The ATP/ADP cycle provides energy for cellular activity.

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Photosynthesis, respiration and ATP/ADP are related.

Photosynthesis stores energy, respiration releases it, and ATP is the central molecule in this process.

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Do plants do cellular respiration in the dark?4.

This lab fits in great because it shows that plants not only do photosynthesis, but cellular respiration as well.
~ Ecology unit: During my ecology unit, we cover the 3 major biogeochemical cycles (water, carbon, and nitrogen).

Along with these organelles you will be discussing photosynthesis and cellular respiration.

Chloroplasts contain a green substance called chlorophyll.
Photosynthesis Chemical Equation
Cellular Respiration
What is Cellular Respiration?

Cellular Respiration, process in which cells produce the energy they need to survive.

Chemical equation of cellular respirationHow are they interconnected?

The sugar glucose is important because it is necessary for cellular respiration.

If we look a bit more carefully, however, we will see that plant photosynthesis and respiration are actually not entirely separated by the daily light/dark cycle—during the daytime they coexist. Remember, photosynthesis only takes place where there is chlorophyll, i.e. in the green cells of the leaves or needles. What about the rest of the plant—the stems, the roots, all the living cells that do not contain chlorophyll? They get sugar from the chlorophyll-containing cells. In fact, even the cells that photosynthesize also respire! You might say that the plant feeds itself the food that it itself has made, so that every one of its living cells can generate metabolic energy day and night without interruption.

Now, another perspective. I originally wrote this post in the Pacific Northwest, a region noted for trees that are green all year round. Many trees, however, are not evergreen; they are deciduous. As you can see in this photograph from my winter home in Minnesota, they drop their leaves during the winter and go for several months at a stretch without any possibility of photosynthesis. How do deciduous trees and bushes get the energy they need to maintain life during the winter? Just as they do on a summer’s night. When their leaves are gone, deciduous trees rely on cellular respiration, disassembling the reserves of sugar (mainly in the form of starch stored in the roots) that they accumulated during the bright days of the year. They use this stored energy to drive all the diverse processes of life. A bear stores fat for the winter, a plant stores starch. And, as we will see in another post, in really cold weather both of them can reduce their demands for metabolic energy, and thus for food, dramatically.

Step 6The first step in cellular respiration is glycolysis.

The process is know as the light-dependent reaction.Step 5The next process is cellular respiration.

While its trees have their leaves, a deciduous forest, like an evergreen forest, reverses its breath on a daily cycle. During the day, while photosynthesis works faster than does cellular respiration, a deciduous forest primarily breathes in carbon dioxide and exhales oxygen. During the night, when photosynthesis stops but cellular respiration continues unabated (not only in green plants but also in the myriad other organisms that compose the forest ecosystem), the forest breathes in oxygen and exhales carbon dioxide. Once the leaves are gone, however, it only breathes in oxygen. At that point, it no longer matters whether it’s day or night—the trees respire without photosynthesizing. They always take in oxygen and release carbon dioxide, just like you and I do.

However, I frequently get questions about the lab so I'm hoping this blog post will be useful to those teachers out there who about to set up this lab.

In this lab, students will be testing whether or not aquatic plants do photosynthesis in the dark or light, and also testing if they do cellular respiration during the dark or light.

Cellular respiration breaks down the glucose that is produced in photosynthesis to make more ATP.
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  • Cycle of Photosynthesis and Respiration - VTAide

    So, photosynthesis and respiration—operating in a cycle driven by solar energy—are mirror images of each other:

  • Photosynthesis and Cellular Respiration Summary | …

    During photosynthesis a plant consumes water, carbon dioxide, and light energy, and produces glucose and oxygen.

  • Photosynthesis & Cellular Respiration - Biology Junction

    They will see that the elodea did photosynthesis in the light, and cellular respiration in the dark.** (see note below)

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carbon cycle lab- Photosynthesis and respiration - …


(30) Ritter Dishes (clay planters/potting dishes)
(30) pieces of construction paper (strips preferably)
(5) bags of potting soil
(5) containers of glue
(5) packages of thin tipped markers
(5) packages of thick tipped markers
(10) packages of sponges (green, brown, and light green)
(10) tennis balls

Strategy:

Photosynthesis consists of the absorption of light by chlorophyll pigments
and conversion of this light to chemical energy.

BIO NOTES 2 - Photosynthesis + Cellular Respiration + …

In the post , we were introduced to photosynthesis, the great process that captures energy radiated by the Sun and uses it to make sugars here on Earth. These sugars sustain the life of most our planet’s organisms. A byproduct of photosynthesis is oxygen, O2, the molecule on which so many forms of life depend. The Earth’s atmosphere has an abundant supply of oxygen only thanks to the photosynthesis carried out by the plants of the land and the plankton of the sea.

Respiration and Photosynthesis Cycle - EssaysLink by …

We considered as well the process of cellular respiration. In respiration, sugar molecules are disassembled, and the energy that was stored in them when they were synthesized is now used to carry out many life processes, including the contraction of muscles; the various electrical activities of nerve cells; and the construction of the complex molecules of which living cells are composed, such as proteins, fats, complex carbohydrates, and DNA. In these processes oxygen is used and carbon dioxide is released, only to be reused in photosynthesis.

Photosynthesis and Cell Respiration - Andrewsscienceroom

With no photosynthesis, not only is no oxygen being released, but also no sugar is being made and no new stores of transformed solar energy are being generated. Nonetheless, the trees, bushes, and the delicate greenery of the understory all require an uninterrupted supply of metabolic energy to sustain their lives. Where does this energy come from? From the sugar these same plants made during the daytime and stored within their cells, either as the original sugar or as starch, a more compact form of energy storage. To access this stored energy, the plants use oxygen and release carbon dioxide. In short, they carry out cellular respiration pretty much like animals do. The entire cycle of photosynthesis and respiration takes place within the body of each green plant. The plant breathes in carbon dioxide and exhales oxygen during the day, and then does the opposite—breathes in oxygen and exhales carbon dioxide—during the night.

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