Exam 7: Photosynthesis: Using Light to Make Food

Photosynthesis contributes to plant growth by ________.

In photosynthesis,an H⁺ ion gradient forms across the ________.

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

Where are photosystems located?

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

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

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

CAM plants conserve water by ________.

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: 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: -Shade-tolerant plants have many adaptations for living in areas of low light.Predict whether each of the following processes would be high or low in comparison with other plants and choose the answer that is most CORRECT. Density of stomata on leaves Leaf size Carbohydrate storage

Please refer to the following art to answer the following questions. -The Calvin cycle is sometimes called the "dark reactions." Could it take place if a plant were grown in the dark continuously?

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: 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?

-The light reactions are generally presented in zig-zag patterns,as shown in the accompanying figure.What is the significance of the primary electron receptor shown at position 2 being slightly higher than the primary electron receptor shown at position 3?

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: 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 refer to the following art to answer the following questions. -Which of the following BEST describes the direct mechanism of ATP production during photosynthesis?

Art Questions -In the accompanying figure,the molecule that makes up the bulk of the mass of the plant comes in mostly ________.

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

What is the function of stomata?

Please refer to the following art to answer the following questions. -If the interior of the thylakoid were not a sealed compartment ________.

________ is the source of the oxygen gas released by a photosystem.

The color that we see when looking at a pigmented object is ________.