Test 2

Question 1

What does the enzyme-substrate complex do?

Answer 1

It forces the substrate into an uncomfortable position and pulls apart its bond.

Question 2

What turns the turnip extract brown?

Answer 2

Catechol oxidase, which reacts with catechol to make brown benzoquinone. This happens with bruised fruit in everyday life.

Question 3

What does catalase do? Does higher pH mean more catalase activity?

Answer 3

It speeds up the breakdown of hydrogen peroxide into H2O and O2. Yes!

Question 4

Drop and give me: Anaerobic fermentation equation for plants

Answer 4

Ethanol fermentation (inebriated plants). C6H12O6 = 2 C2H5OH + 2 CO2 + ATP/Heat. Produces Ethanol

Question 5

Drop and give me: Aerobic respiration equation

Answer 5

C6H12O6 + 6 O2 = 6 CO2 + 6 H2O + ATP/Heat

Question 6

Drop and give me: Anaerobic fermentation equation for animals

Answer 6

C6H12O6 = 2 CH3 CH OH COOH + ATP/Heat. Produces Lactic Acid

Question 7

How much ATP does the etc produce compared to glycolysis?

Answer 7

About 18 times as much - 30 or 32 compared to 2

Question 8

What does NaF do to respiration? Glucose?

Answer 8

Inhibits glycolysis; activates glycolysis since it’s the starting molecule

Question 9

What does Na Pyruvate do to respiration?

Answer 9

Na pyruvate lets the cell carry out fermentation, even if NaF is blocking glycolysis.

Question 10

What does MgSO4 do to respiration?

Answer 10

MgSO4 is an activator.

Question 11

How were the snails and plants’ volumes measured? How was their respiration measured?

Answer 11

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.

Question 12

Drop and give me the photosynthesis equation.

Answer 12

6 CO2 + 12 H2O + light energy = C6H12O6 + 6 H2O + 6 O2

Question 13

The photochemical reactions ___ require light energy and produce ____ from _____.

Answer 13

do; oxygen, protons, and electrons; water

Question 14

The biochemical reactions ___ require light energy and produce ____ from _____.

Answer 14

do not; sugar; CO2

Question 15

A substance that absorbs light is a _____.

Answer 15

Pigment.

Question 16

Paper chromatography is a way to ______.

Answer 16

separate pigments from plant extract.

Question 17

In the plant extract, photosynthesis stops. Therefore, the electrons in it have nothing productive to do. What do they do instead?

Answer 17

They fluoresce.

Question 18

What are some major examples of pigments? What are some accessory pigments in photosynthesis?

Answer 18

Chlorophyll a and chlorophyll b. Carotene and xanophyll.

Question 19

What about a pigment makes it travel more quickly or more slowly up the paper in paper chromatography?

Answer 19

solubility, polarity, and molecular size.

Question 20

What is the formula for Rf? A high Rf number indicates _____ solubility.

Answer 20

(Distance moved by pigment) / (Distance from pigment’s origin to solvent’s front). high.

Question 21

Phenol red, or _____ ___________, turns _____ in an ______ solution and red in a ______ solution.

Answer 21

phenol, sulfonphthalein, yellow, acidic, basic

Question 22

If you add ____ to water using your breath, it will dissolve into ___________ and become more ____.

Answer 22

CO2, carbonic acid, acidic.

Question 23

Does the O2 in photosynthesis come from the CO2 or the H2O?

Answer 23

The H2O.

Question 24

Which reaction uses ATP and NADH, biochemical or photochemical reactions?

Answer 24

Biochemical ones.

Question 25

Carbonic acid is involved in two reversible reactions: one with H2O and ____, and another with _____ and H+.

Answer 25

CO2, HCO3-

Question 26

What color of light did the chlorophyll fluoresce?

Answer 26

Red

Question 27

What does your breath contain that forms carbon acid?

Answer 27

CO2