Test 2 Flashcards
What does the enzyme-substrate complex do?
It forces the substrate into an uncomfortable position and pulls apart its bond.
What turns the turnip extract brown?
Catechol oxidase, which reacts with catechol to make brown benzoquinone. This happens with bruised fruit in everyday life.
What does catalase do? Does higher pH mean more catalase activity?
It speeds up the breakdown of hydrogen peroxide into H2O and O2. Yes!
Drop and give me: Anaerobic fermentation equation for plants
Ethanol fermentation (inebriated plants). C6H12O6 = 2 C2H5OH + 2 CO2 + ATP/Heat. Produces Ethanol
Drop and give me: Aerobic respiration equation
C6H12O6 + 6 O2 = 6 CO2 + 6 H2O + ATP/Heat
Drop and give me: Anaerobic fermentation equation for animals
C6H12O6 = 2 CH3 CH OH COOH + ATP/Heat. Produces Lactic Acid
How much ATP does the etc produce compared to glycolysis?
About 18 times as much - 30 or 32 compared to 2
What does NaF do to respiration? Glucose?
Inhibits glycolysis; activates glycolysis since it’s the starting molecule
What does Na Pyruvate do to respiration?
Na pyruvate lets the cell carry out fermentation, even if NaF is blocking glycolysis.
What does MgSO4 do to respiration?
MgSO4 is an activator.
How were the snails and plants’ volumes measured? How was their respiration measured?
Water displacement. By adding phenolphthalein indicator and then NaOH until it turned pink. The NaOH needed is related to the amount of CO2 produced by an equation.
Drop and give me the photosynthesis equation.
6 CO2 + 12 H2O + light energy = C6H12O6 + 6 H2O + 6 O2
The photochemical reactions ___ require light energy and produce ____ from _____.
do; oxygen, protons, and electrons; water
The biochemical reactions ___ require light energy and produce ____ from _____.
do not; sugar; CO2
A substance that absorbs light is a _____.
Pigment.
Paper chromatography is a way to ______.
separate pigments from plant extract.
In the plant extract, photosynthesis stops. Therefore, the electrons in it have nothing productive to do. What do they do instead?
They fluoresce.
What are some major examples of pigments? What are some accessory pigments in photosynthesis?
Chlorophyll a and chlorophyll b. Carotene and xanophyll.
What about a pigment makes it travel more quickly or more slowly up the paper in paper chromatography?
solubility, polarity, and molecular size.
What is the formula for Rf? A high Rf number indicates _____ solubility.
(Distance moved by pigment) / (Distance from pigment’s origin to solvent’s front). high.
Phenol red, or _____ ___________, turns _____ in an ______ solution and red in a ______ solution.
phenol, sulfonphthalein, yellow, acidic, basic
If you add ____ to water using your breath, it will dissolve into ___________ and become more ____.
CO2, carbonic acid, acidic.
Does the O2 in photosynthesis come from the CO2 or the H2O?
The H2O.
Which reaction uses ATP and NADH, biochemical or photochemical reactions?
Biochemical ones.
Carbonic acid is involved in two reversible reactions: one with H2O and ____, and another with _____ and H+.
CO2, HCO3-
What color of light did the chlorophyll fluoresce?
Red
What does your breath contain that forms carbon acid?
CO2
