Exam 7: Photosynthesis: Using Light to Make Food

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

The shorter the wavelength of visible light,the ______.

Please refer to the following art to answer the following question(s). -The first step of the Calvin cycle is the incorporation of ______ into ______.

Within the inner membrane of a chloroplast,interconnected sacs of membrane called ______ are suspended in a thick fluid called the ______.

What name is given to a discrete packet of light?

What is the function of stomata?

Which of the following equations best summarizes photosynthesis?

Which of the following is an autotroph?

Please refer to the following art to answer the following question(s). -The last stage of one complete turn of the Calvin cycle involves ______.

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

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

Refer to the accompanying figure.Plant cells that contain the organelle responsible for photosynthesis are concentrated in cells of the ______.

Please use the following information to answer the following question(s). 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: 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 question(s): -Which wavelength of light is the least useful to your plant's growth?

When a molecule absorbs a photon,one of its electrons is raised to the ______ state.

If a plant appears blue to us,what wavelength of light is being reflected?

Please use the following information to answer the following question(s). 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: 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 question(s): -Why do some plant species require shaded conditions while other plant species require bright sunlight?

Through what structure(s)do plants obtain most of their water?

If you provided your shade-tolerant plants with their preferred wavelength of light,but only minimal amounts of water,which of the following would you expect to occur?

The energy of wavelengths that appear ______ is least useful to photosynthesis.

The Calvin cycle makes direct use of ______ to make ______.