lab 10 review

carbon dioxide and water combine to make carbonic acid. If phenol red was added to the yeast and fruit juice flask after a few days, what color would you expect the solution to turn? Why?

- yellow/ solution is acidic
- pink/ solution is acidic
- yellow/ solution stays basic
- pink/ solution stays basic

yellow/ solution stays basic

is aerobic cellular respiration is occurring, you expect oxygen levels to...

- increase
- decrease
- stay the same

decrease

If cool beans showed less oxygen use than room temperature beans, what most likely accounted for the difference in the experiment performed?

- metabolism was slower at the cooler temperature in plants
- metabolism was faster at the cooler temperature in plants
- more cool beans made up the sample in the test chamber

metabolism was slower at the cool temperature in plants

during fermentation, when is ATP made?

- glycolysis
- electron transport chain
- pyruvate oxidation
- citric acid cycle

glycolysis

After holding your breath for 30 seconds, you exhale into a test tube containing the pH indicator phenol red. After doing this, phenol red should turn yellow.

true or false

true

which gas tested represents a reactant in the process of cellular respiration?

- CO2
- O2
- N2, nitrogen

O2

when a human exhales into phenol red, what type of cellular metabolism predominantly occurred in the person exhaling?

- fermentation
- aerobic cell respiration
- anabolism

aerobic cell respiration

when exhaling into phenol red solution, what causes the change in color and pH?

- carbon dioxide
- water
- oxygen

carbon dioxide

phenol red at the start was pink and ____. After CO2 was added, the color was ____ and ____.

- basic/ pink/ acidic
- acidic/ pink/ basic
- basic/ yellow/ acidic
- acidic/ yellow/ acidic

basic/ yellow/ acidic

if aerobic cellular respiration is occuring, you expect CO2 levels to

- stay the same
- decrease
- increase

increase

which of the following is NOT a product of cell respiration?

- water
- energy
- carbon dioxide
- glucose

glucose

when yeast is added to the fruit juice, what products are produced after a time?

- glucose
- alcohol
- CO2 and alcohol
- CO2

CO2 and alcohol

which gas tested represents a product in the process of cellular respiration?

- O2
- N2 nitrogen
- CO2

CO2

respiration as we observed in this lab was

- catabolic
- endergonic
- anaerobic
- anabolic

catabolic

the warmer temperature of the germinated peas, resulted in a faster rate of cellular expiration

true or false

true