Quiz 9: Photosynthesis

1. Circle one: Theoretically, a plant would survive indefinitely in a sun-exposed sealed jar because it is: a. capable of carrying out the light reaction. b. capable of both respiration and photosynthesis. c. reducing NADP⁺. d. DCPIP-dependent

b

2. The two factors which determine how far a plant pigment would travel on a chromatogram are ____________________________________ and ____________________________

a. Solubility in the solvent / attraction to the stationary phase

3. The goal of the chromatography part of our lab is to test the light reaction of isolated chloroplasts: True / False

False: to separate photosynthetic pigments

4. The energy source for photosynthesis is ________________

Light

5. Photosynthesis is crucially important to our survival because it provides us, directly or indirectly, with both _____________________ and ____________________

Oxygen and food

6. The most effective wavelengths are the _______________ and __________, while the least effective is the ______________

Red / blue / green

7. Our chromatography exercise is aimed at ____________________ such photosynthetic pigments as chlorophyll a and b

Separating

8. Circle one: Which of the following will produce the most noticeable change in color: D / L / B / C

Test Tube Abbrev	Test Tube	DCPIP present?	Light provided?	Chloroplasts
D	Dark	yes	no	normal
L	Light	yes	yes	normal
B	Boiled	yes	yes	boiled
C	Control	no	yes	normal

L

9. Circle one: If flies are hermetically sealed in two jars, A, and B, and if jar A has broken pieces of glass inside it while jar B has a living plant, then: . Flies in jar A will enjoy longer /equal / shorter / more sustainable life than flies in jar B.

shorter

10. Bonus question: Devise one experiment which will show that photosynthesis can proceed faster with some light colors than with others [use back of page if we need more space]

A few identical beakers containing elodea, and each receiving different color of light. Measure where oxygen concentration is highest.