Exam 7: Photosynthesis: Using Light to Make Food

What is responsible for the yellow-orange coloration of leaves in the fall?

Which of these is NOT considered an advantage of biofuels from food crops?

Please use the following information to answer the following questions. You work for a company selling tropical rain forest plants commonly found in the understory of the forest.These plants are shade tolerant and can be grown indoors because they require low light.Your employer wants you to find out what is the best type of light to maximize growth of these understory plants.Using a full spectrum of natural light would cause these plants to die because they are a shade-tolerant plant species. From your biology class,you recall that the light-dependent reactions of photosynthesis involve pigment molecules that absorb light of specific wavelengths.You also remember the experiments done by the German biologist Theodor Engelmann,in which he separated light using a prism into different wavelengths and then determined which wavelengths were best for promoting photosynthesis in the algae species he was examining.Your goal is to determine which wavelengths (colors)of light are best for promoting photosynthesis to enhance growth in your species of plant.To achieve this,you grew your plants under different wavelengths of light and measured their growth rates.The wavelengths were measured in nanometers (nm),and the growth rate was measured in millimeters per day (mm/day).The data you collected are as follows: Wavelengths Growth 400 0.33/ day 450 0.46/ day 500 0.88/ day 550 0.12/ day 600 0.54/ day 650 0.28/ day 700 0.08/ day 750 0.00/ day Make a bar graph plotting growth rates on the y-axis and wavelengths of light on the x-axis.Referring to your graph,answer the following questions: -Of the following,which wavelength is LEAST useful to your plants?

Please refer to the following art to answer the following questions. -If an herbicide blocked the Calvin cycle before the generation of glyceraldehyde 3-phosphate (G3P),which of the following statements would be TRUE?

Which of the following is produced during the light reactions of photosynthesis?

CAM plants conserve water by ________.

C₄ plants conserve water by ________.

Please refer to the following art to answer the following questions. -The last stage of one complete turn of the Calvin cycle involves ________.

What is the function of stomata?

Please use the following information to answer the following questions. You work for a company selling tropical rain forest plants commonly found in the understory of the forest.These plants are shade tolerant and can be grown indoors because they require low light.Your employer wants you to find out what is the best type of light to maximize growth of these understory plants.Using a full spectrum of natural light would cause these plants to die because they are a shade-tolerant plant species. From your biology class,you recall that the light-dependent reactions of photosynthesis involve pigment molecules that absorb light of specific wavelengths.You also remember the experiments done by the German biologist Theodor Engelmann,in which he separated light using a prism into different wavelengths and then determined which wavelengths were best for promoting photosynthesis in the algae species he was examining.Your goal is to determine which wavelengths (colors)of light are best for promoting photosynthesis to enhance growth in your species of plant.To achieve this,you grew your plants under different wavelengths of light and measured their growth rates.The wavelengths were measured in nanometers (nm),and the growth rate was measured in millimeters per day (mm/day).The data you collected are as follows: Wavelengths Growth 400 0.33/ day 450 0.46/ day 500 0.88/ day 550 0.12/ day 600 0.54/ day 650 0.28/ day 700 0.08/ day 750 0.00/ day Make a bar graph plotting growth rates on the y-axis and wavelengths of light on the x-axis.Referring to your graph,answer the following questions: -Which wavelength is best for your plants' growth?

Please use the following information to answer the following questions. You work for a company selling tropical rain forest plants commonly found in the understory of the forest.These plants are shade tolerant and can be grown indoors because they require low light.Your employer wants you to find out what is the best type of light to maximize growth of these understory plants.Using a full spectrum of natural light would cause these plants to die because they are a shade-tolerant plant species. From your biology class,you recall that the light-dependent reactions of photosynthesis involve pigment molecules that absorb light of specific wavelengths.You also remember the experiments done by the German biologist Theodor Engelmann,in which he separated light using a prism into different wavelengths and then determined which wavelengths were best for promoting photosynthesis in the algae species he was examining.Your goal is to determine which wavelengths (colors)of light are best for promoting photosynthesis to enhance growth in your species of plant.To achieve this,you grew your plants under different wavelengths of light and measured their growth rates.The wavelengths were measured in nanometers (nm),and the growth rate was measured in millimeters per day (mm/day).The data you collected are as follows: Wavelengths Growth 400 0.33/ day 450 0.46/ day 500 0.88/ day 550 0.12/ day 600 0.54/ day 650 0.28/ day 700 0.08/ day 750 0.00/ day Make a bar graph plotting growth rates on the y-axis and wavelengths of light on the x-axis.Referring to your graph,answer the following questions: -Which wavelength of light is the LEAST useful to your plant's growth?

What compound is found at the reaction center of a photosystem?

Which of the following is the source of electrons for the light reactions?