Brandon Jones
10/21/21
Multiple choice questions
1.During which phase do bacteria see the most growth?
A. Lag phase (stage were bacteria get acclimated to their environment see little to no growth)
B. Stationary phase (phase were population reaches max population and cell growths and death are
equal)
C. Log phase (phase were bacteria are fully acclimated and take advantage of their resources to
exponentially grow)
D. Death phase (nutrients are used up and cells die)
2 Which organism is best suited for artic areas?
A Mesophiles(grow best at moderate temperatures 14-45 C)
B. Psychrophiles( grow best in cold weather from 0-15 C
C. Thermophiles (grow best in hot temperatures from 45-80 C)
D. hyperThermophiles( grow best in temperatrues from 65- 105C)
3. How does High temperature affect a cell?
A. Causes molecules within the cell to move faster.( molecules move faster at higher temperatures)
B. Causes molecules within a cell to move slower.( molecules move slower in the cold
C. Doesn’t affect the cell
D Causes denaturation of proteins( side effect of high temperatures on a cell)
4. Which of these helps cells with stabilization at high temperatures?
A. Helper proteins(protect from denaturation)
B. Chaperon proteins( help with folding and unfolding proteins)
C Topoisomerase( keeps the double helix supercoiled)
D. Active proton pump( only helps with lower pH stabilization)
5. In what conditions does a Neutrophile live in?
a. Acidic
b. Neutral (pH of 7)
c. Basic
d. none of these
6. Which of these features helps a cell maintain an internal pH?
a. Proton pumps( helps move H ions in and out of membrane which helps keep inner membrane within
a stable pH)
b. Mechanosensitive proteins( only help with solutes moving in and out of the cell)
C. Aqua Porins(help with water moving in and out of cell)
d. Chaperon proteins( only help with high temperatures)
7 In what environment does a Aerotolerant microbe best grown in?
a.
b.
c.
d.
Oxygenated environment
unoxygenated environment
neither
Grows best in both
8. What metabolic process does a aerobic microbe use when there is no oxygen available.
A. Aerobic respiration
b. Fermentation( only metabolic pathway a aerobic microbe can use when oxygen is unavailable.
C. Anaerobic respiration
D. Photosynthesis
9 Which of these are abiotic factors?
A Oxygen( non living)
B Plants
C Ph( non living)
D Bacteria
10. What is a heterotroph
A. Organism that makes its own food(Autotroph)
b. Organism that breaks down chemical compounds(chemotroph)
C. AN organism that uses light to produce its food(phototroph)
D. An organism that eats plants and animals
11. What metabolic process do photoautotroph use to make their food?
a. Photosynthesis( main process for food production)
b. Fermentation (used by aerobes when no oxygen is available)
C Anaerobic respiration( pathway is not available to photoautotrophs)
D. none
12. What are the reactants used in photosynthesis
A. Glucose( product)
B Carbon( one of three reactants)
C Water( product)
D Oxygen(product)
13 What form of cellular respiration do chemoautotrophs use ?
a.
b.
c.
d.
Aerobic respiration( use oxygen as a reactant)
Anaerobic respiration
Photosynthesis
None.
14. Where does glycolysis occur
A. Cell membrane
B. Nucleus
C. Mitochondria
D. Cytosol
15 Which of the following is a product of aerobic respiration?
A.
B.
C.
D.
Co2
Oxygen
Water
Glucose
16. How many atp can be made by oxidative phosphorylation?
a.2
b. 4
c16
b 32