus aureus colonies? selective & differential
How do gram positive organisms grown in selective & differential mediums look? yellow halo surrounds
What is a step in glycolysis? oxidation
What do aeobic and anaerobic respiration have in common? final receptor of electrons are different in both
What is the oxidation of glucose with organic molecules serving as electron receptors? fermintation
What is not necessary for respiration? oxygen
What is an example of cyanobacteria? photoautotroph
What uses CO2 for carbon and H2 for energy? chemoautotroph
What is involved in aerobic respiration and oxidized in the Krebs Cycle? pyruvic acid
What happens to a bacterial culture grown in glucose? peptide medium causes the pH to increase most likely using peptides
What does phosphoeno pyruvatie into pyruvic acid generate? ATP
What is happening when ATP general when protons are moved across a membrane? chemiosmotic mechanism
What does photophosphrylation require? CO2
What is not an enzyme? Coenzyme A
What is not an end product of fermentation? Pyruvic acid
What has bacteria chlorophylls and uses alcohols for carbon? photoheterotrophs
Fermentation is defined as what? Metabolic process
Fermentatin releases what? energy from sugar
Fermentation does not require what? oxygen
How does fermentation occur? anaerobically
What is the oxidation of intrmediate metabolic compounds? substrate level phosphorylation
What is metabolized in the Krebs Cycle or citric acid cycle? fattyacids
What is the energy released as carrier molecules and are oxidized and used to generte ATP? oxidative phoshorylation
What does not produce 3 ATPs? pentose hophate pathway
What uses glycose for carbon and energy? chemoheterotroph
How does a strictly fermentative bacteria produce energy? glycolyis only
What is not an energy source for a photautotroph? CO2
Created by: twoboys9194
Popular Biology sets

 

 



Voices

Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!
"Know" box contains:
Time elapsed:
Retries:
restart all cards