If a plant is removed from its natural environment and exposed to 100 percent CO2 composed of the radioisotope 14C, which of the following will not occur? Select one: a. The rate of photorespiration will remain unchanged. b. The sugars synthesized by the plant will be radioactive. c. The oxygen released will also be radioactive. d. All the carbon molecules in the RuBP molecules will eventually become 14C. e. Rubisco will eventually contain 14C.

At the end of the calvin cycle, this molecule is regenergated: Select one: a. a five carbon molecule, ribulose bis-phosphate b. a six carbon molecule, glucose c. a polymer, cellulose d. a three carbon molecule, glyceraldehyde-3-phosphate e. a four carbon molecule, malate

1. Given the information in the provided graphs, which of the two plants (A and B) is a C3 plant and which is a C4 plant. 2. justify the choices you made by explaining how the light response curves and results of the contrasting temperature treatments are consistent with knowledge about each CO2 fixation pathways

Match the -troph term with the correct definition. (match each letter to the corresponding number)  Each term applies to only 1 definition.  A.chemotroph B. phototroph C. heterotroph D.heliotroph E. autotroph  -------------------------------- 1.gets energy from chemical bonds 2.gets carbon from inorganic sources (carbon dioxide) 3.gets carbon from organic sources (other organisms) 4.gets energy from light

1) If we put a photosynthetic organism in a closed, sealed environment and shine a light on it, we observe that the CO2 and O2 levels in the container reach constant levels. a) Explain why this would occur. b) What factor/value would you expect to be the primary determinant of this value?

DCPIP (2,6-dichlorophenol-indophenol), a blue dye, can act as an electron acceptor and becomes colorless when reduced. A suspension of chloroplasts is prepared, and DCPIP is added to the suspension. The sample is split into two test tubes. One test tube is exposed to light and the other is wrapped in foil (dark control). What would you observe over time comparing the light exposed and the dark control test tubes?   A. The sample exposed to light stays blue. The sample kept in the dark turns colorless.   B. The sample exposed to light turns colorless. The sample wrapped in foil stays blue.   C. Both samples stay blue.   D. Both samples turn colorless.

Match the step or structure in which each happens during Photosynthesis: A. Step where the water is split ?    Goup choose : Light Dependant   -  Chlorphyll  -  Chloroplast  - Precursor to Glucose  -Calvin Cycle - Oxygen   B. Result of splitting water that doesn’t move to next step? Goup choose : Light Dependant   -  Chlorphyll  -  Chloroplast  - Precursor to Glucose  -Calvin Cycle - Oxygen     C. Organelle where Photosynthesis occurs? Goup choose : Light Dependant   -  Chlorphyll  -  Chloroplast  - Precursor to Glucose  -Calvin Cycle - Oxygen   D. Site of sunlight absorption that excites electrons ? Goup choose : Light Dependant   -  Chlorphyll  -  Chloroplast  - Precursor to Glucose  -Calvin Cycle - Oxygen   E. Step where Carbon Dioxide is pulled together ?   Goup choose : Light Dependant   -  Chlorphyll  -  Chloroplast  - Precursor to Glucose  -Calvin Cycle - Oxygen                 F. Product of Carbon Dioxide being pulled together? Goup choose : Light…

For photosynthesis lab in biology 1) This lab uses spinach leaves. Name another plant that would make an interesting comparison to spinach. Explain why you think this leaf would provide an interesting comparison 2) The lights used in this experiment are 60W. What would you predict the effect of having stronger or weaker wattage bulbs would be on your results? Explain. 3)This lab uses 0.2% sodium bicarbonate. What would you predict the effect of raising or lowering the percentage would be on your results? Explain. 4)What are TWO other things that might be manipulated in an experiment using this same protocol other than the type of leaf, percent sodium bicarbonate, and wattage of light bulb? 5) What key thing do you have to look for on the graph to know for certain that your treatment has caused a significant effect?

In a photosynthetic plant cell, chlorophyll is located: a. in the stroma b. in the outer membrane of the chloroplast envelope c. in the intervascular space of the chloroplast d. in the inner membrane of the chloroplast envelope e. in the thylakoids

Suppose that you are measuring CO2 exchange by a leaf. During the time period of your measurement, 1.10E+7 molecules of glyeraldehyde phosphate (PGAL) are made from CO2 in photosynthesis and 4.00E+6 molecules of glucose are used in cellular respiration. How many net molecules of CO2 would you detect being taken up by the leaf in your measurement?